precommit

Signed-off-by: Tyler Michael Smith <tlrmchlsmth@gmail.com>

.buildkite/check-wheel-size.py

@@ -5,11 +5,11 @@ import os
 import sys
 import zipfile
 
-# Read the VLLM_MAX_SIZE_MB environment variable, defaulting to 450 MiB
+# Read the VLLM_MAX_SIZE_MB environment variable, defaulting to 500 MiB
 # Note that we have 800 MiB quota, please use it wisely.
 # See https://github.com/pypi/support/issues/6326 .
 # Please also sync the value with the one in Dockerfile.
-VLLM_MAX_SIZE_MB = int(os.environ.get("VLLM_MAX_SIZE_MB", 450))
+VLLM_MAX_SIZE_MB = int(os.environ.get("VLLM_MAX_SIZE_MB", 500))
 
 
 def print_top_10_largest_files(zip_file):

.buildkite/lm-eval-harness/configs/Meta-Llama-3-8B-QQQ.yaml

@@ -0,0 +1,12 @@
+# For vllm script, with -t option (tensor parallel size).
+# bash .buildkite/lm-eval-harness/run-lm-eval-gsm-vllm-baseline.sh -m HandH1998/QQQ-Llama-3-8b-g128 -b 32 -l 1000 -f 5 -t 1
+model_name: "HandH1998/QQQ-Llama-3-8b-g128"
+tasks:
+- name: "gsm8k"
+  metrics:
+  - name: "exact_match,strict-match"
+    value: 0.419
+  - name: "exact_match,flexible-extract"
+    value: 0.416
+limit: 1000
+num_fewshot: 5

.buildkite/lm-eval-harness/configs/Meta-Llama-4-Maverick-17B-128E-Instruct-FP8-MM.yaml

@@ -0,0 +1,12 @@
+# For hf script, without -t option (tensor parallel size).
+# bash .buildkite/lm-eval-harness/run-lm-eval-chartqa-vllm-vlm-baseline.sh -m meta-llama/Llama-4-Maverick-17B-128E-Instruct-FP8 -l 100 -t 8
+model_name: "meta-llama/Llama-4-Maverick-17B-128E-Instruct-FP8"
+backend: "vllm-vlm"
+tasks:
+- name: "chartqa"
+  metrics:
+  - name: "relaxed_accuracy,none"
+    # TODO(zhewenl): model card is 0.90, but the actual score is 0.80.
+    value: 0.80
+limit: 100
+num_fewshot: 0

.buildkite/lm-eval-harness/configs/Meta-Llama-4-Maverick-17B-128E-Instruct-FP8.yaml

@@ -0,0 +1,10 @@
+# For hf script, without -t option (tensor parallel size).
+# bash .buildkite/lm-eval-harness/run-lm-eval-mmlupro-vllm-baseline.sh -m meta-llama/Llama-4-Maverick-17B-128E-Instruct-FP8 -l 250 -t 8 -f 5
+model_name: "meta-llama/Llama-4-Maverick-17B-128E-Instruct-FP8"
+tasks:
+- name: "mmlu_pro"
+  metrics:
+  - name: "exact_match,custom-extract"
+    value: 0.80
+limit: 250 # will run on 250 * 14 subjects = 3500 samples
+num_fewshot: 5

.buildkite/lm-eval-harness/configs/Qwen2.5-VL-3B-Instruct-FP8-dynamic.yaml

@@ -1,4 +1,5 @@
-# bash .buildkite/lm-eval-harness/run-lm-eval-gsm-vllm-baseline.sh -m RedHatAI/Qwen2.5-VL-3B-Instruct-FP8-Dynamic -b auto -l 1319 -f 5 -t 1
+# For vllm script, with -t option (tensor parallel size)
+# bash .buildkite/lm-eval-harness/run-lm-eval-gsm-vllm-baseline.sh -m RedHatAI/Qwen2.5-VL-3B-Instruct-FP8-Dynamic -l 1319 -t 1
 model_name: "RedHatAI/Qwen2.5-VL-3B-Instruct-FP8-Dynamic"
 tasks:
 - name: "gsm8k"

.buildkite/lm-eval-harness/configs/Qwen2.5-VL-7B-Instruct.yaml

@@ -0,0 +1,12 @@
+# For vllm script, with -t option (tensor parallel size).
+# bash .buildkite/lm-eval-harness/run-lm-eval-chartqa-vllm-vlm-baseline.sh -m Qwen/Qwen2.5-VL-7B-Instruct -l 2500 -t 1
+
+model_name: "Qwen/Qwen2.5-VL-7B-Instruct"
+backend: "vllm-vlm"
+tasks:
+- name: "chartqa"
+  metrics:
+  - name: "relaxed_accuracy,none"
+    value: 0.855
+limit: 2500
+num_fewshot: 0

.buildkite/lm-eval-harness/configs/models-large-h100.txt

@@ -0,0 +1 @@
+Meta-Llama-4-Maverick-17B-128E-Instruct-FP8.yaml

.buildkite/lm-eval-harness/configs/models-mm-large-h100.txt

@@ -0,0 +1 @@
+Meta-Llama-4-Maverick-17B-128E-Instruct-FP8-MM.yaml

.buildkite/lm-eval-harness/configs/models-mm-small.txt

@@ -0,0 +1 @@
+Qwen2.5-VL-7B-Instruct.yaml

.buildkite/lm-eval-harness/run-lm-eval-chartqa-vllm-vlm-baseline.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+# We can use this script to compute baseline accuracy on chartqa for vllm.
+#
+# Make sure you have lm-eval-harness installed:
+#   pip install lm-eval==0.4.9
+
+usage() {
+    echo``
+    echo "Runs lm eval harness on ChartQA using multimodal vllm."
+    echo "This pathway is intended to be used to create baselines for "
+    echo "our correctness tests in vllm's CI."
+    echo
+    echo "usage: ${0} <options>"
+    echo
+    echo "  -m    - huggingface stub or local directory of the model"
+    echo "  -l    - limit number of samples to run"
+    echo "  -t    - tensor parallel size to run at"
+    echo
+}
+
+while getopts "m:l:t:" OPT; do
+  case ${OPT} in
+    m ) 
+        MODEL="$OPTARG"
+        ;;
+    l ) 
+        LIMIT="$OPTARG"
+        ;;
+    t ) 
+        TP_SIZE="$OPTARG"
+        ;;
+    \? ) 
+        usage
+        exit 1
+        ;;
+  esac
+done
+
+lm_eval --model vllm-vlm \
+  --model_args "pretrained=$MODEL,tensor_parallel_size=$TP_SIZE" \
+  --tasks chartqa \
+  --batch_size auto \
+  --apply_chat_template \
+  --limit $LIMIT

.buildkite/lm-eval-harness/run-lm-eval-mmlupro-vllm-baseline.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+# We can use this script to compute baseline accuracy on MMLUPRO for vllm.
+# We use this for fp8, which HF does not support.
+#
+# Make sure you have lm-eval-harness installed:
+#   pip install git+https://github.com/EleutherAI/lm-evaluation-harness.git@206b7722158f58c35b7ffcd53b035fdbdda5126d#egg=lm-eval[api]
+
+usage() {
+    echo``
+    echo "Runs lm eval harness on MMLU Pro using huggingface transformers."
+    echo "This pathway is intended to be used to create baselines for "
+    echo "our automated nm-test-accuracy workflow"
+    echo
+    echo "usage: ${0} <options>"
+    echo
+    echo "  -m    - huggingface stub or local directory of the model"
+    echo "  -l    - limit number of samples to run"
+    echo "  -f    - number of fewshot samples to use"
+    echo "  -t    - tensor parallel size to run at"
+    echo
+}
+
+while getopts "m:b:l:f:t:" OPT; do
+  case ${OPT} in
+    m )
+        MODEL="$OPTARG"
+        ;;
+    b )
+        BATCH_SIZE="$OPTARG"
+        ;;
+    l )
+        LIMIT="$OPTARG"
+        ;;
+    f )
+        FEWSHOT="$OPTARG"
+        ;;
+    t )
+        TP_SIZE="$OPTARG"
+        ;;
+    \? )
+        usage
+        exit 1
+        ;;
+  esac
+done
+
+lm_eval --model vllm \
+  --model_args "pretrained=$MODEL,tensor_parallel_size=$TP_SIZE,add_bos_token=true,trust_remote_code=true,max_model_len=4096" \
+  --tasks mmlu_pro --num_fewshot "$FEWSHOT" --limit "$LIMIT" \
+  --batch_size auto

.buildkite/lm-eval-harness/test_lm_eval_correctness.py

@@ -19,21 +19,27 @@ RTOL = 0.08
 def launch_lm_eval(eval_config, tp_size):
     trust_remote_code = eval_config.get("trust_remote_code", False)
     max_model_len = eval_config.get("max_model_len", 4096)
+    batch_size = eval_config.get("batch_size", "auto")
+    backend = eval_config.get("backend", "vllm")
     model_args = (
         f"pretrained={eval_config['model_name']},"
         f"tensor_parallel_size={tp_size},"
         f"enforce_eager=true,"
         f"add_bos_token=true,"
         f"trust_remote_code={trust_remote_code},"
-        f"max_model_len={max_model_len}"
+        f"max_model_len={max_model_len},"
     )
     results = lm_eval.simple_evaluate(
-        model="vllm",
+        model=backend,
         model_args=model_args,
         tasks=[task["name"] for task in eval_config["tasks"]],
         num_fewshot=eval_config["num_fewshot"],
         limit=eval_config["limit"],
-        batch_size="auto",
+        # TODO(yeq): using chat template w/ fewshot_as_multiturn is supposed help
+        # text models. however, this is regressing measured strict-match for
+        # existing text models in CI, so only apply it for mm.
+        apply_chat_template=backend == "vllm-vlm",
+        batch_size=batch_size,
     )
     return results
 

.buildkite/nightly-benchmarks/scripts/compare-json-results.py

@@ -7,6 +7,7 @@ from importlib import util
 
 import pandas as pd
 
+pd.options.display.float_format = "{:.2f}".format
 plotly_found = util.find_spec("plotly.express") is not None
 
 
@@ -109,7 +110,10 @@ def compare_data_columns(
         if len(compare_frames) >= 2:
             base = compare_frames[0]
             current = compare_frames[-1]
-            ratio = current / base
+            if "P99" in data_column or "Median" in data_column:
+                ratio = base / current  # for latency
+            else:
+                ratio = current / base
             ratio = ratio.mask(base == 0)  # avoid inf when baseline is 0
             ratio.name = f"Ratio 1 vs {len(compare_frames)}"
             frames.append(ratio)
@@ -199,6 +203,71 @@ def split_json_by_tp_pp(
     return saved_paths
 
 
+def _add_limit_line(fig, y_value, label):
+    # Visible dashed line + annotation
+    fig.add_hline(
+        y=y_value,
+        line_dash="dash",
+        line_color="red" if "ttft" in label.lower() else "blue",
+        annotation_text=f"{label}: {y_value} ms",
+        annotation_position="top left",
+    )
+    # Optional: add a legend item (as a transparent helper trace)
+    if plot and plotly_found:
+        import plotly.graph_objects as go
+
+        fig.add_trace(
+            go.Scatter(
+                x=[None],
+                y=[None],
+                mode="lines",
+                line=dict(
+                    dash="dash", color="red" if "ttft" in label.lower() else "blue"
+                ),
+                name=f"{label}",
+            )
+        )
+
+
+def _find_concurrency_col(df: pd.DataFrame) -> str:
+    for c in [
+        "# of max concurrency.",
+        "# of max concurrency",
+        "Max Concurrency",
+        "max_concurrency",
+        "Concurrency",
+    ]:
+        if c in df.columns:
+            return c
+    # Fallback: guess an integer-like column (harmless if unused)
+    for c in df.columns:
+        if df[c].dtype.kind in "iu" and df[c].nunique() > 1 and df[c].min() >= 1:
+            return c
+    return "# of max concurrency."
+
+
+def _highlight_threshold(
+    df: pd.DataFrame, threshold: float
+) -> "pd.io.formats.style.Styler":
+    """Highlight numeric per-configuration columns with value <= threshold."""
+    conc_col = _find_concurrency_col(df)
+    key_cols = [
+        c
+        for c in ["Model", "Dataset Name", "Input Len", "Output Len", conc_col]
+        if c in df.columns
+    ]
+    conf_cols = [
+        c for c in df.columns if c not in key_cols and not str(c).startswith("Ratio")
+    ]
+    conf_cols = [c for c in conf_cols if pd.api.types.is_numeric_dtype(df[c])]
+    return df.style.map(
+        lambda v: "background-color:#e6ffe6;font-weight:bold;"
+        if pd.notna(v) and v <= threshold
+        else "",
+        subset=conf_cols,
+    )
+
+
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
     parser.add_argument(
@@ -220,6 +289,26 @@ if __name__ == "__main__":
         default="# of max concurrency.",
         help="column name to use as X Axis in comparison graph",
     )
+    parser.add_argument(
+        "-l",
+        "--latency",
+        type=str,
+        default="p99",
+        help="take median|p99 for latency like TTFT/TPOT",
+    )
+    parser.add_argument(
+        "--ttft-max-ms",
+        type=float,
+        default=3000.0,
+        help="Reference limit for TTFT plots (ms)",
+    )
+    parser.add_argument(
+        "--tpot-max-ms",
+        type=float,
+        default=100.0,
+        help="Reference limit for TPOT plots (ms)",
+    )
+
     args = parser.parse_args()
 
     drop_column = "P99"
@@ -234,12 +323,22 @@ if __name__ == "__main__":
         "# of max concurrency.",
         "qps",
     ]
-    data_cols_to_compare = ["Output Tput (tok/s)", "Median TTFT (ms)", "Median"]
+
-    html_msgs_for_data_cols = [
+    if "median" in args.latency:
-        "Compare Output Tokens /n",
+        data_cols_to_compare = ["Output Tput (tok/s)", "Median TTFT (ms)", "Median"]
-        "Median TTFT /n",
+        html_msgs_for_data_cols = [
-        "Median TPOT /n",
+            "Compare Output Tokens /n",
-    ]
+            "Median TTFT /n",
+            "Median TPOT /n",
+        ]
+        drop_column = "P99"
+    elif "p99" in args.latency:
+        data_cols_to_compare = ["Output Tput (tok/s)", "P99 TTFT (ms)", "P99"]
+        html_msgs_for_data_cols = [
+            "Compare Output Tokens /n",
+            "P99 TTFT /n",
+            "P99 TPOT /n",
+        ]
 
     if len(args.file) == 1:
         files = split_json_by_tp_pp(args.file[0], output_root="splits")
@@ -275,33 +374,83 @@ if __name__ == "__main__":
                     f"Expected subset: {filtered_info_cols}, "
                     f"but DataFrame has: {list(output_df.columns)}"
                 )
-            output_df_sorted = output_df.sort_values(by=existing_group_cols)
+            # output_df_sorted = output_df.sort_values(by=existing_group_cols)
+            output_df_sorted = output_df.sort_values(by=args.xaxis)
             output_groups = output_df_sorted.groupby(existing_group_cols, dropna=False)
             for name, group in output_groups:
-                html = group.to_html()
+                group_name = (
+                    ",".join(map(str, name)).replace(",", "_").replace("/", "-")
+                )
+                group_html_name = "perf_comparison_" + group_name + ".html"
+
+                metric_name = str(data_cols_to_compare[i]).lower()
+                if "tok/s" in metric_name:
+                    html = group.to_html()
+                elif "ttft" in metric_name:
+                    styler = _highlight_threshold(group, args.ttft_max_ms).format(
+                        {c: "{:.2f}" for c in group.select_dtypes("number").columns},
+                        na_rep="—",
+                    )
+                    html = styler.to_html(
+                        table_attributes='border="1" class="dataframe"'
+                    )
+                elif (
+                    "tpot" in metric_name
+                    or "median" in metric_name
+                    or "p99" in metric_name
+                ):
+                    styler = _highlight_threshold(group, args.tpot_max_ms).format(
+                        {c: "{:.2f}" for c in group.select_dtypes("number").columns},
+                        na_rep="—",
+                    )
+                    html = styler.to_html(
+                        table_attributes='border="1" class="dataframe"'
+                    )
+
                 text_file.write(html_msgs_for_data_cols[i])
                 text_file.write(html)
+                with open(group_html_name, "a+") as sub_text_file:
+                    sub_text_file.write(html_msgs_for_data_cols[i])
+                    sub_text_file.write(html)
 
-                if plot and plotly_found:
+                    if plot and plotly_found:
-                    import plotly.express as px
+                        import plotly.express as px
 
-                    df = group[raw_data_cols]
+                        df = group[raw_data_cols]
-                    df_sorted = df.sort_values(by=info_cols[y_axis_index])
+                        df_sorted = df.sort_values(by=info_cols[y_axis_index])
-                    # Melt DataFrame for plotting
+                        # Melt DataFrame for plotting
-                    df_melted = df_sorted.melt(
+                        df_melted = df_sorted.melt(
-                        id_vars=info_cols[y_axis_index],
+                            id_vars=info_cols[y_axis_index],
-                        var_name="Configuration",
+                            var_name="Configuration",
-                        value_name=data_cols_to_compare[i],
+                            value_name=data_cols_to_compare[i],
-                    )
+                        )
-                    title = data_cols_to_compare[i] + " vs " + info_cols[y_axis_index]
+                        title = (
-                    # Create Plotly line chart
+                            data_cols_to_compare[i] + " vs " + info_cols[y_axis_index]
-                    fig = px.line(
+                        )
-                        df_melted,
+                        # Create Plotly line chart
-                        x=info_cols[y_axis_index],
+                        fig = px.line(
-                        y=data_cols_to_compare[i],
+                            df_melted,
-                        color="Configuration",
+                            x=info_cols[y_axis_index],
-                        title=title,
+                            y=data_cols_to_compare[i],
-                        markers=True,
+                            color="Configuration",
-                    )
+                            title=title,
-                    # Export to HTML
+                            markers=True,
-                    text_file.write(fig.to_html(full_html=True, include_plotlyjs="cdn"))
+                        )
+
+                        # ---- Add threshold lines based on metric name ----
+                        if "ttft" in metric_name:
+                            _add_limit_line(fig, args.ttft_max_ms, "TTFT limit")
+                        elif (
+                            "tpot" in metric_name
+                            or "median" in metric_name
+                            or "p99" in metric_name
+                        ):
+                            _add_limit_line(fig, args.tpot_max_ms, "TPOT limit")
+
+                        # Export to HTML
+                        text_file.write(
+                            fig.to_html(full_html=True, include_plotlyjs="cdn")
+                        )
+                        sub_text_file.write(
+                            fig.to_html(full_html=True, include_plotlyjs="cdn")
+                        )

.buildkite/nightly-benchmarks/scripts/convert-results-json-to-markdown.py

@@ -63,9 +63,11 @@ serving_column_mapping = {
     "mean_ttft_ms": "Mean TTFT (ms)",
     "median_ttft_ms": "Median TTFT (ms)",
     "p99_ttft_ms": "P99 TTFT (ms)",
+    "std_ttft_ms": "STD TTFT (ms)",
     "mean_tpot_ms": "Mean TPOT (ms)",
     "median_tpot_ms": "Median",
     "p99_tpot_ms": "P99",
+    "std_tpot_ms": "STD TPOT (ms)",
     "mean_itl_ms": "Mean ITL (ms)",
     "median_itl_ms": "Median ITL (ms)",
     "p99_itl_ms": "P99 ITL (ms)",
@@ -368,7 +370,7 @@ if __name__ == "__main__":
         # The GPUs sometimes come in format of "GPUTYPE\nGPUTYPE\n...",
         # we want to turn it into "8xGPUTYPE"
         df["GPU"] = df["GPU"].apply(
-            lambda x: f"{len(x.splitlines())}x{x.splitlines()[0]}"
+            lambda x: "{}x{}".format(len(x.split("\n")), x.split("\n")[0])
         )
 
     # get markdown tables

.buildkite/nightly-benchmarks/scripts/run-performance-benchmarks.sh

@@ -454,11 +454,6 @@ main() {
   fi
   check_hf_token
 
-  # Set to v1 to run v1 benchmark
-  if [[ "${ENGINE_VERSION:-v0}" == "v1" ]]; then
-    export VLLM_USE_V1=1
-  fi
-
   # dependencies
   (which wget && which curl) || (apt-get update && apt-get install -y wget curl)
   (which jq) || (apt-get update && apt-get -y install jq)
@@ -476,6 +471,11 @@ main() {
   mkdir -p $RESULTS_FOLDER
   QUICK_BENCHMARK_ROOT=../.buildkite/nightly-benchmarks/
 
+  # dump vllm info via vllm collect-env
+  env_output=$(vllm collect-env)
+
+  echo "$env_output" >"$RESULTS_FOLDER/vllm_env.txt"
+
   # benchmarking
   run_serving_tests $QUICK_BENCHMARK_ROOT/tests/"${SERVING_JSON:-serving-tests$ARCH.json}"
   run_latency_tests $QUICK_BENCHMARK_ROOT/tests/"${LATENCY_JSON:-latency-tests$ARCH.json}"

.buildkite/nightly-benchmarks/tests/latency-tests-cpu.json

@@ -1,28 +1,24 @@
 [
     {
-        "test_name": "latency_llama8B_tp1",
+        "test_name": "latency_llama8B_tp2",
         "environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
 	    "VLLM_CPU_KVCACHE_SPACE": 40
         },
         "parameters": {
             "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 1,
+            "tensor_parallel_size": 2,
-            "load_format": "dummy",
+	    "dtype": "bfloat16",
-            "num_iters_warmup": 5,
+	    "distributed_executor_backend": "mp",
-            "num_iters": 15
+	    "block_size": 128,
-        }
+	    "trust_remote_code": "",
-    },
+            "disable_log_stats": "",
-    {
+	    "enforce_eager": "",
-        "test_name": "latency_llama8B_tp4",
+	    "max_num_batched_tokens": 2048,
-        "environment_variables": {
+	    "max_num_seqs": 256,
-	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
-	    "VLLM_CPU_KVCACHE_SPACE": 40
-        },
-        "parameters": {
-            "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 4,
-            "load_format": "dummy",
             "num_iters_warmup": 5,
             "num_iters": 15
         }

.buildkite/nightly-benchmarks/tests/serving-tests-cpu-snc3.json

@@ -95,6 +95,38 @@
             "num_prompts": 200
         }
     },
+    {
+        "test_name": "serving_llama8B_bf16_tp4_sharegpt",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "sharegpt",
+            "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
+            "num_prompts": 200
+        }
+    },
     {
         "test_name": "serving_llama8B_bf16_tp2pp3_sharegpt",
         "qps_list": ["inf"],
@@ -233,6 +265,41 @@
             "num_prompts": 1000
         }
     },
+    {
+        "test_name": "serving_llama8B_bf16_tp4_random_128_128",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200, 1000],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 128,
+	    "random-output-len": 128,
+	    "ignore-eos": "",
+            "num_prompts": 1000
+        }
+    },
     {
         "test_name": "serving_llama8B_bf16_tp2pp3_random_128_128",
         "qps_list": ["inf"],
@@ -365,6 +432,38 @@
             "num_prompts": 200
         }
     },
+    {
+        "test_name": "serving_llama8B_int8_tp4_sharegpt",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "RedHatAI/Meta-Llama-3.1-8B-Instruct-quantized.w8a8",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "RedHatAI/Meta-Llama-3.1-8B-Instruct-quantized.w8a8",
+            "backend": "vllm",
+            "dataset_name": "sharegpt",
+            "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
+            "num_prompts": 200
+        }
+    },
     {
         "test_name": "serving_llama8B_int8_tp2pp3_sharegpt",
         "qps_list": ["inf"],
@@ -503,6 +602,41 @@
             "num_prompts": 1000
         }
     },
+    {
+        "test_name": "serving_llama8B_int8_tp4_random_128_128",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200, 1000],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "RedHatAI/Meta-Llama-3.1-8B-Instruct-quantized.w8a8",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "RedHatAI/Meta-Llama-3.1-8B-Instruct-quantized.w8a8",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 128,
+	    "random-output-len": 128,
+	    "ignore-eos": "",
+            "num_prompts": 1000
+        }
+    },
     {
         "test_name": "serving_llama8B_int8_tp2pp3_random_128_128",
         "qps_list": ["inf"],
@@ -638,6 +772,39 @@
             "num_prompts": 200
         }
     },
+    {
+        "test_name": "serving_llama8B_int4_tp4_sharegpt",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "hugging-quants/Meta-Llama-3.1-8B-Instruct-AWQ-INT4",
+	    "quantization": "awq",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "hugging-quants/Meta-Llama-3.1-8B-Instruct-AWQ-INT4",
+            "backend": "vllm",
+            "dataset_name": "sharegpt",
+            "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
+            "num_prompts": 200
+        }
+    },
     {
         "test_name": "serving_llama8B_int4_tp2pp3_sharegpt",
         "qps_list": ["inf"],
@@ -780,6 +947,42 @@
             "num_prompts": 1000
         }
     },
+    {
+        "test_name": "serving_llama8B_int4_tp4_random_128_128",
+        "qps_list": ["inf"],
+        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200, 1000],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "hugging-quants/Meta-Llama-3.1-8B-Instruct-AWQ-INT4",
+	    "quantization": "awq",
+            "tensor_parallel_size": 4,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "hugging-quants/Meta-Llama-3.1-8B-Instruct-AWQ-INT4",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 128,
+	    "random-output-len": 128,
+	    "ignore-eos": "",
+            "num_prompts": 1000
+        }
+    },
     {
         "test_name": "serving_llama8B_int4_tp2pp3_random_128_128",
         "qps_list": ["inf"],

.buildkite/nightly-benchmarks/tests/serving-tests-cpu.json

@@ -2,7 +2,7 @@
     {
         "test_name": "serving_llama8B_tp1_sharegpt",
         "qps_list": [1, 4, 16, "inf"],
-        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "max_concurrency_list": [32],
         "server_environment_variables": {
             "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
@@ -28,13 +28,13 @@
             "backend": "vllm",
             "dataset_name": "sharegpt",
             "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
-            "num_prompts": 200
+            "num_prompts": 32
         }
     },
     {
         "test_name": "serving_llama8B_tp2_sharegpt",
         "qps_list": [1, 4, 16, "inf"],
-        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "max_concurrency_list": [32],
         "server_environment_variables": {
             "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
@@ -60,13 +60,13 @@
             "backend": "vllm",
             "dataset_name": "sharegpt",
             "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
-            "num_prompts": 200
+            "num_prompts": 32
         }
     },
     {
-        "test_name": "serving_llama8B_tp4_sharegpt",
+        "test_name": "serving_llama8B_tp1_random_128_128",
         "qps_list": [1, 4, 16, "inf"],
-        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "max_concurrency_list": [32],
         "server_environment_variables": {
             "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
@@ -76,39 +76,7 @@
         },
         "server_parameters": {
             "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 4,
+            "tensor_parallel_size": 1,
-	    "dtype": "bfloat16",
-	    "distributed_executor_backend": "mp",
-	    "block_size": 128,
-	    "trust_remote_code": "",
-            "disable_log_stats": "",
-	    "enforce_eager": "",
-	    "max_num_batched_tokens": 2048,
-	    "max_num_seqs": 256,
-            "load_format": "dummy"
-        },
-        "client_parameters": {
-            "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "backend": "vllm",
-            "dataset_name": "sharegpt",
-            "dataset_path": "./ShareGPT_V3_unfiltered_cleaned_split.json",
-            "num_prompts": 200
-        }
-    },
-    {
-        "test_name": "serving_llama8B_tp4_random_1024_128",
-        "qps_list": [1, 4, 16, "inf"],
-        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
-        "server_environment_variables": {
-            "VLLM_RPC_TIMEOUT": 100000,
-	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
-	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
-	    "VLLM_CPU_SGL_KERNEL": 1,
-	    "VLLM_CPU_KVCACHE_SPACE": 40
-        },
-        "server_parameters": {
-            "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 4,
 	    "dtype": "bfloat16",
 	    "distributed_executor_backend": "mp",
 	    "block_size": 128,
@@ -124,16 +92,16 @@
             "model": "meta-llama/Llama-3.1-8B-Instruct",
             "backend": "vllm",
             "dataset_name": "random",
-	    "random-input-len": 1024,
+	    "random-input-len": 128,
 	    "random-output-len": 128,
 	    "ignore-eos": "",
-            "num_prompts": 100
+            "num_prompts": 32
         }
     },
     {
-        "test_name": "serving_llama8B_pp6_random_1024_128",
+        "test_name": "serving_llama8B_tp2_random_128_128",
         "qps_list": [1, 4, 16, "inf"],
-        "max_concurrency_list": [12, 16, 24, 32, 64, 128, 200],
+        "max_concurrency_list": [32],
         "server_environment_variables": {
             "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
@@ -143,7 +111,7 @@
         },
         "server_parameters": {
             "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "pipeline_parallel_size": 6,
+            "tensor_parallel_size": 2,
 	    "dtype": "bfloat16",
 	    "distributed_executor_backend": "mp",
 	    "block_size": 128,
@@ -159,10 +127,150 @@
             "model": "meta-llama/Llama-3.1-8B-Instruct",
             "backend": "vllm",
             "dataset_name": "random",
-	    "random-input-len": 1024,
+	    "random-input-len": 128,
 	    "random-output-len": 128,
 	    "ignore-eos": "",
-            "num_prompts": 100
+            "num_prompts": 32
+        }
+    },
+    {
+        "test_name": "serving_llama8B_tp1_random_128_2048",
+        "qps_list": [1, 4, 16, "inf"],
+        "max_concurrency_list": [32],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 1,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 128,
+	    "random-output-len": 2048,
+	    "ignore-eos": "",
+            "num_prompts": 32
+        }
+    },
+    {
+        "test_name": "serving_llama8B_tp2_random_128_2048",
+        "qps_list": [1, 4, 16, "inf"],
+        "max_concurrency_list": [32],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 2,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 128,
+	    "random-output-len": 2048,
+	    "ignore-eos": "",
+            "num_prompts": 32
+        }
+    },
+    {
+        "test_name": "serving_llama8B_tp1_random_2048_128",
+        "qps_list": [1, 4, 16, "inf"],
+        "max_concurrency_list": [32],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 1,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 2048,
+	    "random-output-len": 128,
+	    "ignore-eos": "",
+            "num_prompts": 32
+        }
+    },
+    {
+        "test_name": "serving_llama8B_tp2_random_2048_128",
+        "qps_list": [1, 4, 16, "inf"],
+        "max_concurrency_list": [32],
+        "server_environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
+	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
+	    "VLLM_CPU_KVCACHE_SPACE": 40
+        },
+        "server_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "tensor_parallel_size": 2,
+	    "dtype": "bfloat16",
+	    "distributed_executor_backend": "mp",
+	    "block_size": 128,
+	    "trust_remote_code": "",
+	    "enable_chunked_prefill": "",
+            "disable_log_stats": "",
+	    "enforce_eager": "",
+	    "max_num_batched_tokens": 2048,
+	    "max_num_seqs": 256,
+            "load_format": "dummy"
+        },
+        "client_parameters": {
+            "model": "meta-llama/Llama-3.1-8B-Instruct",
+            "backend": "vllm",
+            "dataset_name": "random",
+	    "random-input-len": 2048,
+	    "random-output-len": 128,
+	    "ignore-eos": "",
+            "num_prompts": 32
         }
     }
 ]

.buildkite/nightly-benchmarks/tests/throughput-tests-cpu.json

@@ -1,29 +1,24 @@
 [
     {
-        "test_name": "throughput_llama8B_tp1",
+        "test_name": "throughput_llama8B_tp2",
         "environment_variables": {
+            "VLLM_RPC_TIMEOUT": 100000,
 	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
+	    "VLLM_ENGINE_ITERATION_TIMEOUT_S": 120,
+	    "VLLM_CPU_SGL_KERNEL": 1,
 	    "VLLM_CPU_KVCACHE_SPACE": 40
         },
         "parameters": {
             "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 1,
+            "tensor_parallel_size": 2,
-            "load_format": "dummy",
+	    "dtype": "bfloat16",
-            "dataset": "./ShareGPT_V3_unfiltered_cleaned_split.json",
+	    "distributed_executor_backend": "mp",
-            "num_prompts": 200,
+	    "block_size": 128,
-            "backend": "vllm"
+	    "trust_remote_code": "",
-        }
+            "disable_log_stats": "",
-    },
+	    "enforce_eager": "",
-    {
+	    "max_num_batched_tokens": 2048,
-        "test_name": "throughput_llama8B_tp4",
+	    "max_num_seqs": 256,
-        "environment_variables": {
-	    "VLLM_ALLOW_LONG_MAX_MODEL_LEN": 1,
-	    "VLLM_CPU_KVCACHE_SPACE": 40
-        },
-        "parameters": {
-            "model": "meta-llama/Llama-3.1-8B-Instruct",
-            "tensor_parallel_size": 4,
-            "load_format": "dummy",
             "dataset": "./ShareGPT_V3_unfiltered_cleaned_split.json",
             "num_prompts": 200,
             "backend": "vllm"

.buildkite/release-pipeline.yaml

@@ -1,5 +1,5 @@
 steps:
-  # aarch64 + CUDA builds. PyTorch 2.8 aarch64 + CUDA wheel is only available on CUDA 12.9
+  # aarch64 + CUDA builds
   - label: "Build arm64 wheel - CUDA 12.9"
     depends_on: ~
     id: build-wheel-arm64-cuda-12-9
@@ -8,13 +8,28 @@ steps:
     commands:
       # #NOTE: torch_cuda_arch_list is derived from upstream PyTorch build files here:
       # https://github.com/pytorch/pytorch/blob/main/.ci/aarch64_linux/aarch64_ci_build.sh#L7
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg VLLM_MAIN_CUDA_VERSION=12.9 --build-arg torch_cuda_arch_list='8.7 9.0 10.0+PTX 12.0' --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg VLLM_MAIN_CUDA_VERSION=12.9 --build-arg torch_cuda_arch_list='8.7 8.9 9.0 10.0+PTX 12.0' --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
       - "mkdir artifacts"
       - "docker run --rm -v $(pwd)/artifacts:/artifacts_host vllm-ci:build-image bash -c 'cp -r dist /artifacts_host && chmod -R a+rw /artifacts_host'"
       - "bash .buildkite/scripts/upload-wheels.sh"
     env:
       DOCKER_BUILDKIT: "1"
 
+  # aarch64 build
+  - label: "Build arm64 CPU wheel"
+    depends_on: ~
+    id: build-wheel-arm64-cpu
+    agents:
+      queue: arm64_cpu_queue_postmerge
+    commands:
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg GIT_REPO_CHECK=1 --build-arg VLLM_BUILD_ACL=ON --tag vllm-ci:build-image --target vllm-build --progress plain -f docker/Dockerfile.cpu ."
+      - "mkdir artifacts"
+      - "docker run --rm -v $(pwd)/artifacts:/artifacts_host vllm-ci:build-image bash -c 'cp -r dist /artifacts_host && chmod -R a+rw /artifacts_host'"
+      - "bash .buildkite/scripts/upload-wheels.sh"
+    env:
+      DOCKER_BUILDKIT: "1"
+
+  # x86 + CUDA builds
   - label: "Build wheel - CUDA 12.8"
     depends_on: ~
     id: build-wheel-cuda-12-8
@@ -28,33 +43,33 @@ steps:
     env:
       DOCKER_BUILDKIT: "1"
 
-  - label: "Build wheel - CUDA 12.6"
-    depends_on: ~
-    id: build-wheel-cuda-12-6
-    agents:
-      queue: cpu_queue_postmerge
-    commands:
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.6.3 --build-arg torch_cuda_arch_list='7.0 7.5 8.0 8.9 9.0+PTX' --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
-      - "mkdir artifacts"
-      - "docker run --rm -v $(pwd)/artifacts:/artifacts_host vllm-ci:build-image bash -c 'cp -r dist /artifacts_host && chmod -R a+rw /artifacts_host'"
-      - "bash .buildkite/scripts/upload-wheels.sh"
-    env:
-      DOCKER_BUILDKIT: "1"
-
-  # x86 + CUDA builds
   - label: "Build wheel - CUDA 12.9"
     depends_on: ~
     id: build-wheel-cuda-12-9
     agents:
       queue: cpu_queue_postmerge
     commands:
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg torch_cuda_arch_list='7.0 7.5 8.0 8.9 9.0+PTX' --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
       - "mkdir artifacts"
       - "docker run --rm -v $(pwd)/artifacts:/artifacts_host vllm-ci:build-image bash -c 'cp -r dist /artifacts_host && chmod -R a+rw /artifacts_host'"
       - "bash .buildkite/scripts/upload-wheels.sh"
     env:
       DOCKER_BUILDKIT: "1"
 
+  - label: "Build wheel - CUDA 13.0"
+    depends_on: ~
+    id: build-wheel-cuda-13-0
+    agents:
+      queue: cpu_queue_postmerge
+    commands:
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=13.0.1 --build-arg BUILD_BASE_IMAGE=nvidia/cuda:13.0.1-devel-ubuntu22.04 --tag vllm-ci:build-image --target build --progress plain -f docker/Dockerfile ."
+      - "mkdir artifacts"
+      - "docker run --rm -v $(pwd)/artifacts:/artifacts_host vllm-ci:build-image bash -c 'cp -r dist /artifacts_host && chmod -R a+rw /artifacts_host'"
+      - "bash .buildkite/scripts/upload-wheels.sh"
+    env:
+      DOCKER_BUILDKIT: "1"
+
+  # Build release images (12.9)
   - label: "Build release image (x86)"
     depends_on: ~
     id: build-release-image-x86
@@ -62,13 +77,12 @@ steps:
       queue: cpu_queue_postmerge
     commands:
       - "aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7"
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.8.1 --build-arg FLASHINFER_AOT_COMPILE=true --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg FLASHINFER_AOT_COMPILE=true --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
       - "docker push public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m)"
       # re-tag to default image tag and push, just in case arm64 build fails
       - "docker tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT"
       - "docker push public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT"
 
-  # PyTorch 2.8 aarch64 + CUDA wheel is only available on CUDA 12.9
   - label: "Build release image (arm64)"
     depends_on: ~
     id: build-release-image-arm64
@@ -76,7 +90,7 @@ steps:
       queue: arm64_cpu_queue_postmerge
     commands:
       - "aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7"
-      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg FLASHINFER_AOT_COMPILE=true --build-arg torch_cuda_arch_list='8.7 9.0 10.0+PTX 12.0' --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --build-arg GIT_REPO_CHECK=1 --build-arg CUDA_VERSION=12.9.1 --build-arg FLASHINFER_AOT_COMPILE=true --build-arg torch_cuda_arch_list='8.7 8.9 9.0 10.0+PTX 12.0' --build-arg INSTALL_KV_CONNECTORS=true --tag public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m) --target vllm-openai --progress plain -f docker/Dockerfile ."
       - "docker push public.ecr.aws/q9t5s3a7/vllm-release-repo:$BUILDKITE_COMMIT-$(uname -m)"
 
   # Add job to create multi-arch manifest
@@ -142,6 +156,22 @@ steps:
     env:
       DOCKER_BUILDKIT: "1"
 
+  - block: "Build arm64 CPU release image"
+    key: block-arm64-cpu-release-image-build
+    depends_on: ~
+
+  - label: "Build and publish arm64 CPU release image"
+    depends_on: block-arm64-cpu-release-image-build
+    agents:
+      queue: arm64_cpu_queue_postmerge
+    commands:
+      - "aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7"
+      - "DOCKER_BUILDKIT=1 docker build --build-arg max_jobs=16 --build-arg GIT_REPO_CHECK=1 --tag public.ecr.aws/q9t5s3a7/vllm-arm64-cpu-release-repo:$(buildkite-agent meta-data get release-version) --tag public.ecr.aws/q9t5s3a7/vllm-arm64-cpu-release-repo:latest --progress plain --target vllm-openai -f docker/Dockerfile.cpu ."
+      - "docker push public.ecr.aws/q9t5s3a7/vllm-arm64-cpu-release-repo:latest"
+      - "docker push public.ecr.aws/q9t5s3a7/vllm-arm64-cpu-release-repo:$(buildkite-agent meta-data get release-version)"
+    env:
+      DOCKER_BUILDKIT: "1"
+
   - label: "Build and publish nightly multi-arch image to DockerHub"
     depends_on:
       - create-multi-arch-manifest

.buildkite/scripts/hardware_ci/run-cpu-test-ppc64le.sh

@@ -25,25 +25,28 @@ function cpu_tests() {
 
   # offline inference
   podman exec -it "$container_id" bash -c "
-    set -e
+    set -xve
-    python3 examples/offline_inference/basic/generate.py --model facebook/opt-125m"
+    python3 examples/offline_inference/basic/generate.py --model facebook/opt-125m" >> $HOME/test_basic.log
 
   # Run basic model test
   podman exec -it "$container_id" bash -c "
-    set -e
+    set -evx
     pip install pytest pytest-asyncio einops peft Pillow soundfile transformers_stream_generator matplotlib
     pip install sentence-transformers datamodel_code_generator
-    pytest -v -s tests/models/language/generation/test_bart.py -m cpu_model
+
+    # Note: disable Bart until supports V1
+    # pytest -v -s tests/models/language/generation/test_bart.py -m cpu_model
     pytest -v -s tests/models/language/generation/test_common.py::test_models[False-5-32-openai-community/gpt2]
     pytest -v -s tests/models/language/generation/test_common.py::test_models[False-5-32-facebook/opt-125m]
     pytest -v -s tests/models/language/generation/test_common.py::test_models[False-5-32-google/gemma-1.1-2b-it]
     pytest -v -s tests/models/language/pooling/test_classification.py::test_models[float-jason9693/Qwen2.5-1.5B-apeach]
-    pytest -v -s tests/models/language/pooling/test_embedding.py -m cpu_model"
+    # TODO: Below test case tests/models/language/pooling/test_embedding.py::test_models[True-ssmits/Qwen2-7B-Instruct-embed-base] fails on ppc64le. Disabling it for time being.
+    # pytest -v -s tests/models/language/pooling/test_embedding.py -m cpu_model" >> $HOME/test_rest.log
 }
 
 # All of CPU tests are expected to be finished less than 40 mins.
 
 export container_id
 export -f cpu_tests
-timeout 40m bash -c cpu_tests
+timeout 120m bash -c cpu_tests
 

.buildkite/scripts/hardware_ci/run-cpu-test.sh

@@ -70,7 +70,7 @@ function cpu_tests() {
   docker exec cpu-test-"$NUMA_NODE" bash -c "
     set -e
     pytest -x -s -v \
-    tests/quantization/test_compressed_tensors.py::test_compressed_tensors_w8a8_logprobs[False-10-32-neuralmagic/Llama-3.2-1B-quantized.w8a8]"
+    tests/quantization/test_compressed_tensors.py::test_compressed_tensors_w8a8_logprobs"
 
   # Note: disable it until supports V1
   # Run AWQ test

.buildkite/scripts/hardware_ci/run-tpu-v1-test-part2.sh

@@ -64,10 +64,9 @@ python3 -m pip install --progress-bar off git+https://github.com/thuml/depyf.git
     && python3 -m pip install --progress-bar off "lm-eval @ git+https://github.com/EleutherAI/lm-evaluation-harness.git@206b7722158f58c35b7ffcd53b035fdbdda5126d" \
     && python3 -m pip install --progress-bar off hf-transfer tblib==3.1.0
 echo "--- Python dependencies installed ---"
-export VLLM_USE_V1=1
+
 export VLLM_XLA_CHECK_RECOMPILATION=1
 export VLLM_XLA_CACHE_PATH=
-echo "Using VLLM V1"
 
 echo "--- Hardware Information ---"
 # tpu-info

.buildkite/scripts/hardware_ci/run-tpu-v1-test.sh

@@ -64,10 +64,9 @@ python3 -m pip install --progress-bar off git+https://github.com/thuml/depyf.git
     && python3 -m pip install --progress-bar off "lm-eval @ git+https://github.com/EleutherAI/lm-evaluation-harness.git@206b7722158f58c35b7ffcd53b035fdbdda5126d" \
     && python3 -m pip install --progress-bar off hf-transfer tblib==3.1.0
 echo "--- Python dependencies installed ---"
-export VLLM_USE_V1=1
+
 export VLLM_XLA_CHECK_RECOMPILATION=1
 export VLLM_XLA_CACHE_PATH=
-echo "Using VLLM V1"
 
 echo "--- Hardware Information ---"
 # tpu-info

.buildkite/scripts/hardware_ci/run-xpu-test.sh

@@ -44,6 +44,5 @@ docker run \
     pytest -v -s v1/structured_output
     pytest -v -s v1/spec_decode --ignore=v1/spec_decode/test_max_len.py --ignore=v1/spec_decode/test_tree_attention.py
     pytest -v -s v1/kv_connector/unit --ignore=v1/kv_connector/unit/test_multi_connector.py --ignore=v1/kv_connector/unit/test_nixl_connector.py --ignore=v1/kv_connector/unit/test_shared_storage_connector.py
-    pytest -v -s v1/test_metrics
     pytest -v -s v1/test_serial_utils.py
 '

.buildkite/scripts/tpu/quantized_v6e_1.env

@@ -9,6 +9,6 @@ MAX_NUM_BATCHED_TOKENS=1024
 TENSOR_PARALLEL_SIZE=1
 MAX_MODEL_LEN=2048
 DOWNLOAD_DIR=/mnt/disks/persist
-EXPECTED_THROUGHPUT=10.0
+EXPECTED_THROUGHPUT=8.7
 INPUT_LEN=1800
 OUTPUT_LEN=128

.buildkite/scripts/tpu/run_bm.sh

@@ -42,7 +42,7 @@ echo "lanching vllm..."
 echo "logging to $VLLM_LOG"
 echo
 
-VLLM_USE_V1=1 vllm serve $MODEL \
+vllm serve $MODEL \
  --seed 42 \
  --max-num-seqs $MAX_NUM_SEQS \
  --max-num-batched-tokens $MAX_NUM_BATCHED_TOKENS \

.buildkite/scripts/upload-wheels.sh

@@ -58,33 +58,25 @@ python3 .buildkite/generate_index.py --wheel "$normal_wheel"
 aws s3 cp "$wheel" "s3://vllm-wheels/$BUILDKITE_COMMIT/"
 aws s3 cp "$normal_wheel" "s3://vllm-wheels/$BUILDKITE_COMMIT/"
 
-if [[ $normal_wheel == *"cu126"* ]]; then
+if [[ $normal_wheel == *"cu129"* ]]; then
-    # if $normal_wheel matches cu126, do not upload the index.html
-    echo "Skipping index files for cu126 wheels"
-elif [[ $normal_wheel == *"cu128"* ]]; then
-    # if $normal_wheel matches cu128, do not upload the index.html
-    echo "Skipping index files for cu128 wheels"
-else
     # only upload index.html for cu129 wheels (default wheels) as it
     # is available on both x86 and arm64
     aws s3 cp index.html "s3://vllm-wheels/$BUILDKITE_COMMIT/vllm/index.html"
     aws s3 cp "s3://vllm-wheels/nightly/index.html" "s3://vllm-wheels/$BUILDKITE_COMMIT/index.html"
+else
+    echo "Skipping index files for non-cu129 wheels"
 fi
 
 # generate index for nightly
 aws s3 cp "$wheel" "s3://vllm-wheels/nightly/"
 aws s3 cp "$normal_wheel" "s3://vllm-wheels/nightly/"
 
-if [[ $normal_wheel == *"cu126"* ]]; then
+if [[ $normal_wheel == *"cu129"* ]]; then
-    # if $normal_wheel matches cu126, do not upload the index.html
-    echo "Skipping index files for cu126 wheels"
-elif [[ $normal_wheel == *"cu128"* ]]; then
-    # if $normal_wheel matches cu128, do not upload the index.html
-    echo "Skipping index files for cu128 wheels"
-else
     # only upload index.html for cu129 wheels (default wheels) as it
     # is available on both x86 and arm64
     aws s3 cp index.html "s3://vllm-wheels/nightly/vllm/index.html"
+else
+    echo "Skipping index files for non-cu129 wheels"
 fi
 
 aws s3 cp "$wheel" "s3://vllm-wheels/$version/"

.buildkite/test-pipeline.yaml

@@ -38,7 +38,7 @@ steps:
 - label: Pytorch Nightly Dependency Override Check # 2min
   # if this test fails, it means the nightly torch version is not compatible with some
   # of the dependencies. Please check the error message and add the package to whitelist
-  # in /vllm/tools/generate_nightly_torch_test.py
+  # in /vllm/tools/pre_commit/generate_nightly_torch_test.py
   soft_fail: true
   source_file_dependencies:
   - requirements/nightly_torch_test.txt
@@ -172,6 +172,8 @@ steps:
   - tests/v1/engine/test_engine_core_client.py
   - tests/distributed/test_symm_mem_allreduce.py
   commands:
+  # https://github.com/NVIDIA/nccl/issues/1838
+  - export NCCL_CUMEM_HOST_ENABLE=0
   # test with torchrun tp=2 and external_dp=2
   - torchrun --nproc-per-node=4 distributed/test_torchrun_example.py
   # test with torchrun tp=2 and pp=2
@@ -203,6 +205,24 @@ steps:
   - VLLM_ALLOW_INSECURE_SERIALIZATION=1 RAY_DEDUP_LOGS=0 python3 rlhf_colocate.py
   - popd
 
+- label: Distributed Tests (8 GPUs) # 4min
+  timeout_in_minutes: 10
+  gpu: h100
+  num_gpus: 8
+  working_dir: "/vllm-workspace/tests"
+  source_file_dependencies:
+  - examples/offline_inference/torchrun_dp_example.py
+  - vllm/config/parallel.py
+  - vllm/distributed/
+  - vllm/v1/engine/llm_engine.py
+  - vllm/v1/executor/uniproc_executor.py
+  - vllm/v1/worker/gpu_worker.py
+  commands:
+  # https://github.com/NVIDIA/nccl/issues/1838
+  - export NCCL_CUMEM_HOST_ENABLE=0
+  # test with torchrun tp=2 and dp=4 with ep
+  - torchrun --nproc-per-node=8 ../examples/offline_inference/torchrun_dp_example.py --tp-size=2 --pp-size=1 --dp-size=4 --enable-ep
+
 - label: EPLB Algorithm Test # 5min
   timeout_in_minutes: 15
   working_dir: "/vllm-workspace/tests"
@@ -296,6 +316,7 @@ steps:
     - tests/v1
   commands:
     # split the test to avoid interference
+    - pytest -v -s -m 'not cpu_test' v1/core
     - pytest -v -s v1/executor
     - pytest -v -s v1/kv_offload
     - pytest -v -s v1/sample
@@ -310,6 +331,15 @@ steps:
     - pip install -U git+https://github.com/robertgshaw2-redhat/lm-evaluation-harness.git@streaming-api
     - pytest -v -s entrypoints/openai/correctness/test_lmeval.py::test_lm_eval_accuracy_v1_engine
 
+- label: V1 Test attention (H100) # 10min
+  timeout_in_minutes: 30
+  gpu: h100
+  source_file_dependencies:
+    - vllm/v1/attention
+    - tests/v1/attention
+  commands:
+    - pytest -v -s v1/attention
+
 - label: V1 Test others (CPU) # 5 mins
   source_file_dependencies:
     - vllm/
@@ -317,7 +347,7 @@ steps:
   no_gpu: true
   commands:
     # split the test to avoid interference
-    - pytest -v -s v1/core
+    - pytest -v -s -m 'cpu_test' v1/core
     - pytest -v -s v1/structured_output
     - pytest -v -s v1/test_serial_utils.py
     - pytest -v -s -m 'cpu_test' v1/kv_connector/unit
@@ -348,7 +378,8 @@ steps:
     - python3 offline_inference/basic/embed.py
     - python3 offline_inference/basic/score.py
     - python3 offline_inference/spec_decode.py --test --method eagle --num_spec_tokens 3 --dataset-name hf --dataset-path philschmid/mt-bench --num-prompts 80 --temp 0 --top-p 1.0 --top-k -1 --tp 1 --enable-chunked-prefill --max-model-len 2048
-    - python3 offline_inference/spec_decode.py --test --method eagle3 --num_spec_tokens 3 --dataset-name hf --dataset-path philschmid/mt-bench --num-prompts 80 --temp 0 --top-p 1.0 --top-k -1 --tp 1 --enable-chunked-prefill --max-model-len 2048
+    # https://github.com/vllm-project/vllm/pull/26682 uses slightly more memory in PyTorch 2.9+ causing this test to OOM in 1xL4 GPU
+    - python3 offline_inference/spec_decode.py --test --method eagle3 --num_spec_tokens 3 --dataset-name hf --dataset-path philschmid/mt-bench --num-prompts 80 --temp 0 --top-p 1.0 --top-k -1 --tp 1 --enable-chunked-prefill --max-model-len 1536
 
 - label: Platform Tests (CUDA) # 4min
   timeout_in_minutes: 15
@@ -383,7 +414,12 @@ steps:
       --num-shards=$$BUILDKITE_PARALLEL_JOB_COUNT \
       --ignore=lora/test_chatglm3_tp.py \
       --ignore=lora/test_llama_tp.py \
-      --ignore=lora/test_llm_with_multi_loras.py
+      --ignore=lora/test_llm_with_multi_loras.py \
+      --ignore=lora/test_olmoe_tp.py \
+      --ignore=lora/test_deepseekv2_tp.py \
+      --ignore=lora/test_gptoss.py \
+      --ignore=lora/test_qwen3moe_tp.py
+
   parallelism: 4
 
 - label: PyTorch Compilation Unit Tests # 15min
@@ -399,11 +435,10 @@ steps:
     - pytest -v -s compile/test_fusion_attn.py
     - pytest -v -s compile/test_functionalization.py
     - pytest -v -s compile/test_silu_mul_quant_fusion.py
-    - pytest -v -s compile/test_sequence_parallelism.py
-    - pytest -v -s compile/test_async_tp.py
     - pytest -v -s compile/test_fusion_all_reduce.py
     - pytest -v -s compile/test_decorator.py
     - pytest -v -s compile/test_noop_elimination.py
+    - pytest -v -s compile/test_aot_compile.py
 
 - label: PyTorch Fullgraph Smoke Test # 15min
   timeout_in_minutes: 30
@@ -416,8 +451,8 @@ steps:
   - pytest -v -s compile/test_basic_correctness.py
   - pytest -v -s compile/piecewise/
 
-- label: PyTorch Fullgraph Test # 20min
+- label: PyTorch Fullgraph Test # 22min
-  timeout_in_minutes: 30
+  timeout_in_minutes: 35
   mirror_hardwares: [amdexperimental]
   torch_nightly: true
   source_file_dependencies:
@@ -425,6 +460,19 @@ steps:
   - tests/compile
   commands:
   - pytest -v -s compile/test_full_graph.py
+  - pytest -v -s compile/test_fusions_e2e.py
+
+- label: Cudagraph test
+  timeout_in_minutes: 20
+  mirror_hardwares: [amdexperimental]
+  source_file_dependencies:
+  - tests/v1/cudagraph
+  - vllm/v1/cudagraph_dispatcher.py
+  - vllm/config/compilation.py
+  - vllm/compilation
+  commands:
+    - pytest -v -s v1/cudagraph/test_cudagraph_dispatch.py
+    - pytest -v -s v1/cudagraph/test_cudagraph_mode.py
 
 - label: Kernels Core Operation Test # 48min
   timeout_in_minutes: 75
@@ -432,8 +480,9 @@ steps:
   source_file_dependencies:
   - csrc/
   - tests/kernels/core
+  - tests/kernels/test_top_k_per_row.py
   commands:
-    - pytest -v -s kernels/core
+    - pytest -v -s kernels/core kernels/test_top_k_per_row.py
 
 - label: Kernels Attention Test %N # 23min
   timeout_in_minutes: 35
@@ -467,6 +516,8 @@ steps:
   - tests/kernels/moe
   - vllm/model_executor/layers/fused_moe/
   - vllm/distributed/device_communicators/
+  - vllm/envs.py
+  - vllm/config
   commands:
     - pytest -v -s kernels/moe --shard-id=$$BUILDKITE_PARALLEL_JOB --num-shards=$$BUILDKITE_PARALLEL_JOB_COUNT
   parallelism: 2
@@ -526,8 +577,9 @@ steps:
   # since torchao nightly is only compatible with torch nightly currently
   # https://github.com/pytorch/ao/issues/2919, we'll have to skip new torchao tests for now
   # we can only upgrade after this is resolved
-  - pip install --pre torchao==0.13.0.dev20250814 --index-url https://download.pytorch.org/whl/nightly/cu128
+  # TODO(jerryzh168): resolve the above comment
-  - VLLM_TEST_FORCE_LOAD_FORMAT=auto pytest -v -s quantization/
+  - uv pip install --system torchao==0.13.0 --index-url https://download.pytorch.org/whl/cu129
+  - VLLM_TEST_FORCE_LOAD_FORMAT=auto pytest -v -s quantization/ --ignore quantization/test_blackwell_moe.py
 
 - label: LM Eval Small Models # 53min
   timeout_in_minutes: 75
@@ -676,8 +728,10 @@ steps:
   - vllm/
   - tests/models/language/generation
   commands:
-    # Install causal-conv1d for plamo2 models here, as it is not compatible with pip-compile.
+    # Install fast path packages for testing against transformers
-    - pip install 'git+https://github.com/Dao-AILab/causal-conv1d@v1.5.0.post8'
+    # Note: also needed to run plamo2 model in vLLM
+    - uv pip install --system --no-build-isolation 'git+https://github.com/state-spaces/mamba@v2.2.5'
+    - uv pip install --system --no-build-isolation 'git+https://github.com/Dao-AILab/causal-conv1d@v1.5.2'
     - pytest -v -s models/language/generation -m '(not core_model) and (not hybrid_model)'
 
 - label: Language Models Test (PPL)
@@ -732,6 +786,16 @@ steps:
     - pytest -v -s models/multimodal -m core_model --ignore models/multimodal/generation/test_whisper.py --ignore models/multimodal/processing
     - cd .. && VLLM_WORKER_MULTIPROC_METHOD=spawn pytest -v -s tests/models/multimodal/generation/test_whisper.py -m core_model  # Otherwise, mp_method="spawn" doesn't work
 
+- label: Multi-Modal Accuracy Eval (Small Models) # 50min
+  timeout_in_minutes: 70
+  working_dir: "/vllm-workspace/.buildkite/lm-eval-harness"
+  source_file_dependencies:
+  - vllm/multimodal/
+  - vllm/inputs/
+  - vllm/v1/core/
+  commands:
+  - pytest -s -v test_lm_eval_correctness.py --config-list-file=configs/models-mm-small.txt --tp-size=1
+
 - label: Multi-Modal Models Test (Extended) 1
   mirror_hardwares: [amdexperimental]
   optional: true
@@ -795,8 +859,8 @@ steps:
     # Whisper needs spawn method to avoid deadlock
     - VLLM_WORKER_MULTIPROC_METHOD=spawn python3 examples/offline_inference/audio_language.py --model-type whisper
 
-- label: Blackwell Test # 38 min
+- label: Blackwell Test # 21 min
-  timeout_in_minutes: 60
+  timeout_in_minutes: 30
   working_dir: "/vllm-workspace/"
   gpu: b200
   # optional: true
@@ -809,8 +873,6 @@ steps:
   - vllm/model_executor/layers/fused_moe/flashinfer_cutlass_prepare_finalize.py
   - vllm/model_executor/layers/quantization/utils/flashinfer_utils.py
   - vllm/v1/attention/backends/flashinfer.py
-  - vllm/compilation/fusion.py
-  - vllm/compilation/fusion_attn.py
   commands:
     - nvidia-smi
     - python3 examples/offline_inference/basic/chat.py
@@ -827,13 +889,32 @@ steps:
     - pytest -v -s tests/kernels/quantization/test_nvfp4_scaled_mm.py
     - pytest -v -s tests/kernels/quantization/test_flashinfer_scaled_mm.py
     - pytest -v -s tests/kernels/quantization/test_flashinfer_nvfp4_scaled_mm.py
+    - pytest -v -s tests/kernels/quantization/test_nvfp4_qutlass.py
+    - pytest -v -s tests/kernels/quantization/test_mxfp4_qutlass.py
     - pytest -v -s tests/kernels/moe/test_nvfp4_moe.py
-    - pytest -v -s tests/kernels/moe/test_mxfp4_moe.py
+    - pytest -v -s tests/kernels/moe/test_ocp_mx_moe.py
-    # Fusion
-    - pytest -v -s tests/compile/test_fusion_all_reduce.py
-    - pytest -v -s tests/compile/test_fusion_attn.py::test_attention_quant_pattern
     - pytest -v -s tests/kernels/moe/test_flashinfer.py
+
+- label: Blackwell Fusion Tests # 30 min
+  timeout_in_minutes: 40
+  working_dir: "/vllm-workspace/"
+  gpu: b200
+  source_file_dependencies:
+  - csrc/quantization/fp4/
+  - vllm/model_executor/layers/quantization/utils/flashinfer_utils.py
+  - vllm/v1/attention/backends/flashinfer.py
+  - vllm/compilation/
+  # can affect pattern matching
+  - vllm/model_executor/layers/layernorm.py
+  - vllm/model_executor/layers/activation.py
+  - vllm/model_executor/layers/quantization/input_quant_fp8.py
+  commands:
+    - nvidia-smi
+    - pytest -v -s tests/compile/test_fusion_attn.py
     - pytest -v -s tests/compile/test_silu_mul_quant_fusion.py
+    # this runner has 2 GPUs available even though num_gpus=2 is not set
+    - pytest -v -s tests/compile/test_fusion_all_reduce.py
+    - pytest -v -s tests/compile/test_fusions_e2e.py
 
 - label: Blackwell GPT-OSS Eval
   timeout_in_minutes: 60
@@ -867,7 +948,7 @@ steps:
     - pytest -s -v tests/quantization/test_blackwell_moe.py
 
 - label: Blackwell LM Eval Small Models
-  timeout_in_minutes: 75
+  timeout_in_minutes: 120
   gpu: b200
   optional: true # run on nightlies
   source_file_dependencies:
@@ -940,6 +1021,8 @@ steps:
   - tests/v1/shutdown
   - tests/v1/worker/test_worker_memory_snapshot.py
   commands:
+  # https://github.com/NVIDIA/nccl/issues/1838
+  - export NCCL_CUMEM_HOST_ENABLE=0
   - TP_SIZE=1 DP_SIZE=2 pytest -v -s v1/distributed/test_async_llm_dp.py
   - TP_SIZE=1 DP_SIZE=2 pytest -v -s v1/distributed/test_external_lb_dp.py
   - DP_SIZE=2 pytest -v -s v1/entrypoints/openai/test_multi_api_servers.py
@@ -947,6 +1030,7 @@ steps:
   - pytest -v -s ./compile/test_basic_correctness.py
   - pytest -v -s ./compile/test_wrapper.py
   - VLLM_TEST_SAME_HOST=1 torchrun --nproc-per-node=4 distributed/test_same_node.py | grep 'Same node test passed'
+  - VLLM_TEST_SAME_HOST=1 VLLM_TEST_WITH_DEFAULT_DEVICE_SET=1 torchrun --nproc-per-node=4 distributed/test_same_node.py | grep 'Same node test passed'
   - pytest -v -s distributed/test_sequence_parallel.py
   - CUDA_VISIBLE_DEVICES=0,1 pytest -v -s v1/shutdown
   - pytest -v -s v1/worker/test_worker_memory_snapshot.py
@@ -990,6 +1074,11 @@ steps:
   - pytest -v -s plugins_tests/test_io_processor_plugins.py
   - pip uninstall prithvi_io_processor_plugin -y
   # end io_processor plugins test
+  # begin stat_logger plugins test
+  - pip install -e ./plugins/vllm_add_dummy_stat_logger
+  - pytest -v -s plugins_tests/test_stats_logger_plugins.py
+  - pip uninstall dummy_stat_logger -y
+  # end stat_logger plugins test
   # other tests continue here:
   - pytest -v -s plugins_tests/test_scheduler_plugins.py
   - pip install -e ./plugins/vllm_add_dummy_model
@@ -1029,6 +1118,7 @@ steps:
     - pytest -v -s -x lora/test_chatglm3_tp.py
     - pytest -v -s -x lora/test_llama_tp.py
     - pytest -v -s -x lora/test_llm_with_multi_loras.py
+    - pytest -v -s -x lora/test_olmoe_tp.py
 
 
 - label: Weight Loading Multiple GPU Test  # 33min
@@ -1055,6 +1145,17 @@ steps:
   commands:
     - bash weight_loading/run_model_weight_loading_test.sh -c weight_loading/models-large.txt
 
+- label: NixlConnector PD accuracy tests (Distributed) # 30min
+  timeout_in_minutes: 30
+  working_dir: "/vllm-workspace/tests"
+  num_gpus: 4
+  source_file_dependencies:
+    - vllm/distributed/kv_transfer/kv_connector/v1/nixl_connector.py
+    - tests/v1/kv_connector/nixl_integration/
+  commands:
+    - uv pip install --system -r /vllm-workspace/requirements/kv_connectors.txt
+    - bash v1/kv_connector/nixl_integration/tp_config_sweep_accuracy_test.sh
+
 
 ##### multi gpus test #####
 ##### A100 test #####
@@ -1086,12 +1187,16 @@ steps:
   - pytest -s -v test_lm_eval_correctness.py --config-list-file=configs/models-large.txt --tp-size=4
 
 ##### H200 test #####
-- label: Distrubted Tests (H200) # optional
+- label: Distributed Tests (H200) # optional
   gpu: h200
   optional: true
   working_dir: "/vllm-workspace/"
   num_gpus: 2
   commands:
+    - pytest -v -s tests/compile/test_async_tp.py
+    - pytest -v -s tests/compile/test_sequence_parallelism.py
+    - pytest -v -s tests/compile/test_fusion_all_reduce.py
+    - pytest -v -s tests/compile/test_fusions_e2e.py::test_tp2_attn_quant_allreduce_rmsnorm
     - pytest -v -s tests/distributed/test_context_parallel.py
     - CUDA_VISIBLE_DEVICES=1,2 VLLM_ALL2ALL_BACKEND=deepep_high_throughput VLLM_USE_DEEP_GEMM=1 VLLM_LOGGING_LEVEL=DEBUG python3 examples/offline_inference/data_parallel.py --model Qwen/Qwen1.5-MoE-A2.7B --tp-size=1  --dp-size=2 --max-model-len 2048
 

.coveragerc

@@ -1,5 +1,10 @@
 [run]
-source = vllm
+# Track the installed vllm package (this is what actually gets imported during tests)
+# Use wildcard pattern to match the installed location
+source =
+    vllm
+    */dist-packages/vllm
+    */site-packages/vllm
 omit =
     */tests/*
     */test_*
@@ -12,6 +17,16 @@ omit =
     */benchmarks/*
     */docs/*
 
+[paths]
+# Map all possible vllm locations to a canonical "vllm" path
+# This ensures coverage.combine properly merges data from different test runs
+source =
+    vllm
+    /vllm-workspace/src/vllm
+    /vllm-workspace/vllm
+    */site-packages/vllm
+    */dist-packages/vllm
+
 [report]
 exclude_lines =
     pragma: no cover

.git-blame-ignore-revs

@@ -0,0 +1,4 @@
+# Migrate from `yapf` & `isort` to `ruff`
+d6953beb91da4e9c99be4c0a1304a2d24189535c
+# Convert `Optional[x]` to `x | None` and `Union[x, y]` to `x | y`
+8fcaaf6a165e661f63fc51be906bc05b0767332f

.github/CODEOWNERS

@@ -5,10 +5,8 @@
 /vllm/attention @LucasWilkinson
 /vllm/attention/backends/abstract.py @WoosukKwon @zhuohan123 @youkaichao @alexm-redhat @comaniac @njhill
 /vllm/executor/executor_base.py @zhuohan123 @youkaichao @alexm-redhat @comaniac @njhill @22quinn
-/vllm/worker/worker_base.py @zhuohan123 @youkaichao @alexm-redhat @comaniac @njhill @22quinn
+/vllm/model_executor/layers/fused_moe @mgoin @pavanimajety
-/vllm/model_executor/layers/fused_moe @mgoin
+/vllm/model_executor/layers/quantization @mgoin @robertgshaw2-redhat @tlrmchlsmth @yewentao256 @pavanimajety
-/vllm/model_executor/layers/sampler.py @zhuohan123 @youkaichao @alexm-redhat @comaniac @njhill @NickLucche
-/vllm/model_executor/layers/quantization @mgoin @robertgshaw2-redhat @tlrmchlsmth @yewentao256
 /vllm/model_executor/layers/mamba @tdoublep
 /vllm/model_executor/model_loader @22quinn
 /vllm/multimodal @DarkLight1337 @ywang96 @NickLucche
@@ -26,9 +24,9 @@ CMakeLists.txt @tlrmchlsmth @LucasWilkinson
 /vllm/config/cache.py @simon-mo @WoosukKwon @youkaichao @robertgshaw2-redhat @mgoin @tlrmchlsmth @houseroad @hmellor @yewentao256 @ProExpertProg @heheda12345
 
 # vLLM V1
-/vllm/v1 @WoosukKwon @robertgshaw2-redhat @njhill @ywang96 @comaniac @alexm-redhat
 /vllm/v1/attention @LucasWilkinson
-/vllm/v1/attention/backends/flashinfer.py @mgoin
+/vllm/v1/attention/backends/mla @pavanimajety
+/vllm/v1/attention/backends/flashinfer.py @mgoin @pavanimajety
 /vllm/v1/attention/backends/triton_attn.py @tdoublep
 /vllm/v1/core @WoosukKwon @robertgshaw2-redhat @njhill @ywang96 @comaniac @alexm-redhat @heheda12345 @ApostaC
 /vllm/v1/sample @22quinn @houseroad @njhill
@@ -47,7 +45,7 @@ CMakeLists.txt @tlrmchlsmth @LucasWilkinson
 /tests/kernels @mgoin @tlrmchlsmth @WoosukKwon @yewentao256
 /tests/models @DarkLight1337 @ywang96
 /tests/multimodal @DarkLight1337 @ywang96 @NickLucche
-/tests/quantization @mgoin @robertgshaw2-redhat @yewentao256
+/tests/quantization @mgoin @robertgshaw2-redhat @yewentao256 @pavanimajety
 /tests/test_inputs.py @DarkLight1337 @ywang96
 /tests/v1/entrypoints/llm/test_struct_output_generate.py @mgoin @russellb @aarnphm
 /tests/v1/structured_output @mgoin @russellb @aarnphm
@@ -60,7 +58,7 @@ CMakeLists.txt @tlrmchlsmth @LucasWilkinson
 /tests/v1/offloading @ApostaC
 
 # Transformers backend
-/vllm/model_executor/models/transformers.py @hmellor
+/vllm/model_executor/models/transformers @hmellor
 /tests/models/test_transformers.py @hmellor
 
 # Docs
@@ -121,3 +119,11 @@ mkdocs.yaml @hmellor
 
 # KVConnector installation files
 /requirements/kv_connectors.txt @NickLucche
+
+# Pooling models
+/examples/*/pooling/ @noooop
+/tests/models/*/pooling* @noooop
+/tests/entrypoints/pooling @noooop
+/vllm/config/pooler.py @noooop
+/vllm/pooling_params.py @noooop
+/vllm/model_executor/layers/pooler.py @noooop

.github/mergify.yml

@@ -11,6 +11,8 @@ pull_request_rules:
     label:
       add:
         - documentation
+    comment:
+      message: "Documentation preview: https://vllm--{{number}}.org.readthedocs.build/en/{{number}}/"
 
 - name: label-ci-build
   description: Automatically apply ci/build label

.github/workflows/issue_autolabel.yml

@@ -13,6 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Label issues based on keywords
+        id: label-step
         uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd  # v8.0.0
         with:
           script: |
@@ -42,7 +43,6 @@ jobs:
                     searchIn: "body"
                   },
                 ],
-                
                 // Substring search - matches anywhere in text (partial matches)
                 substrings: [
                   {
@@ -89,14 +89,12 @@ jobs:
                     term: "hip_",
                     searchIn: "both"
                   },
-                  
                   // ROCm tools and libraries
                   {
                     term: "hipify",
                     searchIn: "both"
                   },
                 ],
-                
                 // Regex patterns - for complex pattern matching
                 regexPatterns: [
                   {
@@ -107,13 +105,17 @@ jobs:
                   }
                 ],
               },
+              // Add more label configurations here as needed
+              // example: {
+              //   keywords: [...],
+              //   substrings: [...],
+              //   regexPatterns: [...]
+              // },
             };
-            
             // Helper function to create regex based on search type
             function createSearchRegex(term, type) {
               // Escape special regex characters in the term
               const escapedTerm = term.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
-              
               switch (type) {
                 case 'keyword':
                   // Word boundary search - matches whole words only
@@ -125,16 +127,13 @@ jobs:
                   throw new Error(`Unknown search type: ${type}`);
               }
             }
-            
             // Helper function to find matching terms in text with line information
             function findMatchingTermsWithLines(text, searchTerms = [], searchType = 'keyword', searchLocation = '') {
               const matches = [];
               const lines = text.split('\n');
-              
               for (const termConfig of searchTerms) {
                 let regex;
                 let term, searchIn, pattern, description, flags;
-                
                 // Handle different input formats (string or object)
                 if (typeof termConfig === 'string') {
                   term = termConfig;
@@ -146,21 +145,17 @@ jobs:
                   description = termConfig.description;
                   flags = termConfig.flags;
                 }
-                
                 // Skip if this term shouldn't be searched in the current location
                 if (searchIn !== 'both' && searchIn !== searchLocation) {
                   continue;
                 }
-                
                 // Create appropriate regex
                 if (searchType === 'regex') {
                   regex = new RegExp(pattern, flags || "gi");
                 } else {
                   regex = createSearchRegex(term, searchType);
                 }
-                
                 const termMatches = [];
-                
                 // Check each line for matches
                 lines.forEach((line, lineIndex) => {
                   const lineMatches = line.match(regex);
@@ -175,15 +170,14 @@ jobs:
                         originalTerm: term || pattern,
                         description: description,
                         // Show context around the match in the line
-                        context: line.length > 100 ? 
+                        context: line.length > 100 ?
-                          line.substring(Math.max(0, line.toLowerCase().indexOf(match.toLowerCase()) - 30), 
+                          line.substring(Math.max(0, line.toLowerCase().indexOf(match.toLowerCase()) - 30),
-                                       line.toLowerCase().indexOf(match.toLowerCase()) + match.length + 30) + '...' 
+                                       line.toLowerCase().indexOf(match.toLowerCase()) + match.length + 30) + '...'
                           : line.trim()
                       });
                     });
                   }
                 });
-                
                 if (termMatches.length > 0) {
                   matches.push({
                     term: term || (description || pattern),
@@ -196,64 +190,48 @@ jobs:
                   });
                 }
               }
-              
               return matches;
             }
-            
             // Helper function to check if label should be added
             async function processLabel(labelName, config) {
               const body = context.payload.issue.body || "";
               const title = context.payload.issue.title || "";
-              
               core.notice(`Processing label: ${labelName}`);
               core.notice(`Issue Title: "${title}"`);
               core.notice(`Issue Body length: ${body.length} characters`);
-              
               let shouldAddLabel = false;
               let allMatches = [];
               let reason = '';
-              
               const keywords = config.keywords || [];
               const substrings = config.substrings || [];
               const regexPatterns = config.regexPatterns || [];
-              
               core.notice(`Searching with ${keywords.length} keywords, ${substrings.length} substrings, and ${regexPatterns.length} regex patterns`);
-              
               // Search in title
               if (title.trim()) {
                 core.notice(`Searching in title: "${title}"`);
-                
                 const titleKeywordMatches = findMatchingTermsWithLines(title, keywords, 'keyword', 'title');
                 const titleSubstringMatches = findMatchingTermsWithLines(title, substrings, 'substring', 'title');
                 const titleRegexMatches = findMatchingTermsWithLines(title, regexPatterns, 'regex', 'title');
-                
                 allMatches.push(...titleKeywordMatches, ...titleSubstringMatches, ...titleRegexMatches);
               }
-              
               // Search in body
               if (body.trim()) {
                 core.notice(`Searching in body (${body.length} characters)`);
-                
                 const bodyKeywordMatches = findMatchingTermsWithLines(body, keywords, 'keyword', 'body');
                 const bodySubstringMatches = findMatchingTermsWithLines(body, substrings, 'substring', 'body');
                 const bodyRegexMatches = findMatchingTermsWithLines(body, regexPatterns, 'regex', 'body');
-                
                 allMatches.push(...bodyKeywordMatches, ...bodySubstringMatches, ...bodyRegexMatches);
               }
-              
               if (allMatches.length > 0) {
                 core.notice(`Found ${allMatches.length} matching term(s):`);
-                
                 for (const termMatch of allMatches) {
                   const locationText = termMatch.searchLocation === 'title' ? 'title' : 'body';
                   const searchInText = termMatch.searchIn === 'both' ? 'both' : termMatch.searchIn;
-                  
                   if (termMatch.searchType === 'regex') {
                     core.notice(`  📍 Regex: "${termMatch.term}" (pattern: ${termMatch.pattern}) found ${termMatch.count} time(s) in ${locationText} (configured to search in: ${searchInText}):`);
                   } else {
                     core.notice(`  📍 Term: "${termMatch.term}" (${termMatch.searchType} search) found ${termMatch.count} time(s) in ${locationText} (configured to search in: ${searchInText}):`);
                   }
-                  
                   // Show details for each match
                   termMatch.matches.forEach((match, index) => {
                     core.notice(`    ${index + 1}. Line ${match.lineNumber} in ${match.searchLocation}: "${match.match}" [${match.searchType}]`);
@@ -266,7 +244,6 @@ jobs:
                     }
                   });
                 }
-                
                 shouldAddLabel = true;
                 const totalMatches = allMatches.reduce((sum, t) => sum + t.count, 0);
                 const titleMatches = allMatches.filter(t => t.searchLocation === 'title').reduce((sum, t) => sum + t.count, 0);
@@ -274,13 +251,10 @@ jobs:
                 const keywordMatches = allMatches.filter(t => t.searchType === 'keyword').reduce((sum, t) => sum + t.count, 0);
                 const substringMatches = allMatches.filter(t => t.searchType === 'substring').reduce((sum, t) => sum + t.count, 0);
                 const regexMatches = allMatches.filter(t => t.searchType === 'regex').reduce((sum, t) => sum + t.count, 0);
-                
                 reason = `Found ${totalMatches} total matches (${titleMatches} in title, ${bodyMatches} in body) - ${keywordMatches} keyword matches, ${substringMatches} substring matches, ${regexMatches} regex matches`;
               }
-              
               core.notice(`Final decision: ${shouldAddLabel ? 'ADD LABEL' : 'DO NOT ADD LABEL'}`);
               core.notice(`Reason: ${reason || 'No matching terms found'}`);
-              
               if (shouldAddLabel) {
                 const existingLabels = context.payload.issue.labels.map(l => l.name);
                 if (!existingLabels.includes(labelName)) {
@@ -296,14 +270,92 @@ jobs:
                 core.notice(`Label "${labelName}" already present.`);
                 return false;
               }
-              
               core.notice(`No matching terms found for label "${labelName}".`);
               return false;
             }
-            
             // Process all configured labels
-            const processLabels = Object.entries(labelConfig)
+            const labelsAddedResults = await Promise.all(
-              .map(([labelName, config]) => processLabel(labelName, config));
+              Object.entries(labelConfig).map(([labelName, config]) => 
-            const labelsAdded = await Promise.all(processLabels);
+                processLabel(labelName, config).then(added => ({ labelName, added }))
-            const numLabelsAdded = labelsAdded.reduce((x, y) => x + y, 0);
+              )
-            core.notice(`Processing complete. ${numLabelsAdded} label(s) added.`);
+            );
+            
+            const numLabelsAdded = labelsAddedResults.filter(r => r.added).length;
+            core.notice(`Processing complete. ${numLabelsAdded} label(s) added.`);
+            
+            // Return which labels were added for the next step
+            const addedLabels = labelsAddedResults.filter(r => r.added).map(r => r.labelName);
+            core.setOutput('labels_added', JSON.stringify(addedLabels));
+            return addedLabels;
+
+      - name: CC users for labeled issues
+        if: steps.label-step.outputs.labels_added != '[]'
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd  # v8.0.0
+        with:
+          script: |
+            // Configuration: Map labels to GitHub users to CC
+            // You can add multiple users per label, and multiple label configurations
+            const ccConfig = {
+              rocm: {
+                users: ['hongxiayang', 'tjtanaa', 'vllmellm'],  // Add more users as needed: ['user1', 'user2', 'user3']
+                message: 'CC {users} for ROCm-related issue'  // {users} will be replaced with @mentions
+              },
+              // Add more label -> user mappings here
+              // Example:
+              // cuda: {
+              //   users: ['user1', 'user2'],
+              //   message: 'CC {users} for CUDA-related issue'
+              // },
+              // performance: {
+              //   users: ['perfexpert'],
+              //   message: 'CC {users} for performance issue'
+              // },
+            };
+            
+            const labelsAdded = JSON.parse('${{ steps.label-step.outputs.labels_added }}');
+            core.notice(`Labels added: ${labelsAdded.join(', ')}`);
+            
+            // Get existing comments to check for already mentioned users
+            const comments = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            });
+            
+            const issueBody = context.payload.issue.body || '';
+            const allExistingText = issueBody + '\n' + comments.data.map(c => c.body).join('\n');
+            
+            // Process each label that was added
+            for (const label of labelsAdded) {
+              if (ccConfig[label]) {
+                const config = ccConfig[label];
+                const usersToMention = [];
+                
+                // Check which users haven't been mentioned yet
+                for (const user of config.users) {
+                  const mentionPattern = new RegExp(`@${user}\\b`, 'i');
+                  if (!mentionPattern.test(allExistingText)) {
+                    usersToMention.push(user);
+                  } else {
+                    core.notice(`@${user} already mentioned for label "${label}", skipping`);
+                  }
+                }
+                
+                // Post comment if there are users to mention
+                if (usersToMention.length > 0) {
+                  const mentions = usersToMention.map(u => `@${u}`).join(' ');
+                  const message = config.message.replace('{users}', mentions);
+                  
+                  await github.rest.issues.createComment({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number: context.issue.number,
+                    body: message
+                  });
+                  
+                  core.notice(`CC comment added for label "${label}": ${mentions}`);
+                } else {
+                  core.notice(`All users for label "${label}" already mentioned, skipping comment`);
+                }
+              }
+            }

.gitignore

@@ -94,6 +94,9 @@ ipython_config.py
 # generated files
 **/generated/**
 
+# uv
+uv.lock
+
 # pyenv
 #   For a library or package, you might want to ignore these files since the code is
 #   intended to run in multiple environments; otherwise, check them in:

.markdownlint.yaml

@@ -4,7 +4,6 @@ MD013: false
 MD024:
   siblings_only: true
 MD033: false
-MD042: false
 MD045: false
 MD046: false
 MD051: false

.pre-commit-config.yaml

@@ -7,17 +7,18 @@ default_stages:
 exclude: 'vllm/third_party/.*'
 repos:
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.13.3
+  rev: v0.14.0
   hooks:
   - id: ruff-check
     args: [--output-format, github, --fix]
   - id: ruff-format
 - repo: https://github.com/crate-ci/typos
-  rev: v1.35.5
+  rev: v1.38.1
   hooks:
   - id: typos
+    args: [--force-exclude]
 - repo: https://github.com/pre-commit/mirrors-clang-format
-  rev: v20.1.3
+  rev: v21.1.2
   hooks:
   - id: clang-format
     exclude: 'csrc/(moe/topk_softmax_kernels.cu|quantization/gguf/(ggml-common.h|dequantize.cuh|vecdotq.cuh|mmq.cuh|mmvq.cuh))|vllm/third_party/.*'
@@ -34,32 +35,27 @@ repos:
   hooks:
   - id: actionlint
 - repo: https://github.com/astral-sh/uv-pre-commit
-  rev: 0.6.17
+  rev: 0.9.1
   hooks:
     - id: pip-compile
-      args: [requirements/test.in, -o, requirements/test.txt, --index-strategy, unsafe-best-match, --torch-backend, cu128, --python-platform, x86_64-manylinux_2_28]
+      args: [requirements/test.in, -o, requirements/test.txt, --index-strategy, unsafe-best-match, --torch-backend, cu129, --python-platform, x86_64-manylinux_2_28]
       files: ^requirements/test\.(in|txt)$
 - repo: local
   hooks:
   - id: format-torch-nightly-test
     name: reformat nightly_torch_test.txt to be in sync with test.in
     language: python
-    entry: python tools/generate_nightly_torch_test.py
+    entry: python tools/pre_commit/generate_nightly_torch_test.py
     files: ^requirements/test\.(in|txt)$
   - id: mypy-local
-    name: Run mypy for local Python installation
+    name: Run mypy locally for lowest supported Python version
-    entry: python tools/pre_commit/mypy.py 0 "local"
+    entry: python tools/pre_commit/mypy.py 0 "3.10"
     stages: [pre-commit] # Don't run in CI
     <<: &mypy_common
       language: python
       types_or: [python, pyi]
       require_serial: true
       additional_dependencies: [mypy==1.11.1, regex, types-cachetools, types-setuptools, types-PyYAML, types-requests, types-torch, pydantic]
-  - id: mypy-3.9 # TODO: Use https://github.com/pre-commit/mirrors-mypy when mypy setup is less awkward
-    name: Run mypy for Python 3.9
-    entry: python tools/pre_commit/mypy.py 1 "3.9"
-    <<: *mypy_common
-    stages: [manual] # Only run in CI
   - id: mypy-3.10 # TODO: Use https://github.com/pre-commit/mirrors-mypy when mypy setup is less awkward
     name: Run mypy for Python 3.10
     entry: python tools/pre_commit/mypy.py 1 "3.10"
@@ -75,14 +71,19 @@ repos:
     entry: python tools/pre_commit/mypy.py 1 "3.12"
     <<: *mypy_common
     stages: [manual] # Only run in CI
+  - id: mypy-3.13 # TODO: Use https://github.com/pre-commit/mirrors-mypy when mypy setup is less awkward
+    name: Run mypy for Python 3.13
+    entry: python tools/pre_commit/mypy.py 1 "3.13"
+    <<: *mypy_common
+    stages: [manual] # Only run in CI
   - id: shellcheck
     name: Lint shell scripts
-    entry: tools/shellcheck.sh
+    entry: tools/pre_commit/shellcheck.sh
     language: script
     types: [shell]
   - id: png-lint
     name: Lint PNG exports from excalidraw
-    entry: tools/png-lint.sh
+    entry: tools/pre_commit/png-lint.sh
     language: script
     types: [png]
   - id: signoff-commit
@@ -99,12 +100,12 @@ repos:
     stages: [commit-msg]
   - id: check-spdx-header
     name: Check SPDX headers
-    entry: python tools/check_spdx_header.py
+    entry: python tools/pre_commit/check_spdx_header.py
     language: python
     types: [python]
   - id: check-root-lazy-imports
     name: Check root lazy imports
-    entry: python tools/check_init_lazy_imports.py
+    entry: python tools/pre_commit/check_init_lazy_imports.py
     language: python
     types: [python]
   - id: check-filenames
@@ -118,11 +119,11 @@ repos:
     pass_filenames: false
   - id: update-dockerfile-graph
     name: Update Dockerfile dependency graph
-    entry: tools/update-dockerfile-graph.sh
+    entry: tools/pre_commit/update-dockerfile-graph.sh
     language: script
   - id: enforce-import-regex-instead-of-re
     name: Enforce import regex as re
-    entry: python tools/enforce_regex_import.py
+    entry: python tools/pre_commit/enforce_regex_import.py
     language: python
     types: [python]
     pass_filenames: false
@@ -130,7 +131,7 @@ repos:
   # forbid directly import triton
   - id: forbid-direct-triton-import
     name: "Forbid direct 'import triton'"
-    entry: python tools/check_triton_import.py
+    entry: python tools/pre_commit/check_triton_import.py
     language: python
     types: [python]
     pass_filenames: false
@@ -143,7 +144,7 @@ repos:
     additional_dependencies: [regex]
   - id: validate-config
     name: Validate configuration has default values and that each field has a docstring
-    entry: python tools/validate_config.py
+    entry: python tools/pre_commit/validate_config.py
     language: python
     additional_dependencies: [regex]
   # Keep `suggestion` last

CMakeLists.txt

@@ -34,7 +34,7 @@ install(CODE "set(CMAKE_INSTALL_LOCAL_ONLY TRUE)" ALL_COMPONENTS)
 # Supported python versions.  These versions will be searched in order, the
 # first match will be selected.  These should be kept in sync with setup.py.
 #
-set(PYTHON_SUPPORTED_VERSIONS "3.9" "3.10" "3.11" "3.12" "3.13")
+set(PYTHON_SUPPORTED_VERSIONS "3.10" "3.11" "3.12" "3.13")
 
 # Supported AMD GPU architectures.
 set(HIP_SUPPORTED_ARCHS "gfx906;gfx908;gfx90a;gfx942;gfx950;gfx1030;gfx1100;gfx1101;gfx1200;gfx1201;gfx1150;gfx1151")
@@ -49,8 +49,8 @@ set(HIP_SUPPORTED_ARCHS "gfx906;gfx908;gfx90a;gfx942;gfx950;gfx1030;gfx1100;gfx1
 # requirements.txt files and should be kept consistent.  The ROCm torch
 # versions are derived from docker/Dockerfile.rocm
 #
-set(TORCH_SUPPORTED_VERSION_CUDA "2.8.0")
+set(TORCH_SUPPORTED_VERSION_CUDA "2.9.0")
-set(TORCH_SUPPORTED_VERSION_ROCM "2.8.0")
+set(TORCH_SUPPORTED_VERSION_ROCM "2.9.0")
 
 #
 # Try to find python package with an executable that exactly matches
@@ -269,8 +269,8 @@ set(VLLM_EXT_SRC
   "csrc/sampler.cu"
   "csrc/cuda_view.cu"
   "csrc/quantization/gptq/q_gemm.cu"
-  "csrc/quantization/compressed_tensors/int8_quant_kernels.cu"
+  "csrc/quantization/w8a8/int8/scaled_quant.cu"
-  "csrc/quantization/fp8/common.cu"
+  "csrc/quantization/w8a8/fp8/common.cu"
   "csrc/quantization/fused_kernels/fused_layernorm_dynamic_per_token_quant.cu"
   "csrc/quantization/gguf/gguf_kernel.cu"
   "csrc/quantization/activation_kernels.cu"
@@ -314,12 +314,13 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   list(APPEND VLLM_EXT_SRC
     "csrc/quantization/awq/gemm_kernels.cu"
     "csrc/permute_cols.cu"
-    "csrc/quantization/cutlass_w8a8/scaled_mm_entry.cu"
+    "csrc/quantization/w8a8/cutlass/scaled_mm_entry.cu"
     "csrc/quantization/fp4/nvfp4_quant_entry.cu"
     "csrc/quantization/fp4/nvfp4_scaled_mm_entry.cu"
     "csrc/sparse/cutlass/sparse_scaled_mm_entry.cu"
     "csrc/cutlass_extensions/common.cpp"
-    "csrc/quantization/fp8/per_token_group_quant.cu")
+    "csrc/quantization/w8a8/fp8/per_token_group_quant.cu"
+    "csrc/quantization/w8a8/int8/per_token_group_quant.cu")
 
   set_gencode_flags_for_srcs(
     SRCS "${VLLM_EXT_SRC}"
@@ -423,11 +424,11 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   cuda_archs_loose_intersection(SCALED_MM_ARCHS "9.0a;" "${CUDA_ARCHS}")
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.0 AND SCALED_MM_ARCHS)
     set(SRCS
-       "csrc/quantization/cutlass_w8a8/scaled_mm_c3x_sm90.cu"
+       "csrc/quantization/w8a8/cutlass/scaled_mm_c3x_sm90.cu"
-       "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_sm90_fp8.cu"
+       "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm90_fp8.cu"
-       "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_sm90_int8.cu"
+       "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm90_int8.cu"
-       "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_azp_sm90_int8.cu"
+       "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_azp_sm90_int8.cu"
-       "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_blockwise_sm90_fp8.cu")
+       "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_blockwise_sm90_fp8.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${SCALED_MM_ARCHS}")
@@ -458,9 +459,9 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   endif()
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND SCALED_MM_ARCHS)
     set(SRCS
-      "csrc/quantization/cutlass_w8a8/scaled_mm_c3x_sm120.cu"
+      "csrc/quantization/w8a8/cutlass/scaled_mm_c3x_sm120.cu"
-      "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_sm120_fp8.cu"
+      "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm120_fp8.cu"
-      "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_blockwise_sm120_fp8.cu"
+      "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_blockwise_sm120_fp8.cu"
     )
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
@@ -492,9 +493,9 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   endif()
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND SCALED_MM_ARCHS)
     set(SRCS
-      "csrc/quantization/cutlass_w8a8/scaled_mm_c3x_sm100.cu"
+      "csrc/quantization/w8a8/cutlass/scaled_mm_c3x_sm100.cu"
-      "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_sm100_fp8.cu"
+      "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_sm100_fp8.cu"
-      "csrc/quantization/cutlass_w8a8/c3x/scaled_mm_blockwise_sm100_fp8.cu"
+      "csrc/quantization/w8a8/cutlass/c3x/scaled_mm_blockwise_sm100_fp8.cu"
     )
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
@@ -525,7 +526,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   # subtract out the archs that are already built for 3x
   list(REMOVE_ITEM SCALED_MM_2X_ARCHS ${SCALED_MM_3X_ARCHS})
   if (SCALED_MM_2X_ARCHS)
-    set(SRCS "csrc/quantization/cutlass_w8a8/scaled_mm_c2x.cu")
+    set(SRCS "csrc/quantization/w8a8/cutlass/scaled_mm_c2x.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${SCALED_MM_2X_ARCHS}")
@@ -648,7 +649,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   # if it's possible to compile MoE kernels that use its output.
   cuda_archs_loose_intersection(SCALED_MM_ARCHS "9.0a" "${CUDA_ARCHS}")
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.3 AND SCALED_MM_ARCHS)
-    set(SRCS "csrc/quantization/cutlass_w8a8/moe/grouped_mm_c3x_sm90.cu")
+    set(SRCS "csrc/quantization/w8a8/cutlass/moe/grouped_mm_c3x_sm90.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${SCALED_MM_ARCHS}")
@@ -672,7 +673,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
     cuda_archs_loose_intersection(SCALED_MM_ARCHS "10.0a" "${CUDA_ARCHS}")
   endif()
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND SCALED_MM_ARCHS)
-    set(SRCS "csrc/quantization/cutlass_w8a8/moe/grouped_mm_c3x_sm100.cu")
+    set(SRCS "csrc/quantization/w8a8/cutlass/moe/grouped_mm_c3x_sm100.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${SCALED_MM_ARCHS}")
@@ -697,7 +698,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
     cuda_archs_loose_intersection(CUTLASS_MOE_DATA_ARCHS "9.0a;10.0a;10.1a;10.3a;12.0a;12.1a" "${CUDA_ARCHS}")
   endif()
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.3 AND CUTLASS_MOE_DATA_ARCHS)
-    set(SRCS "csrc/quantization/cutlass_w8a8/moe/moe_data.cu")
+    set(SRCS "csrc/quantization/w8a8/cutlass/moe/moe_data.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${CUTLASS_MOE_DATA_ARCHS}")
@@ -720,7 +721,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
     cuda_archs_loose_intersection(SCALED_MM_ARCHS "10.0a;10.1a;10.3a;12.0a;12.1a" "${CUDA_ARCHS}")
   endif()
   if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.8 AND SCALED_MM_ARCHS)
-    set(SRCS "csrc/quantization/cutlass_w8a8/moe/blockwise_scaled_group_mm_sm100.cu")
+    set(SRCS "csrc/quantization/w8a8/cutlass/moe/blockwise_scaled_group_mm_sm100.cu")
     set_gencode_flags_for_srcs(
       SRCS "${SRCS}"
       CUDA_ARCHS "${SCALED_MM_ARCHS}")
@@ -882,6 +883,7 @@ target_compile_definitions(_C PRIVATE CUTLASS_ENABLE_DIRECT_CUDA_DRIVER_CALL=1)
 set(VLLM_MOE_EXT_SRC
   "csrc/moe/torch_bindings.cpp"
   "csrc/moe/moe_align_sum_kernels.cu"
+  "csrc/moe/moe_lora_align_sum_kernels.cu"
   "csrc/moe/topk_softmax_kernels.cu")
 
 if(VLLM_GPU_LANG STREQUAL "CUDA")
@@ -1006,6 +1008,7 @@ endif()
 # For CUDA we also build and ship some external projects.
 if (VLLM_GPU_LANG STREQUAL "CUDA")
     include(cmake/external_projects/flashmla.cmake)
+    include(cmake/external_projects/qutlass.cmake)
 
     # vllm-flash-attn should be last as it overwrites some CMake functions
     include(cmake/external_projects/vllm_flash_attn.cmake)

README.md

@@ -149,6 +149,7 @@ Compute Resources:
 - Trainy
 - UC Berkeley
 - UC San Diego
+- Volcengine
 
 Slack Sponsor: Anyscale
 

benchmarks/auto_tune/auto_tune.sh

@@ -74,7 +74,7 @@ start_server() {
     local vllm_log=$4
     local profile_dir=$5
 
-    pkill -if vllm
+    pkill -if "vllm serve" || true
 
     # Define the common arguments as a bash array.
     # Each argument and its value are separate elements.
@@ -96,11 +96,11 @@ start_server() {
     # This correctly passes each element as a separate argument.
     if [[ -n "$profile_dir" ]]; then
         # Start server with profiling enabled
-        VLLM_USE_V1=1 VLLM_SERVER_DEV_MODE=1 VLLM_TORCH_PROFILER_DIR=$profile_dir \
+        VLLM_SERVER_DEV_MODE=1 VLLM_TORCH_PROFILER_DIR=$profile_dir \
             vllm serve "${common_args_array[@]}" > "$vllm_log" 2>&1 &
     else
         # Start server without profiling
-        VLLM_USE_V1=1 VLLM_SERVER_DEV_MODE=1 \
+        VLLM_SERVER_DEV_MODE=1 \
             vllm serve "${common_args_array[@]}" > "$vllm_log" 2>&1 &
     fi
     local server_pid=$!
@@ -139,7 +139,7 @@ run_benchmark() {
     echo "vllm_log: $vllm_log"
     echo
     rm -f $vllm_log
-    pkill -if vllm
+    pkill -if "vllm serve" || true
 
     echo "starting server..."
     # Call start_server without a profile_dir to avoid profiling overhead
@@ -232,7 +232,7 @@ run_benchmark() {
 
     echo "best_max_num_seqs: $best_max_num_seqs, best_num_batched_tokens: $best_num_batched_tokens, best_throughput: $best_throughput"
 
-    pkill -if vllm
+    pkill -if "vllm serve" || true
     sleep 10
     echo "===================="
     return 0
@@ -308,6 +308,6 @@ if (( $(echo "$best_throughput > 0" | bc -l) )); then
 else
     echo "No configuration met the latency requirements. Skipping final profiling run."
 fi
-pkill -if vllm
+pkill -if "vllm serve" || true
 echo "best_max_num_seqs: $best_max_num_seqs, best_num_batched_tokens: $best_num_batched_tokens, best_throughput: $best_throughput, profile saved in: $PROFILE_PATH"
 echo "best_max_num_seqs: $best_max_num_seqs, best_num_batched_tokens: $best_num_batched_tokens, best_throughput: $best_throughput, profile saved in: $PROFILE_PATH" >> "$RESULT"

benchmarks/backend_request_func.py

@@ -8,7 +8,6 @@ import sys
 import time
 import traceback
 from dataclasses import dataclass, field
-from typing import Optional, Union
 
 import aiohttp
 import huggingface_hub.constants
@@ -28,13 +27,13 @@ class RequestFuncInput:
     prompt_len: int
     output_len: int
     model: str
-    model_name: Optional[str] = None
+    model_name: str | None = None
-    logprobs: Optional[int] = None
+    logprobs: int | None = None
-    extra_body: Optional[dict] = None
+    extra_body: dict | None = None
-    multi_modal_content: Optional[dict | list[dict]] = None
+    multi_modal_content: dict | list[dict] | None = None
     ignore_eos: bool = False
-    language: Optional[str] = None
+    language: str | None = None
-    request_id: Optional[str] = None
+    request_id: str | None = None
 
 
 @dataclass
@@ -52,7 +51,7 @@ class RequestFuncOutput:
 
 async def async_request_tgi(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith("generate_stream")
@@ -133,7 +132,7 @@ async def async_request_tgi(
 
 async def async_request_trt_llm(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith("generate_stream")
@@ -204,7 +203,7 @@ async def async_request_trt_llm(
 
 async def async_request_deepspeed_mii(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith(("completions", "profile")), (
@@ -267,7 +266,7 @@ async def async_request_deepspeed_mii(
 
 async def async_request_openai_completions(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith(("completions", "profile")), (
@@ -367,7 +366,7 @@ async def async_request_openai_completions(
 
 async def async_request_openai_chat_completions(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     api_url = request_func_input.api_url
     assert api_url.endswith(("chat/completions", "profile")), (
@@ -476,7 +475,7 @@ async def async_request_openai_chat_completions(
 
 async def async_request_openai_audio(
     request_func_input: RequestFuncInput,
-    pbar: Optional[tqdm] = None,
+    pbar: tqdm | None = None,
 ) -> RequestFuncOutput:
     # Lazy import without PlaceholderModule to avoid vllm dep.
     import soundfile
@@ -610,7 +609,7 @@ def get_tokenizer(
     tokenizer_mode: str = "auto",
     trust_remote_code: bool = False,
     **kwargs,
-) -> Union[PreTrainedTokenizer, PreTrainedTokenizerFast]:
+) -> PreTrainedTokenizer | PreTrainedTokenizerFast:
     if pretrained_model_name_or_path is not None and not os.path.exists(
         pretrained_model_name_or_path
     ):

benchmarks/benchmark_block_pool.py

@@ -5,7 +5,7 @@ import gc
 from benchmark_utils import TimeCollector
 from tabulate import tabulate
 
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 from vllm.v1.core.block_pool import BlockPool
 
 

benchmarks/benchmark_long_document_qa_throughput.py

@@ -46,7 +46,7 @@ import time
 
 from vllm import LLM, SamplingParams
 from vllm.engine.arg_utils import EngineArgs
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 
 def test_long_document_qa(llm=None, sampling_params=None, prompts=None):

benchmarks/benchmark_ngram_proposer.py

@@ -19,7 +19,7 @@ from vllm.config import (
     VllmConfig,
 )
 from vllm.platforms import current_platform
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 from vllm.v1.spec_decode.ngram_proposer import NgramProposer
 from vllm.v1.worker.gpu_input_batch import InputBatch
 from vllm.v1.worker.gpu_model_runner import GPUModelRunner

benchmarks/benchmark_prefix_caching.py

@@ -32,13 +32,12 @@ import dataclasses
 import json
 import random
 import time
-from typing import Optional
 
 from transformers import PreTrainedTokenizerBase
 
 from vllm import LLM, SamplingParams
 from vllm.engine.arg_utils import EngineArgs
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 try:
     from vllm.transformers_utils.tokenizer import get_tokenizer
@@ -80,7 +79,7 @@ def sample_requests_from_dataset(
     num_requests: int,
     tokenizer: PreTrainedTokenizerBase,
     input_length_range: tuple[int, int],
-    fixed_output_len: Optional[int],
+    fixed_output_len: int | None,
 ) -> list[Request]:
     if fixed_output_len is not None and fixed_output_len < 4:
         raise ValueError("output_len too small")
@@ -128,7 +127,7 @@ def sample_requests_from_random(
     num_requests: int,
     tokenizer: PreTrainedTokenizerBase,
     input_length_range: tuple[int, int],
-    fixed_output_len: Optional[int],
+    fixed_output_len: int | None,
     prefix_len: int,
 ) -> list[Request]:
     requests = []

benchmarks/benchmark_prioritization.py

@@ -7,12 +7,11 @@ import dataclasses
 import json
 import random
 import time
-from typing import Optional
 
 from transformers import AutoTokenizer, PreTrainedTokenizerBase
 
 from vllm.engine.arg_utils import EngineArgs
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 
 # Select a equi-probable random priority
@@ -24,7 +23,7 @@ def sample_requests(
     dataset_path: str,
     num_requests: int,
     tokenizer: PreTrainedTokenizerBase,
-    fixed_output_len: Optional[int],
+    fixed_output_len: int | None,
 ) -> list[tuple[str, int, int, int]]:
     if fixed_output_len is not None and fixed_output_len < 4:
         raise ValueError("output_len too small")

benchmarks/benchmark_serving_structured_output.py

@@ -31,8 +31,8 @@ import time
 import uuid
 import warnings
 from collections.abc import AsyncGenerator
+from contextlib import nullcontext
 from dataclasses import dataclass
-from typing import Optional
 
 import datasets
 import numpy as np
@@ -51,7 +51,7 @@ except ImportError:
     from backend_request_func import get_tokenizer
 
 try:
-    from vllm.utils import FlexibleArgumentParser
+    from vllm.utils.argparse_utils import FlexibleArgumentParser
 except ImportError:
     from argparse import ArgumentParser as FlexibleArgumentParser
 
@@ -316,7 +316,7 @@ def calculate_metrics(
     tokenizer: PreTrainedTokenizerBase,
     selected_percentile_metrics: list[str],
     selected_percentiles: list[float],
-    goodput_config_dict: Optional[dict[str, float]] = None,
+    goodput_config_dict: dict[str, float] | None = None,
 ) -> tuple[BenchmarkMetrics, list[int]]:
     actual_output_lens: list[int] = []
     total_input = 0
@@ -436,9 +436,9 @@ async def benchmark(
     selected_percentile_metrics: list[str],
     selected_percentiles: list[str],
     ignore_eos: bool,
-    max_concurrency: Optional[int],
+    max_concurrency: int | None,
     structured_output_ratio: float,
-    goodput_config_dict: Optional[dict[str, float]] = None,
+    goodput_config_dict: dict[str, float] | None = None,
 ):
     if backend in ASYNC_REQUEST_FUNCS:
         request_func = ASYNC_REQUEST_FUNCS[backend]
@@ -502,15 +502,9 @@ async def benchmark(
 
     pbar = None if disable_tqdm else tqdm(total=len(input_requests))
 
-    # This can be used once the minimum Python version is 3.10 or higher,
+    semaphore = asyncio.Semaphore(max_concurrency) if max_concurrency else nullcontext()
-    # and it will simplify the code in limited_request_func.
-    #    semaphore = (asyncio.Semaphore(max_concurrency)
-    #                 if max_concurrency else contextlib.nullcontext())
-    semaphore = asyncio.Semaphore(max_concurrency) if max_concurrency else None
 
     async def limited_request_func(request_func_input, pbar):
-        if semaphore is None:
-            return await request_func(request_func_input=request_func_input, pbar=pbar)
         async with semaphore:
             return await request_func(request_func_input=request_func_input, pbar=pbar)
 

benchmarks/benchmark_utils.py

@@ -6,7 +6,7 @@ import math
 import os
 import time
 from types import TracebackType
-from typing import Any, Optional, Union
+from typing import Any
 
 
 def convert_to_pytorch_benchmark_format(
@@ -92,7 +92,7 @@ class TimeCollector:
     def __init__(self, scale: int) -> None:
         self.cnt: int = 0
         self._sum: int = 0
-        self._max: Optional[int] = None
+        self._max: int | None = None
         self.scale = scale
         self.start_time: int = time.monotonic_ns()
 
@@ -104,13 +104,13 @@ class TimeCollector:
         else:
             self._max = max(self._max, v)
 
-    def avg(self) -> Union[float, str]:
+    def avg(self) -> float | str:
         return self._sum * 1.0 / self.cnt / self.scale if self.cnt > 0 else "N/A"
 
-    def max(self) -> Union[float, str]:
+    def max(self) -> float | str:
         return self._max / self.scale if self._max else "N/A"
 
-    def dump_avg_max(self) -> list[Union[float, str]]:
+    def dump_avg_max(self) -> list[float | str]:
         return [self.avg(), self.max()]
 
     def __enter__(self) -> None:
@@ -118,8 +118,8 @@ class TimeCollector:
 
     def __exit__(
         self,
-        exc_type: Optional[type[BaseException]],
+        exc_type: type[BaseException] | None,
-        exc_value: Optional[BaseException],
+        exc_value: BaseException | None,
-        exc_traceback: Optional[TracebackType],
+        exc_traceback: TracebackType | None,
     ) -> None:
         self.collect(time.monotonic_ns() - self.start_time)

benchmarks/cutlass_benchmarks/sparse_benchmarks.py

@@ -6,8 +6,7 @@ import copy
 import itertools
 import pickle as pkl
 import time
-from collections.abc import Iterable
+from collections.abc import Callable, Iterable
-from typing import Callable
 
 import torch
 import torch.utils.benchmark as TBenchmark
@@ -16,7 +15,7 @@ from utils import make_rand_sparse_tensors
 from weight_shapes import WEIGHT_SHAPES
 
 from vllm import _custom_ops as ops
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 DEFAULT_MODELS = list(WEIGHT_SHAPES.keys())
 DEFAULT_BATCH_SIZES = [1, 16, 32, 64, 128, 256, 512]

benchmarks/cutlass_benchmarks/w8a8_benchmarks.py

@@ -6,8 +6,7 @@ import copy
 import itertools
 import pickle as pkl
 import time
-from collections.abc import Iterable
+from collections.abc import Callable, Iterable
-from typing import Callable, Optional
 
 import torch
 import torch.utils.benchmark as TBenchmark
@@ -19,7 +18,8 @@ from vllm import _custom_ops as ops
 from vllm.model_executor.layers.quantization.utils.fp8_utils import (
     w8a8_triton_block_scaled_mm,
 )
-from vllm.utils import FlexibleArgumentParser, cdiv
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.math_utils import cdiv
 
 DEFAULT_MODELS = list(WEIGHT_SHAPES.keys())
 DEFAULT_BATCH_SIZES = [1, 16, 32, 64, 128, 256, 512]
@@ -53,7 +53,7 @@ def bench_int8(
     n: int,
     label: str,
     sub_label: str,
-    bench_kernels: Optional[list[str]] = None,
+    bench_kernels: list[str] | None = None,
 ) -> Iterable[TMeasurement]:
     """Benchmark INT8-based kernels."""
     assert dtype == torch.int8
@@ -108,7 +108,7 @@ def bench_fp8(
     n: int,
     label: str,
     sub_label: str,
-    bench_kernels: Optional[list[str]] = None,
+    bench_kernels: list[str] | None = None,
 ) -> Iterable[TMeasurement]:
     """Benchmark FP8-based kernels."""
     assert dtype == torch.float8_e4m3fn
@@ -183,7 +183,7 @@ def bench(
     n: int,
     label: str,
     sub_label: str,
-    bench_kernels: Optional[list[str]] = None,
+    bench_kernels: list[str] | None = None,
 ) -> Iterable[TMeasurement]:
     if dtype == torch.int8:
         return bench_int8(dtype, m, k, n, label, sub_label, bench_kernels)
@@ -201,7 +201,7 @@ def print_timers(timers: Iterable[TMeasurement]):
 def run(
     dtype: torch.dtype,
     MKNs: Iterable[tuple[int, int, int]],
-    bench_kernels: Optional[list[str]] = None,
+    bench_kernels: list[str] | None = None,
 ) -> Iterable[TMeasurement]:
     results = []
     for m, k, n in MKNs:

benchmarks/fused_kernels/layernorm_rms_benchmarks.py

@@ -3,10 +3,9 @@
 
 import pickle as pkl
 import time
-from collections.abc import Iterable
+from collections.abc import Callable, Iterable
 from dataclasses import dataclass
 from itertools import product
-from typing import Callable, Optional
 
 import torch
 import torch.utils.benchmark as TBenchmark
@@ -51,7 +50,7 @@ def get_bench_params() -> list[bench_params_t]:
 def unfused_int8_impl(
     rms_norm_layer: RMSNorm,
     x: torch.Tensor,
-    residual: Optional[torch.Tensor],
+    residual: torch.Tensor | None,
     quant_dtype: torch.dtype,
 ):
     # Norm
@@ -68,7 +67,7 @@ def unfused_int8_impl(
 def unfused_fp8_impl(
     rms_norm_layer: RMSNorm,
     x: torch.Tensor,
-    residual: Optional[torch.Tensor],
+    residual: torch.Tensor | None,
     quant_dtype: torch.dtype,
 ):
     # Norm
@@ -85,7 +84,7 @@ def unfused_fp8_impl(
 def fused_impl(
     rms_norm_layer: RMSNorm,  # this stores the weights
     x: torch.Tensor,
-    residual: Optional[torch.Tensor],
+    residual: torch.Tensor | None,
     quant_dtype: torch.dtype,
 ):
     out, _ = ops.rms_norm_dynamic_per_token_quant(

benchmarks/kernels/bench_mxfp4_qutlass.py

@@ -0,0 +1,191 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+#
+# Copyright (C) 2025 Roberto L. Castro (Roberto.LopezCastro@ist.ac.at).
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import argparse
+import copy
+import itertools
+
+import torch
+from compressed_tensors.transform.utils.hadamard import deterministic_hadamard_matrix
+from weight_shapes import WEIGHT_SHAPES
+
+from vllm._custom_ops import fusedQuantizeMx, matmul_mxf4_bf16_tn
+from vllm.model_executor.layers.quantization.qutlass_utils import to_blocked
+from vllm.triton_utils import triton
+
+PROVIDER_CFGS = {
+    "torch-bf16": dict(enabled=True),
+    "mxfp4": dict(no_a_quant=False, enabled=True),
+    "mxfp4-noquant": dict(no_a_quant=True, enabled=True),
+}
+
+_enabled = [k for k, v in PROVIDER_CFGS.items() if v["enabled"]]
+
+
+def get_hadamard_matrix(group_size: int, dtype: torch.dtype, device: torch.device):
+    return (
+        deterministic_hadamard_matrix(group_size, dtype=dtype, device=device)
+        * group_size**-0.5
+    )
+
+
+def _quant_weight_mxfp4(
+    b: torch.Tensor, forward_hadamard_matrix: torch.Tensor, device: str
+):
+    weight_hf_e2m1, weight_hf_e8m0 = fusedQuantizeMx(
+        b, forward_hadamard_matrix, method="abs_max"
+    )
+    weight_hf_scale_block = to_blocked(weight_hf_e8m0, backend="triton")
+    return weight_hf_e2m1, weight_hf_scale_block
+
+
+def build_mxfp4_runner(cfg, a, b, forward_hadamard_matrix, dtype, device):
+    weight_hf_e2m1, weight_hf_scale_block = _quant_weight_mxfp4(
+        b, forward_hadamard_matrix, device
+    )
+    alpha = torch.tensor([1.0], device="cuda")
+
+    if cfg["no_a_quant"]:
+        # Pre-quantize activation
+        input_hf_e2m1, input_hf_e8m0 = fusedQuantizeMx(
+            a, forward_hadamard_matrix, method="abs_max"
+        )
+        input_hf_scale_block = to_blocked(input_hf_e8m0, backend="triton")
+
+        def run():
+            return matmul_mxf4_bf16_tn(
+                input_hf_e2m1,
+                weight_hf_e2m1,
+                input_hf_scale_block,
+                weight_hf_scale_block,
+                alpha,
+            )
+
+        return run
+
+    # Quantize activation on-the-fly
+    def run():
+        input_hf_e2m1, input_hf_e8m0 = fusedQuantizeMx(
+            a, forward_hadamard_matrix, method="abs_max"
+        )
+        input_hf_scale_block = to_blocked(input_hf_e8m0, backend="triton")
+        return matmul_mxf4_bf16_tn(
+            input_hf_e2m1,
+            weight_hf_e2m1,
+            input_hf_scale_block,
+            weight_hf_scale_block,
+            alpha,
+        )
+
+    return run
+
+
+@triton.testing.perf_report(
+    triton.testing.Benchmark(
+        x_names=["batch_size"],
+        x_vals=[
+            1,
+            4,
+            8,
+            16,
+            32,
+            64,
+            128,
+            256,
+            512,
+            1024,
+            2048,
+            4096,
+            8192,
+            16384,
+            24576,
+            32768,
+        ],
+        x_log=False,
+        line_arg="provider",
+        line_vals=_enabled,
+        line_names=_enabled,
+        ylabel="TFLOP/s (larger is better)",
+        plot_name="BF16 vs MXFP4 GEMMs",
+        args={},
+    )
+)
+def benchmark(batch_size, provider, N, K, had_size):
+    M = batch_size
+    device = "cuda"
+    dtype = torch.bfloat16
+
+    a = torch.randn((M, K), device=device, dtype=dtype)
+    b = torch.randn((N, K), device=device, dtype=dtype)
+    forward_hadamard_matrix = get_hadamard_matrix(had_size, dtype, device)
+
+    quantiles = [0.5, 0.2, 0.8]
+
+    if provider == "torch-bf16":
+        ms, min_ms, max_ms = triton.testing.do_bench_cudagraph(
+            lambda: torch.nn.functional.linear(a, b), rep=200, quantiles=quantiles
+        )
+    else:
+        cfg = PROVIDER_CFGS[provider]
+        run_quant = build_mxfp4_runner(
+            cfg, a, b, forward_hadamard_matrix, dtype, device
+        )
+        ms, min_ms, max_ms = triton.testing.do_bench_cudagraph(
+            lambda: run_quant(), rep=200, quantiles=quantiles
+        )
+
+    to_tflops = lambda t_ms: (2 * M * N * K) * 1e-12 / (t_ms * 1e-3)
+    return to_tflops(ms), to_tflops(max_ms), to_tflops(min_ms)
+
+
+def prepare_shapes(args):
+    out = []
+    for model, tp_size in itertools.product(args.models, args.tp_sizes):
+        for KN, tp_dim in copy.deepcopy(WEIGHT_SHAPES[model]):
+            KN[tp_dim] //= tp_size
+            KN.append(model)
+            out.append(KN)
+    return out
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--models",
+        nargs="+",
+        type=str,
+        default=["meta-llama/Llama-3.3-70B-Instruct"],
+        choices=list(WEIGHT_SHAPES.keys()),
+    )
+    parser.add_argument("--tp-sizes", nargs="+", type=int, default=[1])
+    args = parser.parse_args()
+
+    for K, N, model in prepare_shapes(args):
+        for had_size in [32, 64, 128]:
+            print(f"{model}, N={N} K={K}, HAD={had_size}, BF16 vs MXFP4 GEMMs TFLOP/s:")
+            benchmark.run(
+                print_data=True,
+                show_plots=True,
+                save_path=f"bench_mxfp4_res_n{N}_k{K}",
+                N=N,
+                K=K,
+                had_size=had_size,
+            )
+
+    print("Benchmark finished!")

benchmarks/kernels/bench_nvfp4_qutlass.py

@@ -0,0 +1,207 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+#
+# Copyright (C) 2025 Roberto L. Castro (Roberto.LopezCastro@ist.ac.at).
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import argparse
+import copy
+import itertools
+
+import torch
+from compressed_tensors.transform.utils.hadamard import deterministic_hadamard_matrix
+from weight_shapes import WEIGHT_SHAPES
+
+from vllm import _custom_ops as ops  # use existing nvfp4 gemm in vllm
+from vllm._custom_ops import fusedQuantizeNv
+from vllm.model_executor.layers.quantization.qutlass_utils import to_blocked
+from vllm.triton_utils import triton
+
+PROVIDER_CFGS = {
+    "torch-bf16": dict(enabled=True),
+    "nvfp4": dict(no_a_quant=False, enabled=True),
+    "nvfp4-noquant": dict(no_a_quant=True, enabled=True),
+}
+
+_enabled = [k for k, v in PROVIDER_CFGS.items() if v["enabled"]]
+
+
+def get_hadamard_matrix(group_size: int, dtype: torch.dtype, device: torch.device):
+    return (
+        deterministic_hadamard_matrix(group_size, dtype=dtype, device=device)
+        * group_size**-0.5
+    )
+
+
+def _quant_weight_nvfp4(
+    b: torch.Tensor,
+    forward_hadamard_matrix: torch.Tensor,
+    global_scale: torch.Tensor,
+    device: str,
+    M: int,
+    N: int,
+    K: int,
+):
+    weight_hf_e2m1, weight_hf_e8m0 = fusedQuantizeNv(
+        b, forward_hadamard_matrix, global_scale
+    )
+    weight_hf_scale_block = to_blocked(weight_hf_e8m0, backend="triton").view(
+        -1, K // 16
+    )
+    return weight_hf_e2m1, weight_hf_scale_block
+
+
+def build_nvfp4_runner(cfg, a, b, forward_hadamard_matrix, dtype, device, M, N, K):
+    alpha = torch.tensor([1.0], device="cuda")
+    global_scale = torch.tensor([1.0], device="cuda")
+    weight_hf_e2m1, weight_hf_scale_block = _quant_weight_nvfp4(
+        b, forward_hadamard_matrix, global_scale, device, M, N, K
+    )
+
+    if cfg["no_a_quant"]:
+        # Pre-quantize activation
+        input_hf_e2m1, input_hf_e8m0 = fusedQuantizeNv(
+            a, forward_hadamard_matrix, global_scale
+        )
+        input_hf_scale_block = to_blocked(input_hf_e8m0, backend="triton").view(
+            -1, K // 16
+        )
+
+        def run():
+            return ops.cutlass_scaled_fp4_mm(
+                input_hf_e2m1,
+                weight_hf_e2m1,
+                input_hf_scale_block,
+                weight_hf_scale_block,
+                alpha,
+                torch.bfloat16,
+            )
+
+        return run
+
+    # Quantize activation on-the-fly
+    def run():
+        input_hf_e2m1, input_hf_e8m0 = fusedQuantizeNv(
+            a, forward_hadamard_matrix, global_scale
+        )
+        input_hf_scale_block = to_blocked(input_hf_e8m0, backend="triton").view(
+            -1, K // 16
+        )
+        return ops.cutlass_scaled_fp4_mm(
+            input_hf_e2m1,
+            weight_hf_e2m1,
+            input_hf_scale_block,
+            weight_hf_scale_block,
+            alpha,
+            torch.bfloat16,
+        )
+
+    return run
+
+
+@triton.testing.perf_report(
+    triton.testing.Benchmark(
+        x_names=["batch_size"],
+        x_vals=[
+            1,
+            4,
+            8,
+            16,
+            32,
+            64,
+            128,
+            256,
+            512,
+            1024,
+            2048,
+            4096,
+            8192,
+            16384,
+            24576,
+            32768,
+        ],
+        x_log=False,
+        line_arg="provider",
+        line_vals=_enabled,
+        line_names=_enabled,
+        ylabel="TFLOP/s (larger is better)",
+        plot_name="BF16 vs NVFP4 GEMMs",
+        args={},
+    )
+)
+def benchmark(batch_size, provider, N, K, had_size):
+    M = batch_size
+    device = "cuda"
+    dtype = torch.bfloat16
+
+    a = torch.randn((M, K), device=device, dtype=dtype)
+    b = torch.randn((N, K), device=device, dtype=dtype)
+    forward_hadamard_matrix = get_hadamard_matrix(had_size, dtype, device)
+
+    quantiles = [0.5, 0.2, 0.8]
+
+    if provider == "torch-bf16":
+        ms, min_ms, max_ms = triton.testing.do_bench_cudagraph(
+            lambda: torch.nn.functional.linear(a, b), rep=200, quantiles=quantiles
+        )
+    else:
+        cfg = PROVIDER_CFGS[provider]
+        run_quant = build_nvfp4_runner(
+            cfg, a, b, forward_hadamard_matrix, dtype, device, M, N, K
+        )
+        ms, min_ms, max_ms = triton.testing.do_bench_cudagraph(
+            lambda: run_quant(), rep=200, quantiles=quantiles
+        )
+
+    to_tflops = lambda t_ms: (2 * M * N * K) * 1e-12 / (t_ms * 1e-3)
+    return to_tflops(ms), to_tflops(max_ms), to_tflops(min_ms)
+
+
+def prepare_shapes(args):
+    out = []
+    for model, tp_size in itertools.product(args.models, args.tp_sizes):
+        for KN, tp_dim in copy.deepcopy(WEIGHT_SHAPES[model]):
+            KN[tp_dim] //= tp_size
+            KN.append(model)
+            out.append(KN)
+    return out
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--models",
+        nargs="+",
+        type=str,
+        default=["meta-llama/Llama-3.3-70B-Instruct"],
+        choices=list(WEIGHT_SHAPES.keys()),
+    )
+    parser.add_argument("--tp-sizes", nargs="+", type=int, default=[1])
+    args = parser.parse_args()
+
+    for K, N, model in prepare_shapes(args):
+        for had_size in [16, 32, 64, 128]:
+            print(f"{model}, N={N} K={K}, HAD={had_size}, BF16 vs NVFP4 GEMMs TFLOP/s:")
+            benchmark.run(
+                print_data=True,
+                show_plots=True,
+                save_path=f"bench_nvfp4_res_n{N}_k{K}",
+                N=N,
+                K=K,
+                had_size=had_size,
+            )
+
+    print("Benchmark finished!")

benchmarks/kernels/bench_per_token_quant_fp8.py

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import itertools
-from typing import Callable
+from collections.abc import Callable
 from unittest.mock import patch
 
 import pandas as pd
@@ -10,7 +10,8 @@ import torch
 from vllm.model_executor.layers.quantization.input_quant_fp8 import QuantFP8
 from vllm.model_executor.layers.quantization.utils.quant_utils import GroupShape
 from vllm.triton_utils import triton
-from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE, FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
 
 def with_triton_mode(fn):

benchmarks/kernels/benchmark_activation.py

@@ -10,7 +10,8 @@ import vllm.model_executor.layers.activation  # noqa F401
 from vllm.model_executor.custom_op import CustomOp
 from vllm.platforms import current_platform
 from vllm.triton_utils import triton
-from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE, FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
 batch_size_range = [1, 16, 32, 64, 128]
 seq_len_range = [1, 16, 64, 128, 256, 512, 1024, 2048, 4096]

benchmarks/kernels/benchmark_bitblas.py

@@ -28,7 +28,7 @@ except ImportError as e:
 
 from bitblas import Matmul, MatmulConfig, auto_detect_nvidia_target
 
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 parser = FlexibleArgumentParser(
     description="Benchmark BitBLAS int4 on a specific target."

benchmarks/kernels/benchmark_cutlass_fp4_moe.py

@@ -20,7 +20,7 @@ from vllm.model_executor.layers.fused_moe.config import (
 from vllm.model_executor.layers.fused_moe.cutlass_moe import cutlass_moe_fp4
 from vllm.model_executor.layers.fused_moe.fused_moe import fused_experts, fused_topk
 from vllm.scalar_type import scalar_types
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 WEIGHT_SHAPES_MOE = {
     "nvidia/DeepSeek-R1-FP4": [

benchmarks/kernels/benchmark_cutlass_moe_fp8.py

@@ -14,7 +14,7 @@ from vllm.model_executor.layers.fused_moe.config import fp8_w8a8_moe_quant_confi
 from vllm.model_executor.layers.fused_moe.cutlass_moe import cutlass_moe_fp8
 from vllm.model_executor.layers.fused_moe.fused_moe import fused_experts, fused_topk
 from vllm.platforms import current_platform
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 # Weight shapes for different models: [num_experts, topk, hidden_size,
 # intermediate_size]

benchmarks/kernels/benchmark_device_communicators.py

@@ -22,8 +22,8 @@ Example:
 import json
 import os
 import time
+from collections.abc import Callable
 from contextlib import nullcontext
-from typing import Callable, Optional
 
 import torch
 import torch.distributed as dist
@@ -39,7 +39,7 @@ from vllm.distributed.device_communicators.pynccl_allocator import (
 )
 from vllm.distributed.device_communicators.symm_mem import SymmMemCommunicator
 from vllm.logger import init_logger
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 logger = init_logger(__name__)
 
@@ -264,12 +264,12 @@ class CommunicatorBenchmark:
     def benchmark_allreduce_single(
         self,
         sequence_length: int,
-        allreduce_fn: Callable[[torch.Tensor], Optional[torch.Tensor]],
+        allreduce_fn: Callable[[torch.Tensor], torch.Tensor | None],
         should_use_fn: Callable[[torch.Tensor], bool],
         context,
         num_warmup: int,
         num_trials: int,
-    ) -> Optional[float]:
+    ) -> float | None:
         """Benchmark method with CUDA graph optimization."""
         try:
             # Create test tensor (2D: sequence_length x hidden_size)

benchmarks/kernels/benchmark_grouped_gemm_cutlass.py

@@ -13,7 +13,7 @@ from vllm.model_executor.layers.fused_moe.fused_moe import (
     fused_experts,
     fused_topk,
 )
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 DEFAULT_MODELS = [
     "nm-testing/Mixtral-8x7B-Instruct-v0.1",

benchmarks/kernels/benchmark_layernorm.py

@@ -7,7 +7,8 @@ import torch
 
 from vllm.model_executor.layers.layernorm import RMSNorm
 from vllm.platforms import current_platform
-from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE, FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
 
 @torch.inference_mode()

benchmarks/kernels/benchmark_lora.py

@@ -6,11 +6,12 @@ import copy
 import json
 import pickle
 import time
+from collections.abc import Callable
 from dataclasses import dataclass
 from enum import Enum, auto
 from itertools import product
 from pathlib import Path
-from typing import Any, Callable, Optional
+from typing import Any
 
 import torch
 import torch.utils.benchmark as TBenchmark
@@ -24,7 +25,7 @@ if HAS_TRITON:
     from vllm.lora.ops.triton_ops import LoRAKernelMeta, lora_expand, lora_shrink
     from vllm.lora.ops.triton_ops.utils import _LORA_A_PTR_DICT, _LORA_B_PTR_DICT
 
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 DEFAULT_MODELS = list(WEIGHT_SHAPES.keys())
 DEFAULT_TP_SIZES = [1]
@@ -158,7 +159,7 @@ def ref_group_gemm(
     seq_lens_cpu: torch.Tensor,
     prompt_lora_mapping_cpu: torch.Tensor,
     scaling: float,
-    add_inputs: Optional[bool],
+    add_inputs: bool | None,
 ):
     """
     Torch group gemm reference implementation to test correctness of
@@ -316,8 +317,8 @@ class BenchmarkContext:
     lora_rank: int
     sort_by_lora_id: bool
     dtype: torch.dtype
-    seq_length: Optional[int] = None
+    seq_length: int | None = None
-    num_slices: Optional[int] = None  # num_slices for slice based ops
+    num_slices: int | None = None  # num_slices for slice based ops
 
     def with_seq_length(self, seq_length: int) -> "BenchmarkContext":
         ctx = copy.copy(self)
@@ -561,7 +562,7 @@ class BenchmarkTensors:
         }
 
     def bench_fn_kwargs(
-        self, op_type: OpType, add_inputs: Optional[bool] = None
+        self, op_type: OpType, add_inputs: bool | None = None
     ) -> dict[str, Any]:
         if op_type.is_shrink_fn():
             assert add_inputs is None
@@ -575,7 +576,7 @@ class BenchmarkTensors:
         raise ValueError(f"Unrecognized optype {self}")
 
     def test_correctness(
-        self, op_type: OpType, expand_fn_add_inputs: Optional[bool]
+        self, op_type: OpType, expand_fn_add_inputs: bool | None
     ) -> bool:
         """
         Test correctness of op_type implementation against a grouped gemm
@@ -611,8 +612,8 @@ def bench_optype(
     ctx: BenchmarkContext,
     arg_pool_size: int,
     op_type: OpType,
-    cuda_graph_nops: Optional[int] = None,
+    cuda_graph_nops: int | None = None,
-    expand_fn_add_inputs: Optional[bool] = None,
+    expand_fn_add_inputs: bool | None = None,
     test_correctness: bool = False,
 ) -> TMeasurement:
     assert arg_pool_size >= 1
@@ -679,7 +680,7 @@ def bench_torch_mm(
     ctx: BenchmarkContext,
     arg_pool_size: int,
     op_type: OpType,
-    cuda_graph_nops: Optional[int] = None,
+    cuda_graph_nops: int | None = None,
 ) -> TMeasurement:
     """
     Benchmark basic torch.mm as a roofline.
@@ -744,7 +745,7 @@ def use_cuda_graph_recommendation() -> str:
             """
 
 
-def print_timers(timers: list[TMeasurement], args: Optional[argparse.Namespace] = None):
+def print_timers(timers: list[TMeasurement], args: argparse.Namespace | None = None):
     compare = TBenchmark.Compare(timers)
     compare.print()
 

benchmarks/kernels/benchmark_machete.py

@@ -8,10 +8,9 @@ import math
 import os
 import pickle as pkl
 import time
-from collections.abc import Iterable
+from collections.abc import Callable, Iterable
 from dataclasses import dataclass
 from itertools import product
-from typing import Callable, Optional
 
 import pandas as pd
 import torch
@@ -34,7 +33,7 @@ from vllm.model_executor.layers.quantization.utils.quant_utils import (
     quantize_weights,
 )
 from vllm.scalar_type import ScalarType, scalar_types
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 DEFAULT_MODELS = ["meta-llama/Llama-3-8b", "meta-llama/Llama-2-70b-hf"]
 DEFAULT_BATCH_SIZES = [1, 16, 32, 64, 128, 256, 512, 1024]
@@ -63,23 +62,23 @@ class BenchmarkTensors:
     a: torch.Tensor
 
     w_q: torch.Tensor
-    group_size: Optional[int]
+    group_size: int | None
     wtype: ScalarType
     w_g_s: torch.Tensor
-    w_g_zp: Optional[torch.Tensor]
+    w_g_zp: torch.Tensor | None
-    w_ch_s: Optional[torch.Tensor]
+    w_ch_s: torch.Tensor | None
-    w_tok_s: Optional[torch.Tensor]
+    w_tok_s: torch.Tensor | None
 
 
 @dataclass
 class TypeConfig:
     act_type: torch.dtype
     weight_type: ScalarType
-    output_type: Optional[torch.dtype]
+    output_type: torch.dtype | None
-    group_scale_type: Optional[torch.dtype]
+    group_scale_type: torch.dtype | None
-    group_zero_type: Optional[torch.dtype]
+    group_zero_type: torch.dtype | None
-    channel_scale_type: Optional[torch.dtype]
+    channel_scale_type: torch.dtype | None
-    token_scale_type: Optional[torch.dtype]
+    token_scale_type: torch.dtype | None
 
 
 def rand_data(shape, dtype=torch.float16, scale=1):
@@ -93,8 +92,8 @@ def quantize_and_pack(
     atype: torch.dtype,
     w: torch.Tensor,
     wtype: ScalarType,
-    stype: Optional[torch.dtype],
+    stype: torch.dtype | None,
-    group_size: Optional[int],
+    group_size: int | None,
     zero_points: bool = False,
 ):
     assert wtype.is_integer(), "TODO: support floating point weights"
@@ -113,7 +112,7 @@ def quantize_and_pack(
 
 
 def create_bench_tensors(
-    shape: tuple[int, int, int], types: TypeConfig, group_size: Optional[int]
+    shape: tuple[int, int, int], types: TypeConfig, group_size: int | None
 ) -> list[BenchmarkTensors]:
     m, n, k = shape
 
@@ -331,8 +330,8 @@ def bench_fns(label: str, sub_label: str, description: str, fns: list[Callable])
     return res
 
 
-_SWEEP_SCHEDULES_RESULTS: Optional[pd.DataFrame] = None
+_SWEEP_SCHEDULES_RESULTS: pd.DataFrame | None = None
-_SWEEP_SCHEDULES_RESULTS_CSV: Optional[str] = None
+_SWEEP_SCHEDULES_RESULTS_CSV: str | None = None
 
 
 def bench(

benchmarks/kernels/benchmark_marlin.py

@@ -44,7 +44,7 @@ from vllm.model_executor.layers.quantization.utils.quant_utils import (
     sort_weights,
 )
 from vllm.scalar_type import ScalarType, scalar_types
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 DEFAULT_MODELS = ["meta-llama/Llama-2-7b-hf/TP1"]
 DEFAULT_BATCH_SIZES = [1, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192]

benchmarks/kernels/benchmark_moe.py

@@ -22,7 +22,7 @@ from vllm.model_executor.layers.fused_moe.fused_moe import *
 from vllm.platforms import current_platform
 from vllm.transformers_utils.config import get_config
 from vllm.triton_utils import triton
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 FP8_DTYPE = current_platform.fp8_dtype()
 
@@ -579,10 +579,12 @@ def main(args: argparse.Namespace):
         E = config.ffn_config.moe_num_experts
         topk = config.ffn_config.moe_top_k
         intermediate_size = config.ffn_config.ffn_hidden_size
+        hidden_size = config.hidden_size
     elif config.architectures[0] == "JambaForCausalLM":
         E = config.num_experts
         topk = config.num_experts_per_tok
         intermediate_size = config.intermediate_size
+        hidden_size = config.hidden_size
     elif config.architectures[0] in (
         "DeepseekV2ForCausalLM",
         "DeepseekV3ForCausalLM",
@@ -592,6 +594,7 @@ def main(args: argparse.Namespace):
         E = config.n_routed_experts
         topk = config.num_experts_per_tok
         intermediate_size = config.moe_intermediate_size
+        hidden_size = config.hidden_size
     elif config.architectures[0] in (
         "Qwen2MoeForCausalLM",
         "Qwen3MoeForCausalLM",
@@ -600,10 +603,18 @@ def main(args: argparse.Namespace):
         E = config.num_experts
         topk = config.num_experts_per_tok
         intermediate_size = config.moe_intermediate_size
+        hidden_size = config.hidden_size
+    elif config.architectures[0] == "Qwen3VLMoeForConditionalGeneration":
+        text_config = config.get_text_config()
+        E = text_config.num_experts
+        topk = text_config.num_experts_per_tok
+        intermediate_size = text_config.moe_intermediate_size
+        hidden_size = text_config.hidden_size
     elif config.architectures[0] in ("HunYuanMoEV1ForCausalLM"):
         E = config.num_experts
         topk = config.moe_topk[0]
         intermediate_size = config.moe_intermediate_size[0]
+        hidden_size = config.hidden_size
     else:
         # Support for llama4
         config = config.get_text_config()
@@ -611,6 +622,7 @@ def main(args: argparse.Namespace):
         E = config.num_local_experts
         topk = config.num_experts_per_tok
         intermediate_size = config.intermediate_size
+        hidden_size = config.hidden_size
     enable_ep = bool(args.enable_expert_parallel)
     if enable_ep:
         ensure_divisibility(E, args.tp_size, "Number of experts")
@@ -619,8 +631,7 @@ def main(args: argparse.Namespace):
     else:
         ensure_divisibility(intermediate_size, args.tp_size, "intermediate_size")
         shard_intermediate_size = 2 * intermediate_size // args.tp_size
-    hidden_size = config.hidden_size
+    dtype = torch.float16 if current_platform.is_rocm() else config.dtype
-    dtype = torch.float16 if current_platform.is_rocm() else config.torch_dtype
     use_fp8_w8a8 = args.dtype == "fp8_w8a8"
     use_int8_w8a16 = args.dtype == "int8_w8a16"
     block_quant_shape = get_weight_block_size_safety(config)

benchmarks/kernels/benchmark_moe_permute_unpermute.py

@@ -17,7 +17,7 @@ from vllm.model_executor.layers.fused_moe.moe_permute_unpermute import (
 )
 from vllm.model_executor.layers.fused_moe.utils import _fp8_quantize
 from vllm.platforms import current_platform
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 FP8_DTYPE = current_platform.fp8_dtype()
 
@@ -344,7 +344,7 @@ def main(args: argparse.Namespace):
         topk = config.num_experts_per_tok
 
     hidden_size = config.hidden_size
-    dtype = torch.float16 if current_platform.is_rocm() else config.torch_dtype
+    dtype = torch.float16 if current_platform.is_rocm() else config.dtype
     use_fp8_w8a8 = args.dtype == "fp8_w8a8"
     use_int8_w8a16 = args.dtype == "int8_w8a16"
     use_customized_permute = args.use_customized_permute

benchmarks/kernels/benchmark_mrope.py

@@ -39,7 +39,7 @@ import torch
 from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.platforms import current_platform
 from vllm.transformers_utils.config import get_config
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
 

benchmarks/kernels/benchmark_paged_attention.py

@@ -3,16 +3,15 @@
 
 import random
 import time
-from typing import Optional
 
 import torch
 
 from vllm import _custom_ops as ops
 from vllm.logger import init_logger
 from vllm.platforms import current_platform
-from vllm.utils import (
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import (
     STR_DTYPE_TO_TORCH_DTYPE,
-    FlexibleArgumentParser,
     create_kv_caches_with_random,
 )
 
@@ -37,7 +36,7 @@ def main(
     seed: int,
     do_profile: bool,
     device: str = "cuda",
-    kv_cache_dtype: Optional[str] = None,
+    kv_cache_dtype: str | None = None,
 ) -> None:
     current_platform.seed_everything(seed)
 

benchmarks/kernels/benchmark_per_token_group_quant.py

@@ -3,8 +3,8 @@
 
 import argparse
 import math
+from collections.abc import Callable
 from contextlib import contextmanager
-from typing import Callable
 from unittest.mock import patch
 
 import torch

benchmarks/kernels/benchmark_polynorm.py

@@ -1,155 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-
-import itertools
-
-import torch
-
-from vllm import _custom_ops as vllm_ops
-from vllm.triton_utils import triton
-
-
-def polynorm_naive(
-    x: torch.Tensor,
-    weight: torch.Tensor,
-    bias: torch.Tensor,
-    eps: float = 1e-6,
-):
-    orig_shape = x.shape
-    x = x.view(-1, x.shape[-1])
-
-    def norm(x, eps: float):
-        return x / torch.sqrt(x.pow(2).mean(-1, keepdim=True) + eps)
-
-    x = x.float()
-    return (
-        (
-            weight[0] * norm(x**3, eps)
-            + weight[1] * norm(x**2, eps)
-            + weight[2] * norm(x, eps)
-            + bias
-        )
-        .to(weight.dtype)
-        .view(orig_shape)
-    )
-
-
-def polynorm_vllm(
-    x: torch.Tensor,
-    weight: torch.Tensor,
-    bias: torch.Tensor,
-    eps: float = 1e-6,
-):
-    orig_shape = x.shape
-    x = x.view(-1, x.shape[-1])
-
-    out = torch.empty_like(x)
-    vllm_ops.poly_norm(out, x, weight, bias, eps)
-    output = out
-
-    output = output.view(orig_shape)
-    return output
-
-
-def calculate_diff(batch_size, seq_len, hidden_dim):
-    dtype = torch.bfloat16
-    x = torch.randn(batch_size, seq_len, hidden_dim, dtype=dtype, device="cuda")
-    weight = torch.ones(3, dtype=dtype, device="cuda")
-    bias = torch.ones(1, dtype=dtype, device="cuda")
-
-    output_naive = polynorm_naive(x, weight, bias)
-    output_vllm = polynorm_vllm(x, weight, bias)
-
-    if torch.allclose(output_naive, output_vllm, atol=1e-2, rtol=1e-2):
-        print("✅ All implementations match")
-    else:
-        print("❌ Implementations differ")
-
-
-batch_size_range = [2**i for i in range(0, 7, 2)]
-seq_length_range = [2**i for i in range(6, 11, 1)]
-dim_range = [2048, 4096]
-configs = list(itertools.product(dim_range, batch_size_range, seq_length_range))
-
-
-def get_benchmark():
-    @triton.testing.perf_report(
-        triton.testing.Benchmark(
-            x_names=["dim", "batch_size", "seq_len"],
-            x_vals=[list(_) for _ in configs],
-            line_arg="provider",
-            line_vals=["naive", "vllm"],
-            line_names=["Naive", "vLLM"],
-            styles=[("blue", "-"), ("red", "-")],
-            ylabel="us",
-            plot_name="polynorm-perf",
-            args={},
-        )
-    )
-    def benchmark(dim, batch_size, seq_len, provider):
-        dtype = torch.bfloat16
-        hidden_dim = dim * 4
-
-        x = torch.randn(batch_size, seq_len, hidden_dim, dtype=dtype, device="cuda")
-        weight = torch.ones(3, dtype=dtype, device="cuda")
-        bias = torch.ones(1, dtype=dtype, device="cuda")
-
-        quantiles = [0.5, 0.2, 0.8]
-
-        if provider == "naive":
-            ms, min_ms, max_ms = triton.testing.do_bench(
-                lambda: polynorm_naive(x, weight, bias),
-                quantiles=quantiles,
-            )
-        else:
-            ms, min_ms, max_ms = triton.testing.do_bench(
-                lambda: polynorm_vllm(x, weight, bias),
-                quantiles=quantiles,
-            )
-
-        return 1000 * ms, 1000 * max_ms, 1000 * min_ms
-
-    return benchmark
-
-
-if __name__ == "__main__":
-    import argparse
-
-    parser = argparse.ArgumentParser()
-    parser.add_argument(
-        "--batch-size",
-        type=int,
-        default=4,
-        help="Batch size",
-    )
-    parser.add_argument(
-        "--seq-len",
-        type=int,
-        default=128,
-        help="Sequence length",
-    )
-    parser.add_argument(
-        "--hidden-dim",
-        type=int,
-        default=8192,
-        help="Intermediate size of MLP",
-    )
-    parser.add_argument(
-        "--save-path",
-        type=str,
-        default="./configs/polnorm/",
-        help="Path to save polnorm benchmark results",
-    )
-
-    args = parser.parse_args()
-
-    # Run correctness test
-    calculate_diff(
-        batch_size=args.batch_size,
-        seq_len=args.seq_len,
-        hidden_dim=args.hidden_dim,
-    )
-
-    benchmark = get_benchmark()
-    # Run performance benchmark
-    benchmark.run(print_data=True, save_path=args.save_path)

benchmarks/kernels/benchmark_quant.py

@@ -7,7 +7,8 @@ import torch
 
 from vllm import _custom_ops as ops
 from vllm.platforms import current_platform
-from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE, FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
 
 @torch.inference_mode()

benchmarks/kernels/benchmark_reshape_and_cache.py

@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-from __future__ import annotations
-
 import random
 import time
 
@@ -11,9 +9,9 @@ from tabulate import tabulate
 from vllm import _custom_ops as ops
 from vllm.logger import init_logger
 from vllm.platforms import current_platform
-from vllm.utils import (
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import (
     STR_DTYPE_TO_TORCH_DTYPE,
-    FlexibleArgumentParser,
     create_kv_caches_with_random,
 )
 

benchmarks/kernels/benchmark_reshape_and_cache_flash.py

@@ -1,7 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-from __future__ import annotations
-
 import random
 import time
 
@@ -14,9 +12,9 @@ from vllm.attention.ops.triton_reshape_and_cache_flash import (
 )
 from vllm.logger import init_logger
 from vllm.platforms import current_platform
-from vllm.utils import (
+from vllm.utils.argparse_utils import FlexibleArgumentParser
+from vllm.utils.torch_utils import (
     STR_DTYPE_TO_TORCH_DTYPE,
-    FlexibleArgumentParser,
     create_kv_caches_with_random_flash,
 )
 

benchmarks/kernels/benchmark_rmsnorm.py

@@ -2,7 +2,6 @@
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import itertools
-from typing import Optional, Union
 
 import torch
 from flashinfer.norm import fused_add_rmsnorm, rmsnorm
@@ -21,8 +20,8 @@ class HuggingFaceRMSNorm(nn.Module):
     def forward(
         self,
         x: torch.Tensor,
-        residual: Optional[torch.Tensor] = None,
+        residual: torch.Tensor | None = None,
-    ) -> Union[torch.Tensor, tuple[torch.Tensor, torch.Tensor]]:
+    ) -> torch.Tensor | tuple[torch.Tensor, torch.Tensor]:
         orig_dtype = x.dtype
         x = x.to(torch.float32)
         if residual is not None:
@@ -41,7 +40,7 @@ class HuggingFaceRMSNorm(nn.Module):
 def rmsnorm_naive(
     x: torch.Tensor,
     weight: torch.Tensor,
-    residual: Optional[torch.Tensor] = None,
+    residual: torch.Tensor | None = None,
     eps: float = 1e-6,
 ):
     naive_norm = HuggingFaceRMSNorm(x.shape[-1], eps=eps)
@@ -65,7 +64,7 @@ def rmsnorm_naive(
 def rmsnorm_flashinfer(
     x: torch.Tensor,
     weight: torch.Tensor,
-    residual: Optional[torch.Tensor] = None,
+    residual: torch.Tensor | None = None,
     eps: float = 1e-6,
 ):
     orig_shape = x.shape
@@ -89,7 +88,7 @@ def rmsnorm_flashinfer(
 def rmsnorm_vllm(
     x: torch.Tensor,
     weight: torch.Tensor,
-    residual: Optional[torch.Tensor] = None,
+    residual: torch.Tensor | None = None,
     eps: float = 1e-6,
 ):
     orig_shape = x.shape

benchmarks/kernels/benchmark_rope.py

@@ -2,14 +2,13 @@
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from itertools import accumulate
-from typing import Optional
 
 import nvtx
 import torch
 
 from vllm.model_executor.layers.rotary_embedding import RotaryEmbedding, get_rope
 from vllm.platforms import current_platform
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 
 def benchmark_rope_kernels_multi_lora(
@@ -18,7 +17,7 @@ def benchmark_rope_kernels_multi_lora(
     seq_len: int,
     num_heads: int,
     head_size: int,
-    rotary_dim: Optional[int],
+    rotary_dim: int | None,
     dtype: torch.dtype,
     seed: int,
     device: str,

benchmarks/kernels/benchmark_silu_mul_fp8_quant.py

@@ -1,5 +1,19 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+"""
+Comprehensive 3-way SiLU Benchmark Suite
+
+This benchmark compares three SiLU implementations:
+1. SiLU V2 (CUDA) - Optimized CUDA kernel implementation
+2. Triton Kernel - Triton-based implementation
+
+The suite generates detailed performance comparisons including:
+- Memory bandwidth utilization
+- Speedup ratios (baseline vs optimized implementations)
+- Performance across different expert configurations and token distributions
+"""
+
 from collections.abc import Callable
 
 import matplotlib.pyplot as plt
@@ -7,7 +21,7 @@ import numpy as np
 import torch
 
 from vllm.model_executor.layers.fused_moe.batched_deep_gemm_moe import (
-    silu_mul_fp8_quant_deep_gemm_cuda,
+    persistent_masked_m_silu_mul_quant,
 )
 from vllm.platforms import current_platform
 from vllm.triton_utils import tl, triton
@@ -94,6 +108,7 @@ def silu_mul_fp8_quant_deep_gemm_triton(
     num_parallel_tokens,
     group_size: int = 128,
     eps: float = 1e-10,
+    expert_offsets: torch.Tensor = None,
 ) -> tuple[torch.Tensor, torch.Tensor]:
     """Quantize silu(y[..., :H]) * y[..., H:] to FP8 with group per-token scales
 
@@ -174,7 +189,7 @@ def silu_mul_fp8_quant_deep_gemm_triton(
 
 
 # Parse generation strategies
-strategies = ["uniform", "max_t", "first_t"]
+strategies = ["random_imbalanced", "uniform", "max_t"]
 
 
 def benchmark(
@@ -195,15 +210,27 @@ def benchmark(
         current_platform.seed_everything(42 + seed_offset)
         y = torch.rand((E, T, 2 * H), dtype=torch.bfloat16, device="cuda").contiguous()
 
-        if gen_strategy == "uniform":
+        if gen_strategy == "random_imbalanced":
-            r = torch.rand(size=(E,), device="cuda")
+
+            def generate_expert_loads(n_e, total_tokens, ratio, device="cuda"):
+                mean = total_tokens // n_e
+                min_max = mean // ratio
+                e = torch.ones(size=(E,), dtype=torch.int64, device=device) * mean
+                e[0] = min_max
+                r = torch.rand(size=(E - 1,))
+                r /= r.sum()
+                r *= total_tokens - min_max
+                r = r.round().long()
+                e[1:] = r.to(device=device)
+                return e
+
+            tokens_per_expert = generate_expert_loads(E, total_tokens, 0.7, "cuda")
+        elif gen_strategy == "uniform":
+            r = torch.rand(size=(E,))
             r /= r.sum()
             r *= total_tokens
-            tokens_per_expert = r.int()
+            r = r.round().long()
-            tokens_per_expert = torch.minimum(
+            tokens_per_expert = r
-                tokens_per_expert,
-                torch.ones((E,), device=r.device, dtype=torch.int) * T,
-            )
         elif gen_strategy == "max_t":
             tokens_per_expert = torch.empty(size=(E,), dtype=torch.int32, device="cuda")
             tokens_per_expert.fill_(total_tokens / E)
@@ -281,40 +308,34 @@ def benchmark(
 
 
 def create_comparison_plot(
-    ratio, cuda_times, baseline_times, config_labels, strategy_name, id
+    ratios, silu_v2_times, triton_times, config_labels, strategy_name, id
 ):
-    """Create a comparison plot for a specific generation strategy"""
+    fig, ax = plt.subplots(1, 1, figsize=(18, 6))
-    fig, ax = plt.subplots(1, 1, figsize=(16, 6))
 
     # Configure x-axis positions
     x = np.arange(len(config_labels))
-    width = 0.35
+    width = 0.25
 
     # Execution Time plot (lower is better)
+    ax.bar(x, silu_v2_times, width, label="SiLU V2 (CUDA)", alpha=0.8, color="blue")
     ax.bar(
-        x - width / 2, cuda_times, width, label="CUDA Kernel", alpha=0.8, color="blue"
+        x + width, triton_times, width, label="Triton Kernel", alpha=0.8, color="green"
-    )
-    ax.bar(
-        x + width / 2,
-        baseline_times,
-        width,
-        label="Baseline",
-        alpha=0.8,
-        color="orange",
     )
 
-    # Add speedup labels over each bar pair
+    # Add speedup labels over each bar trio
     for i in range(len(x)):
-        speedup = ratio[i]
+        triton_v2_speedup = ratios[i][1]  # triton/v2
-        max_height = max(cuda_times[i], baseline_times[i])
+        max_height = max(silu_v2_times[i], triton_times[i])
+
+        # Triton/V2 speedup
         ax.text(
-            x[i],
+            x[i] + width / 2,
             max_height + max_height * 0.02,
-            f"{speedup:.2f}x",
+            f"{triton_v2_speedup:.2f}x",
             ha="center",
             va="bottom",
             fontweight="bold",
-            fontsize=9,
+            fontsize=8,
         )
 
     ax.set_xlabel("Configuration")
@@ -332,56 +353,75 @@ def create_comparison_plot(
 
 
 def create_combined_plot(all_results):
-    """Create a combined plot with all strategies in one PNG"""
     num_strategies = len(all_results)
-    fig, axes = plt.subplots(num_strategies, 1, figsize=(20, 6 * num_strategies))
+    fig, axes = plt.subplots(num_strategies, 1, figsize=(22, 7 * num_strategies))
 
     if num_strategies == 1:
         axes = [axes]
 
     for idx, (
         strategy_name,
-        ratio,
+        all_ratios,
-        cuda_times,
+        all_silu_v2_results,
-        baseline_times,
+        all_triton_results,
         config_labels,
+        config_x_axis,
     ) in enumerate(all_results):
         ax = axes[idx]
 
+        # Flatten the nested results to get bandwidth percentages for plotting
+        silu_v2_bandwidths = []
+        triton_bandwidths = []
+        flat_ratios = []
+
+        for config_results in all_silu_v2_results:
+            for result in config_results:
+                silu_v2_bandwidths.append(result[3])  # bandwidth percentage
+
+        for config_results in all_triton_results:
+            for result in config_results:
+                triton_bandwidths.append(result[3])  # bandwidth percentage
+
+        for config_ratios in all_ratios:
+            for ratio in config_ratios:
+                flat_ratios.append(ratio)
+
         # Configure x-axis positions
         x = np.arange(len(config_labels))
-        width = 0.35
+        width = 0.25
 
-        # Execution Time plot (lower is better)
+        # Bandwidth utilization plot (higher is better)
         ax.bar(
-            x - width / 2,
+            x,
-            cuda_times,
+            silu_v2_bandwidths,
             width,
-            label="CUDA Kernel",
+            label="SiLU V2 (CUDA)",
             alpha=0.8,
             color="blue",
         )
         ax.bar(
-            x + width / 2,
+            x + width,
-            baseline_times,
+            triton_bandwidths,
             width,
-            label="Baseline",
+            label="Triton Kernel",
             alpha=0.8,
-            color="orange",
+            color="green",
         )
 
-        # Add speedup labels over each bar pair
+        # Add speedup labels over each bar trio
         for i in range(len(x)):
-            speedup = ratio[i]
+            triton_v2_speedup = flat_ratios[i]  # triton/v2
-            max_height = max(cuda_times[i], baseline_times[i])
+            max_height = max(silu_v2_bandwidths[i], triton_bandwidths[i])
+
+            # Triton/V2 speedup
             ax.text(
-                x[i],
+                x[i] + width / 2,
                 max_height + max_height * 0.02,
-                f"{speedup:.2f}x",
+                f"{triton_v2_speedup:.2f}x",
                 ha="center",
                 va="bottom",
                 fontweight="bold",
-                fontsize=9,
+                fontsize=8,
             )
 
         ax.set_xlabel("Configuration")
@@ -395,7 +435,7 @@ def create_combined_plot(all_results):
         ax.grid(True, alpha=0.3)
 
     plt.tight_layout()
-    filename = "../../silu_bench/silu_benchmark_combined.png"
+    filename = "silu_benchmark_combined_3way.png"
     plt.savefig(filename, dpi=300, bbox_inches="tight")
     plt.show()
 
@@ -405,7 +445,9 @@ def create_combined_plot(all_results):
 outer_dim = 7168
 configs = [
     # DeepSeekV3 Configs
+    # (1, 56, 7168),
     (8, 1024, 7168),
+    # (32, 56, 7168),
     # DeepSeekV3 Configs
     (32, 1024, 7168),
     # DeepSeekV3 Configs
@@ -417,6 +459,7 @@ num_warmups = 20
 
 strategy_descriptions = {
     "uniform": "Uniform Random",
+    "random_imbalanced": "Imbalanced Random",
     "max_t": "Even Assignment",
     "first_t": "experts[0] = T, experts[1:] = 0",
 }
@@ -433,28 +476,31 @@ for id, strategy in enumerate(strategies):
     print(f"Testing strategy: {strategy_descriptions[strategy]}")
     print(f"{'=' * 60}")
 
-    # Collect benchmark data for both algorithms
+    # Collect benchmark data for all three algorithms
     config_labels = []
     config_x_axis = []
-    all_cuda_results = []
+    all_silu_v2_results = []
-    all_baseline_results = []
+    all_triton_results = []
     all_ratios = []
 
     for E, T, H in configs:
-        total_tokens_config = [8 * E, 16 * E, 32 * E, 64 * E, 128 * E, 256 * E]
+        total_tokens_config = []
+        for i in [8, 16, 32, 64, 128, 256, 512]:
+            if i <= T:
+                total_tokens_config.append(i * E)
         config_x_axis.append(total_tokens_config)
 
-        cuda_results = []
+        silu_v2_results = []
-        baseline_results = []
+        triton_results = []
         ratios = []
 
         for total_tokens in total_tokens_config:
             config_label = f"E={E},T={T},H={H},TT={total_tokens}"
             config_labels.append(config_label)
 
-            # CUDA kernel results
+            # SiLU V2 (CUDA kernel) results
-            time_ms_cuda, gflops, gbps, perc = benchmark(
+            time_ms_silu_v2, gflops, gbps, perc = benchmark(
-                silu_mul_fp8_quant_deep_gemm_cuda,
+                persistent_masked_m_silu_mul_quant,
                 E,
                 T,
                 H,
@@ -463,9 +509,9 @@ for id, strategy in enumerate(strategies):
                 num_warmups=num_warmups,
                 gen_strategy=strategy,
             )
-            cuda_results.append((time_ms_cuda, gflops, gbps, perc))
+            silu_v2_results.append((time_ms_silu_v2, gflops, gbps, perc))
 
-            # Baseline results
+            # Triton kernel results
             time_ms_triton, gflops, gbps, perc = benchmark(
                 silu_mul_fp8_quant_deep_gemm_triton,
                 E,
@@ -476,12 +522,20 @@ for id, strategy in enumerate(strategies):
                 num_warmups=num_warmups,
                 gen_strategy=strategy,
             )
-            baseline_results.append((time_ms_triton, gflops, gbps, perc))
+            triton_results.append((time_ms_triton, gflops, gbps, perc))
-            ratios.append(time_ms_triton / time_ms_cuda)
 
-            print(f"Completed: {config_label}")
+            # Calculate speedup ratios (triton baseline / implementation)
-        all_cuda_results.append(cuda_results)
+            triton_v2_ratio = time_ms_triton / time_ms_silu_v2
-        all_baseline_results.append(baseline_results)
+            ratios.append(triton_v2_ratio)
+
+            print(
+                f"Completed: {config_label}:"
+                f" V2: {time_ms_silu_v2:.3f}ms,"
+                f" Triton: {time_ms_triton:.3f}ms"
+            )
+
+        all_silu_v2_results.append(silu_v2_results)
+        all_triton_results.append(triton_results)
         all_ratios.append(ratios)
 
     # Store results for combined plotting
@@ -489,8 +543,8 @@ for id, strategy in enumerate(strategies):
         (
             strategy_descriptions[strategy],
             all_ratios,
-            all_cuda_results,
+            all_silu_v2_results,
-            all_baseline_results,
+            all_triton_results,
             config_labels,
             config_x_axis,
         )
@@ -498,15 +552,18 @@ for id, strategy in enumerate(strategies):
 
     # Print summary table for this strategy
     print(f"\nSummary Table - {strategy_descriptions[strategy]}:")
-    print(f"{'Config':<20} {'CUDA Time(ms)':<12} {'Base Time(ms)':<12} {'Speedup':<8}")
+    print(f" {'V2 Time(ms)':<12} {'Triton Time(ms)':<14} {'Triton/V2':<10}")
-    print("-" * 60)
+    print("-" * 90)
 
     for i, (E, T, H) in enumerate(configs):
-        speedup = baseline_results[i][0] / cuda_results[i][0]
+        # Get the first result for each config (simplifying for summary)
+        v2_time = silu_v2_results[i][0]
+        triton_time = triton_results[i][0]
+        triton_v2_speedup = triton_time / v2_time
         config_label = f"E={E:3d},T={T:4d},H={H:4d}"
         print(
-            f"{config_label:<20} {cuda_results[i][0]:8.5f} "
+            f"{config_label:<20} {v2_time:8.5f} {triton_time:10.5f} "
-            f"{baseline_results[i][0]:8.5f} {speedup:6.2f}x"
+            f"{triton_v2_speedup:8.2f}x"
         )
 
 
@@ -514,15 +571,14 @@ def create_total_tokens_plot(all_results):
     num_strategies = len(all_results)
     num_configs = len(configs)
 
-    # Create side-by-side subplots: 2 columns for speedup and bandwidth percentage
     fig, axs = plt.subplots(
-        num_strategies, num_configs * 2, figsize=(28, 6 * num_strategies)
+        num_strategies, num_configs * 2, figsize=(32, 8 * num_strategies)
     )
 
     # Add main title to the entire figure
     fig.suptitle(
-        "Performance Analysis: Speedup vs Bandwidth Utilization (Triton & CUDA)",
+        "Performance Analysis: Speedup vs Bandwidth Utilization (SiLU V2, and Triton)",
-        fontsize=16,
+        fontsize=18,
         fontweight="bold",
         y=0.98,
     )
@@ -539,8 +595,8 @@ def create_total_tokens_plot(all_results):
         (
             strategy_name,
             all_ratios,
-            all_cuda_results,
+            all_silu_v2_results,
-            all_baseline_results,
+            all_triton_results,
             config_labels,
             config_x_axis,
         ) = result
@@ -555,42 +611,54 @@ def create_total_tokens_plot(all_results):
             ratios = all_ratios[config_idx]
             total_tokens_values = config_x_axis[config_idx]
 
-            # Extract CUDA and Triton bandwidth percentages
+            # Extract speedup ratios
-            cuda_bandwidth_percentages = [
+            triton_v2_ratios = [ratio for ratio in ratios]
-                result[3] for result in all_cuda_results[config_idx]
+
+            # Extract bandwidth percentages for all implementations
+            v2_bandwidth_percentages = [
+                result[3] for result in all_silu_v2_results[config_idx]
             ]
             triton_bandwidth_percentages = [
-                result[3] for result in all_baseline_results[config_idx]
+                result[3] for result in all_triton_results[config_idx]
             ]
 
             # Plot speedup ratios vs total tokens (left plot)
             ax_speedup.plot(
-                total_tokens_values, ratios, "bo-", linewidth=3, markersize=8
+                total_tokens_values,
+                triton_v2_ratios,
+                "go-",
+                linewidth=3,
+                markersize=8,
+                label="Triton/V2 Speedup",
             )
             ax_speedup.set_title(
-                f"{strategy_name}\nSpeedup (CUDA/Triton)\nE={E}, T={T}, H={H}",
+                f"{strategy_name}\nSpeedup vs Baseline (Triton)\nE={E}, T={T}, H={H}",
                 fontsize=12,
                 fontweight="bold",
             )
             ax_speedup.set_xlabel("Total Tokens", fontweight="bold", fontsize=11)
             ax_speedup.set_ylabel("Speedup Ratio", fontweight="bold", fontsize=11)
+            ax_speedup.legend(prop={"weight": "bold"})
             ax_speedup.grid(True, alpha=0.3)
 
+            # Plot bandwidth utilization (right plot)
             ax_bandwidth.plot(
                 total_tokens_values,
-                cuda_bandwidth_percentages,
+                v2_bandwidth_percentages,
-                "ro-",
+                "o-",
                 linewidth=3,
                 markersize=8,
-                label="CUDA",
+                label="SiLU V2",
+                color="blue",
             )
             ax_bandwidth.plot(
                 total_tokens_values,
                 triton_bandwidth_percentages,
-                "go-",
+                "o-",
                 linewidth=3,
                 markersize=8,
                 label="Triton",
+                color="green",
             )
             ax_bandwidth.set_title(
                 f"{strategy_name}\nBandwidth Utilization (Hopper)\nE={E}, T={T}, H={H}",
@@ -618,38 +686,12 @@ def create_total_tokens_plot(all_results):
                 for label in ax.get_xticklabels() + ax.get_yticklabels():
                     label.set_fontweight("bold")
 
-            # Add value labels on speedup points
+            # Add value labels on Triton/V2 speedup points
-            for x, y in zip(total_tokens_values, ratios):
+            for x, y in zip(total_tokens_values, triton_v2_ratios):
                 ax_speedup.annotate(
                     f"{y:.2f}x",
                     (x, y),
                     textcoords="offset points",
-                    xytext=(0, 12),
-                    ha="center",
-                    fontsize=10,
-                    fontweight="bold",
-                    bbox=dict(boxstyle="round,pad=0.3", facecolor="white", alpha=0.7),
-                )
-
-            # Add value labels on CUDA bandwidth points
-            for x, y in zip(total_tokens_values, cuda_bandwidth_percentages):
-                ax_bandwidth.annotate(
-                    f"{y:.1f}%",
-                    (x, y),
-                    textcoords="offset points",
-                    xytext=(0, 12),
-                    ha="center",
-                    fontsize=9,
-                    fontweight="bold",
-                    bbox=dict(boxstyle="round,pad=0.2", facecolor="red", alpha=0.3),
-                )
-
-            # Add value labels on Triton bandwidth points
-            for x, y in zip(total_tokens_values, triton_bandwidth_percentages):
-                ax_bandwidth.annotate(
-                    f"{y:.1f}%",
-                    (x, y),
-                    textcoords="offset points",
                     xytext=(0, -15),
                     ha="center",
                     fontsize=9,
@@ -659,17 +701,20 @@ def create_total_tokens_plot(all_results):
 
     plt.tight_layout()
     plt.subplots_adjust(top=0.93)  # Make room for main title
-    filename = "silu_benchmark_total_tokens.png"
+    filename = "silu_benchmark_total_tokens_3way.png"
     plt.savefig(filename, dpi=300, bbox_inches="tight")
     plt.show()
 
     return filename
 
 
-# Create combined plot with all strategies
+# Create comprehensive 3-way comparison plots
-combined_plot_filename = create_total_tokens_plot(all_results)
+combined_plot_filename = create_combined_plot(all_results)
+total_tokens_plot_filename = create_total_tokens_plot(all_results)
 
-print(f"\n{'=' * 60}")
+print(f"\n{'=' * 80}")
-print("Benchmark Complete!")
+print("3-Way Benchmark Suite Complete!")
-print(f"Generated combined plot: {combined_plot_filename}")
+print(f"Generated combined comparison plot: {combined_plot_filename}")
-print(f"{'=' * 60}")
+print(f"Generated total tokens analysis plot: {total_tokens_plot_filename}")
+print("Compared: SiLU V2 (CUDA), and Triton implementations")
+print(f"{'=' * 80}")

benchmarks/kernels/benchmark_trtllm_decode_attention.py

@@ -4,12 +4,11 @@
 import csv
 import os
 from datetime import datetime
-from typing import Optional
 
 import flashinfer
 import torch
 
-from vllm.utils import round_up
+from vllm.utils.math_utils import round_up
 
 FLOAT32_BYTES = torch.finfo(torch.float).bits // 8
 FP8_DTYPE = torch.float8_e4m3fn
@@ -28,9 +27,7 @@ def to_float8(x, dtype=torch.float8_e4m3fn):
 @torch.no_grad()
 def benchmark_decode(
     dtype: torch.dtype,
-    quant_dtypes: tuple[
+    quant_dtypes: tuple[torch.dtype | None, torch.dtype | None, torch.dtype | None],
-        Optional[torch.dtype], Optional[torch.dtype], Optional[torch.dtype]
-    ],
     batch_size: int,
     max_seq_len: int,
     num_heads: tuple[int, int] = (64, 8),

benchmarks/kernels/benchmark_trtllm_prefill_attention.py

@@ -4,12 +4,11 @@
 import csv
 import os
 from datetime import datetime
-from typing import Optional
 
 import flashinfer
 import torch
 
-from vllm.utils import round_up
+from vllm.utils.math_utils import round_up
 
 FLOAT32_BYTES = torch.finfo(torch.float).bits // 8
 FP8_DTYPE = torch.float8_e4m3fn
@@ -28,9 +27,7 @@ def to_float8(x, dtype=torch.float8_e4m3fn):
 @torch.no_grad()
 def benchmark_prefill(
     dtype: torch.dtype,
-    quant_dtypes: tuple[
+    quant_dtypes: tuple[torch.dtype | None, torch.dtype | None, torch.dtype | None],
-        Optional[torch.dtype], Optional[torch.dtype], Optional[torch.dtype]
-    ],
     batch_size: int,
     max_seq_len: int,
     num_heads: tuple[int, int] = (64, 8),

benchmarks/kernels/benchmark_w8a8_block_fp8.py

@@ -14,11 +14,11 @@ import torch
 from tqdm import tqdm
 
 from vllm.model_executor.layers.quantization.utils.fp8_utils import (
-    _w8a8_block_fp8_matmul,
+    _w8a8_triton_block_scaled_mm,
 )
 from vllm.platforms import current_platform
 from vllm.triton_utils import triton
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 mp.set_start_method("spawn", force=True)
 
@@ -83,7 +83,7 @@ def w8a8_block_matmul(
         )
 
     if A.dtype == torch.float8_e4m3fn:
-        kernel = _w8a8_block_fp8_matmul
+        kernel = _w8a8_triton_block_scaled_mm
     else:
         raise RuntimeError("Currently, only support tune w8a8 block fp8 kernel.")
 

benchmarks/kernels/graph_machete_bench.py

@@ -11,7 +11,7 @@ import regex as re
 import seaborn as sns
 from torch.utils.benchmark import Measurement as TMeasurement
 
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 if __name__ == "__main__":
     parser = FlexibleArgumentParser(

benchmarks/kernels/utils.py

@@ -2,8 +2,8 @@
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import dataclasses
-from collections.abc import Iterable
+from collections.abc import Callable, Iterable
-from typing import Any, Callable, Optional
+from typing import Any
 
 import torch
 import torch.utils.benchmark as TBenchmark
@@ -55,7 +55,7 @@ class Bench:
 
     def __init__(
         self,
-        cuda_graph_params: Optional[CudaGraphBenchParams],
+        cuda_graph_params: CudaGraphBenchParams | None,
         label: str,
         sub_label: str,
         description: str,

benchmarks/multi_turn/bench_dataset.py

@@ -2,7 +2,7 @@
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 from abc import ABC, abstractmethod
 from statistics import mean
-from typing import Any, NamedTuple, Optional, Union
+from typing import Any, NamedTuple
 
 import numpy as np  # type: ignore
 import pandas as pd  # type: ignore
@@ -35,8 +35,8 @@ class Distribution(ABC):
 class UniformDistribution(Distribution):
     def __init__(
         self,
-        min_val: Union[int, float],
+        min_val: int | float,
-        max_val: Union[int, float],
+        max_val: int | float,
         is_integer: bool = True,
     ) -> None:
         self.min_val = min_val
@@ -56,7 +56,7 @@ class UniformDistribution(Distribution):
 
 
 class ConstantDistribution(Distribution):
-    def __init__(self, value: Union[int, float]) -> None:
+    def __init__(self, value: int | float) -> None:
         self.value = value
         self.max_val = value
 
@@ -68,7 +68,7 @@ class ConstantDistribution(Distribution):
 
 
 class ZipfDistribution(Distribution):
-    def __init__(self, alpha: float, max_val: Optional[int] = None) -> None:
+    def __init__(self, alpha: float, max_val: int | None = None) -> None:
         self.alpha = alpha
         self.max_val = max_val
 
@@ -83,7 +83,7 @@ class ZipfDistribution(Distribution):
 
 
 class PoissonDistribution(Distribution):
-    def __init__(self, alpha: float, max_val: Optional[int] = None) -> None:
+    def __init__(self, alpha: float, max_val: int | None = None) -> None:
         self.alpha = alpha
         self.max_val = max_val
 
@@ -100,11 +100,11 @@ class PoissonDistribution(Distribution):
 class LognormalDistribution(Distribution):
     def __init__(
         self,
-        mean: Optional[float] = None,
+        mean: float | None = None,
-        sigma: Optional[float] = None,
+        sigma: float | None = None,
-        average: Optional[int] = None,
+        average: int | None = None,
-        median_ratio: Optional[float] = None,
+        median_ratio: float | None = None,
-        max_val: Optional[int] = None,
+        max_val: int | None = None,
     ) -> None:
         self.average = average
         self.median_ratio = median_ratio

benchmarks/multi_turn/benchmark_serving_multi_turn.py

@@ -13,7 +13,7 @@ from datetime import datetime
 from enum import Enum
 from http import HTTPStatus
 from statistics import mean
-from typing import NamedTuple, Optional, Union
+from typing import NamedTuple
 
 import aiohttp  # type: ignore
 import numpy as np  # type: ignore
@@ -46,9 +46,9 @@ class ConversationSampling(str, Enum):
 
 class ClientArgs(NamedTuple):
     seed: int
-    max_num_requests: Optional[int]
+    max_num_requests: int | None
     skip_first_turn: bool
-    max_turns: Optional[int]
+    max_turns: int | None
     max_active_conversations: int
     verbose: bool
     print_content: bool
@@ -109,9 +109,9 @@ class RequestStats(NamedTuple):
 
 class MetricStats:
     def __init__(self) -> None:
-        self.min: Optional[float] = None
+        self.min: float | None = None
-        self.max: Optional[float] = None
+        self.max: float | None = None
-        self.avg: Optional[float] = None
+        self.avg: float | None = None
         self.sum = 0.0
         self.count = 0
 
@@ -143,7 +143,7 @@ class MovingAverage:
         self.index = 0
         self.sum = 0.0
         self.count = 0
-        self.avg: Optional[float] = None
+        self.avg: float | None = None
 
     def update(self, new_value: float) -> None:
         if self.count < self.window_size:
@@ -169,7 +169,7 @@ class MovingAverage:
 class DebugStats:
     def __init__(self, logger: logging.Logger, window_size: int) -> None:
         self.logger = logger
-        self.metrics: dict[str, Union[MovingAverage, MetricStats]] = {
+        self.metrics: dict[str, MovingAverage | MetricStats] = {
             "moving_avg_ttft_ms": MovingAverage(window_size),
             "moving_avg_tpot_ms": MovingAverage(window_size),
             "ttft_ms": MetricStats(),
@@ -198,14 +198,6 @@ class DebugStats:
         self.logger.info("-" * 50)
 
 
-# Must support Python 3.8, we can't use str.removeprefix(prefix)
-# introduced in Python 3.9
-def remove_prefix(text: str, prefix: str) -> str:
-    if text.startswith(prefix):
-        return text[len(prefix) :]
-    return text
-
-
 def nanosec_to_millisec(value: float) -> float:
     return value / 1000000.0
 
@@ -220,8 +212,8 @@ async def send_request(
     chat_url: str,
     model: str,
     stream: bool = True,
-    min_tokens: Optional[int] = None,
+    min_tokens: int | None = None,
-    max_tokens: Optional[int] = None,
+    max_tokens: int | None = None,
 ) -> ServerResponse:
     payload = {
         "model": model,
@@ -250,9 +242,9 @@ async def send_request(
     timeout = aiohttp.ClientTimeout(total=timeout_sec)
 
     valid_response = True
-    ttft: Optional[float] = None
+    ttft: float | None = None
     chunk_delay: list[int] = []
-    latency: Optional[float] = None
+    latency: float | None = None
     first_chunk = ""
     generated_text = ""
 
@@ -269,7 +261,7 @@ async def send_request(
                 if not chunk_bytes:
                     continue
 
-                chunk = remove_prefix(chunk_bytes.decode("utf-8"), "data: ")
+                chunk = chunk_bytes.decode("utf-8").removeprefix("data: ")
                 if chunk == "[DONE]":
                     # End of stream
                     latency = time.perf_counter_ns() - start_time
@@ -364,7 +356,7 @@ async def send_turn(
     req_args: RequestArgs,
     verbose: bool,
     verify_output: bool,
-) -> Optional[RequestStats]:
+) -> RequestStats | None:
     assert messages_to_use > 0
     assert messages_to_use <= len(conversation_messages)
 
@@ -644,7 +636,7 @@ async def client_main(
 
             if args.verbose:
                 curr_time_sec: float = time.perf_counter()
-                time_since_last_turn: Union[str, float] = "N/A"
+                time_since_last_turn: str | float = "N/A"
                 if conv_id in time_of_last_turn:
                     time_since_last_turn = round(
                         curr_time_sec - time_of_last_turn[conv_id], 3
@@ -769,7 +761,7 @@ def get_client_config(
             "Number of conversations must be equal or larger than the number of clients"
         )
 
-    max_req_per_client: Optional[int] = None
+    max_req_per_client: int | None = None
     if args.max_num_requests is not None:
         # Max number of requests per client
         req_per_client = args.max_num_requests // args.num_clients
@@ -936,13 +928,13 @@ async def main_mp(
                     f"{num_clients_finished} out of {bench_args.num_clients} clients finished, collected {len(client_metrics)} measurements, runtime {runtime_sec:.3f} sec{Color.RESET}"  # noqa: E501
                 )
 
-                rps: Union[str, float] = round(len(client_metrics) / runtime_sec, 3)
+                rps: str | float = round(len(client_metrics) / runtime_sec, 3)
                 if len(client_metrics) < (5 * bench_args.num_clients):
                     # Do not estimate the RPS if the number of samples is very low
                     # (threshold can be tuned if needed)
                     rps = "N/A"
 
-                runtime_left_sec: Union[str, float] = round(
+                runtime_left_sec: str | float = round(
                     (runtime_sec / finished_convs) * (total_convs - finished_convs), 3
                 )
                 if percent < 0.05:
@@ -1032,7 +1024,7 @@ def process_statistics(
     warmup_percentages: list[float],
     test_params: dict,
     verbose: bool,
-    gen_conv_args: Optional[GenConvArgs] = None,
+    gen_conv_args: GenConvArgs | None = None,
     excel_output: bool = False,
 ) -> None:
     if len(client_metrics) == 0:
@@ -1259,7 +1251,7 @@ async def main() -> None:
         default=None,
         help="The model name used in the API. "
         "If not specified, the model name will be the "
-        "same as the ``--model`` argument. ",
+        "same as the `--model` argument. ",
     )
 
     parser.add_argument(

benchmarks/multi_turn/convert_sharegpt_to_openai.py

@@ -13,7 +13,7 @@ import argparse
 import json
 import random
 from statistics import mean
-from typing import Any, Optional
+from typing import Any
 
 import pandas as pd  # type: ignore
 import tqdm  # type: ignore
@@ -25,7 +25,7 @@ def has_non_english_chars(text: str) -> bool:
 
 
 def content_is_valid(
-    content: str, min_content_len: Optional[int], max_content_len: Optional[int]
+    content: str, min_content_len: int | None, max_content_len: int | None
 ) -> bool:
     if min_content_len and len(content) < min_content_len:
         return False
@@ -37,7 +37,7 @@ def content_is_valid(
 
 
 def print_stats(
-    conversations: "list[dict[Any, Any]]", tokenizer: Optional[AutoTokenizer] = None
+    conversations: "list[dict[Any, Any]]", tokenizer: AutoTokenizer | None = None
 ) -> None:
     # Collect statistics
     stats = []
@@ -109,12 +109,12 @@ def convert_sharegpt_to_openai(
     seed: int,
     input_file: str,
     output_file: str,
-    max_items: Optional[int],
+    max_items: int | None,
-    min_content_len: Optional[int] = None,
+    min_content_len: int | None = None,
-    max_content_len: Optional[int] = None,
+    max_content_len: int | None = None,
-    min_turns: Optional[int] = None,
+    min_turns: int | None = None,
-    max_turns: Optional[int] = None,
+    max_turns: int | None = None,
-    model: Optional[str] = None,
+    model: str | None = None,
 ) -> None:
     if min_turns and max_turns:
         assert min_turns <= max_turns

benchmarks/overheads/benchmark_hashing.py

@@ -5,7 +5,7 @@ import cProfile
 import pstats
 
 from vllm import LLM, SamplingParams
-from vllm.utils import FlexibleArgumentParser
+from vllm.utils.argparse_utils import FlexibleArgumentParser
 
 # A very long prompt, total number of tokens is about 15k.
 LONG_PROMPT = ["You are an expert in large language models, aren't you?"] * 1000

cmake/cpu_extension.cmake

@@ -188,34 +188,79 @@ else()
     message(FATAL_ERROR "vLLM CPU backend requires AVX512, AVX2, Power9+ ISA, S390X ISA, ARMv8 or RISC-V support.")
 endif()
 
-#
-# Build oneDNN for W8A8 GEMM kernels (only for x86-AVX512 /ARM platforms)
-# Flag to enable ACL kernels for AARCH64 platforms
-if (VLLM_BUILD_ACL STREQUAL "ON")
-    set(USE_ACL ON)
-else()
-    set(USE_ACL OFF)
-endif()
 
+# Build oneDNN for GEMM kernels (only for x86-AVX512 /ARM platforms)
 if ((AVX512_FOUND AND NOT AVX512_DISABLED) OR (ASIMD_FOUND AND NOT APPLE_SILICON_FOUND) OR POWER9_FOUND OR POWER10_FOUND OR POWER11_FOUND)
-    FetchContent_Declare(
+    # Fetch and build Arm Compute Library (ACL) as oneDNN's backend for AArch64
-        oneDNN
+    # TODO [fadara01]: remove this once ACL can be fetched and built automatically as a dependency of oneDNN
-        GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git
+    if(ASIMD_FOUND)
-        GIT_TAG v3.9
+        if(DEFINED ENV{ACL_ROOT_DIR} AND IS_DIRECTORY "$ENV{ACL_ROOT_DIR}")
-        GIT_PROGRESS TRUE
+            message(STATUS "Using ACL from specified source directory: $ENV{ACL_ROOT_DIR}")
-        GIT_SHALLOW TRUE
+        else()
-    )
+            message(STATUS "Downloading Arm Compute Library (ACL) from GitHub")
-
+            FetchContent_Populate(arm_compute
-    if(USE_ACL)
+                SUBBUILD_DIR "${FETCHCONTENT_BASE_DIR}/arm_compute-subbuild"
-        find_library(ARM_COMPUTE_LIBRARY NAMES arm_compute PATHS $ENV{ACL_ROOT_DIR}/build/)
+                SOURCE_DIR   "${FETCHCONTENT_BASE_DIR}/arm_compute-src"
-        if(NOT ARM_COMPUTE_LIBRARY)
+                GIT_REPOSITORY https://github.com/ARM-software/ComputeLibrary.git
-            message(FATAL_ERROR "Could not find ARM Compute Library: please set ACL_ROOT_DIR")
+                GIT_TAG        v52.2.0
+                GIT_SHALLOW    TRUE
+                GIT_PROGRESS   TRUE
+            )
+            set(ENV{ACL_ROOT_DIR} "${arm_compute_SOURCE_DIR}")
         endif()
+
+        # Build ACL with scons
+        include(ProcessorCount)
+        ProcessorCount(_NPROC)
+        set(_scons_cmd
+        scons -j${_NPROC}
+            Werror=0 debug=0 neon=1 examples=0 embed_kernels=0 os=linux
+            arch=armv8.2-a build=native benchmark_examples=0 fixed_format_kernels=1
+            multi_isa=1 openmp=1 cppthreads=0
+        )
+
+        # locate PyTorch's libgomp (e.g. site-packages/torch.libs/libgomp-947d5fa1.so.1.0.0)
+        # and create a local shim dir with it
+        include("${CMAKE_CURRENT_LIST_DIR}/utils.cmake")
+        vllm_prepare_torch_gomp_shim(VLLM_TORCH_GOMP_SHIM_DIR)
+
+        if(NOT VLLM_TORCH_GOMP_SHIM_DIR STREQUAL "")
+            list(APPEND _scons_cmd extra_link_flags=-L${VLLM_TORCH_GOMP_SHIM_DIR})
+        endif()
+
+        execute_process(
+            COMMAND ${_scons_cmd}
+            WORKING_DIRECTORY "$ENV{ACL_ROOT_DIR}"
+            RESULT_VARIABLE _acl_rc
+        )
+        if(NOT _acl_rc EQUAL 0)
+            message(FATAL_ERROR "ACL SCons build failed (exit ${_acl_rc}).")
+        endif()
+
         set(ONEDNN_AARCH64_USE_ACL "ON")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-rpath,$ENV{ACL_ROOT_DIR}/build/")
         add_compile_definitions(VLLM_USE_ACL)
     endif()
 
+    set(FETCHCONTENT_SOURCE_DIR_ONEDNN "$ENV{FETCHCONTENT_SOURCE_DIR_ONEDNN}" CACHE PATH "Path to a local oneDNN source directory.")
+
+    if(FETCHCONTENT_SOURCE_DIR_ONEDNN)
+        message(STATUS "Using oneDNN from specified source directory: ${FETCHCONTENT_SOURCE_DIR_ONEDNN}")
+        FetchContent_Declare(
+            oneDNN
+            SOURCE_DIR ${FETCHCONTENT_SOURCE_DIR_ONEDNN}
+        )
+    else()
+        message(STATUS "Downloading oneDNN from GitHub")
+        FetchContent_Declare(
+            oneDNN
+            GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git
+            GIT_TAG v3.9
+            GIT_PROGRESS TRUE
+            GIT_SHALLOW TRUE
+        )
+    endif()
+
     set(ONEDNN_LIBRARY_TYPE "STATIC")
     set(ONEDNN_BUILD_DOC "OFF")
     set(ONEDNN_BUILD_EXAMPLES "OFF")
@@ -227,7 +272,7 @@ if ((AVX512_FOUND AND NOT AVX512_DISABLED) OR (ASIMD_FOUND AND NOT APPLE_SILICON
     set(ONEDNN_ENABLE_ITT_TASKS "OFF")
     set(ONEDNN_ENABLE_MAX_CPU_ISA "OFF")
     set(ONEDNN_ENABLE_CPU_ISA_HINTS "OFF")
-    set(ONEDNN_VERBOSE "ON")
+    set(ONEDNN_VERBOSE "OFF")
     set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
 
     FetchContent_MakeAvailable(oneDNN)
@@ -309,4 +354,4 @@ define_gpu_extension_target(
     WITH_SOABI
 )
 
-message(STATUS "Enabling C extension.")
+message(STATUS "Enabling C extension.")

cmake/external_projects/flashmla.cmake

@@ -19,7 +19,7 @@ else()
   FetchContent_Declare(
         flashmla
         GIT_REPOSITORY https://github.com/vllm-project/FlashMLA
-        GIT_TAG 5f65b85703c7ed75fda01e06495077caad207c3f
+        GIT_TAG 46d64a8ebef03fa50b4ae74937276a5c940e3f95
         GIT_PROGRESS TRUE
         CONFIGURE_COMMAND ""
         BUILD_COMMAND ""
@@ -66,6 +66,7 @@ if(FLASH_MLA_ARCHS)
         ${flashmla_SOURCE_DIR}/csrc/extension/torch_api.cpp
         ${flashmla_SOURCE_DIR}/csrc/extension/sm90/dense_fp8/pybind.cpp
         ${flashmla_SOURCE_DIR}/csrc/extension/sm90/dense_fp8/flash_fwd_mla_fp8_sm90.cu
+        ${flashmla_SOURCE_DIR}/csrc/extension/sm90/dense_fp8/flash_fwd_mla_metadata.cu
     )
 
     set(FlashMLA_INCLUDES

cmake/external_projects/qutlass.cmake

@@ -0,0 +1,97 @@
+include(FetchContent)
+
+set(CUTLASS_INCLUDE_DIR "${CUTLASS_INCLUDE_DIR}" CACHE PATH "Path to CUTLASS include/ directory")
+
+if(DEFINED ENV{QUTLASS_SRC_DIR})
+  set(QUTLASS_SRC_DIR $ENV{QUTLASS_SRC_DIR})
+endif()
+
+if(QUTLASS_SRC_DIR)
+  FetchContent_Declare(
+    qutlass
+    SOURCE_DIR ${QUTLASS_SRC_DIR}
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+  )
+else()
+  FetchContent_Declare(
+    qutlass
+    GIT_REPOSITORY https://github.com/IST-DASLab/qutlass.git
+    GIT_TAG 830d2c4537c7396e14a02a46fbddd18b5d107c65
+    GIT_PROGRESS TRUE
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+  )
+endif()
+
+FetchContent_Populate(qutlass)
+
+if(NOT qutlass_SOURCE_DIR)
+  message(FATAL_ERROR "[QUTLASS] source directory could not be resolved.")
+endif()
+message(STATUS "[QUTLASS] QuTLASS is available at ${qutlass_SOURCE_DIR}")
+
+cuda_archs_loose_intersection(QUTLASS_ARCHS "12.0a;10.0a" "${CUDA_ARCHS}")
+if(${CMAKE_CUDA_COMPILER_VERSION} VERSION_GREATER 12.8 AND QUTLASS_ARCHS)
+
+  if(QUTLASS_ARCHS MATCHES "10\\.0a")
+    set(QUTLASS_TARGET_CC 100)
+  elseif(QUTLASS_ARCHS MATCHES "12\\.0a")
+    set(QUTLASS_TARGET_CC 120)
+  else()
+    message(FATAL_ERROR "[QUTLASS] internal error parsing CUDA_ARCHS='${QUTLASS_ARCHS}'.")
+  endif()
+
+  set(QUTLASS_SOURCES
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/bindings.cpp
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/gemm.cu
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/gemm_ada.cu
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_mx.cu
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_nv.cu
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_mx_sm100.cu
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/fused_quantize_nv_sm100.cu
+  )
+
+  set(QUTLASS_INCLUDES
+    ${qutlass_SOURCE_DIR}
+    ${qutlass_SOURCE_DIR}/qutlass
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/include
+    ${qutlass_SOURCE_DIR}/qutlass/csrc/include/cutlass_extensions
+  )
+
+  if(CUTLASS_INCLUDE_DIR AND EXISTS "${CUTLASS_INCLUDE_DIR}/cutlass/cutlass.h")
+    list(APPEND QUTLASS_INCLUDES "${CUTLASS_INCLUDE_DIR}")
+  elseif(EXISTS "${qutlass_SOURCE_DIR}/qutlass/third_party/cutlass/include/cutlass/cutlass.h")
+    list(APPEND QUTLASS_INCLUDES "${qutlass_SOURCE_DIR}/qutlass/third_party/cutlass/include")
+    message(STATUS "[QUTLASS] Using QuTLASS vendored CUTLASS headers (no vLLM CUTLASS detected).")
+  else()
+    message(FATAL_ERROR "[QUTLASS] CUTLASS headers not found. "
+                        "Set -DCUTLASS_INCLUDE_DIR=/path/to/cutlass/include")
+  endif()
+
+  set_gencode_flags_for_srcs(
+    SRCS "${QUTLASS_SOURCES}"
+    CUDA_ARCHS "${QUTLASS_ARCHS}"
+  )
+
+  target_sources(_C PRIVATE ${QUTLASS_SOURCES})
+  target_include_directories(_C PRIVATE ${QUTLASS_INCLUDES})
+  target_compile_definitions(_C PRIVATE
+    QUTLASS_DISABLE_PYBIND=1
+    TARGET_CUDA_ARCH=${QUTLASS_TARGET_CC}
+  )
+
+  set_property(SOURCE ${QUTLASS_SOURCES} APPEND PROPERTY COMPILE_OPTIONS
+    $<$<COMPILE_LANGUAGE:CUDA>:--expt-relaxed-constexpr --use_fast_math -O3>
+  )
+
+else()
+  if("${CMAKE_CUDA_COMPILER_VERSION}" VERSION_LESS "12.8")
+    message(STATUS
+      "[QUTLASS] Skipping build: CUDA 12.8 or newer is required (found ${CMAKE_CUDA_COMPILER_VERSION}).")
+  else()
+    message(STATUS
+      "[QUTLASS] Skipping build: no supported arch (12.0a / 10.0a) found in "
+      "CUDA_ARCHS='${CUDA_ARCHS}'.")
+  endif()
+endif()

cmake/external_projects/vllm_flash_attn.cmake

@@ -38,7 +38,7 @@ else()
   FetchContent_Declare(
           vllm-flash-attn
           GIT_REPOSITORY https://github.com/vllm-project/flash-attention.git
-          GIT_TAG 4695e6bed5366c41e28c06cd86170166e4f43d00
+          GIT_TAG a893712401d70362fbb299cd9c4b3476e8e9ed54
           GIT_PROGRESS TRUE
           # Don't share the vllm-flash-attn build between build types
           BINARY_DIR ${CMAKE_BINARY_DIR}/vllm-flash-attn

cmake/utils.cmake

@@ -129,6 +129,44 @@ function (get_torch_gpu_compiler_flags OUT_GPU_FLAGS GPU_LANG)
   set(${OUT_GPU_FLAGS} ${GPU_FLAGS} PARENT_SCOPE)
 endfunction()
 
+# Find libgomp that gets shipped with PyTorch wheel and create a shim dir with:
+#   libgomp.so    -> libgomp-<hash>.so...
+#   libgomp.so.1  -> libgomp-<hash>.so...
+# OUTPUT: TORCH_GOMP_SHIM_DIR  ("" if not found)
+function(vllm_prepare_torch_gomp_shim TORCH_GOMP_SHIM_DIR)
+  set(${TORCH_GOMP_SHIM_DIR} "" PARENT_SCOPE)
+
+  # Use run_python to locate vendored libgomp; never throw on failure.
+  run_python(_VLLM_TORCH_GOMP_PATH
+    "
+import os, glob
+try:
+  import torch
+  torch_pkg = os.path.dirname(torch.__file__)
+  site_root = os.path.dirname(torch_pkg)
+  torch_libs = os.path.join(site_root, 'torch.libs')
+  print(glob.glob(os.path.join(torch_libs, 'libgomp-*.so*'))[0])
+except:
+  print('')
+"
+    "failed to probe torch.libs for libgomp")
+
+  if(_VLLM_TORCH_GOMP_PATH STREQUAL "" OR NOT EXISTS "${_VLLM_TORCH_GOMP_PATH}")
+    return()
+  endif()
+
+  # Create shim under the build tree
+  set(_shim "${CMAKE_BINARY_DIR}/gomp_shim")
+  file(MAKE_DIRECTORY "${_shim}")
+
+  execute_process(COMMAND ${CMAKE_COMMAND} -E rm -f "${_shim}/libgomp.so")
+  execute_process(COMMAND ${CMAKE_COMMAND} -E rm -f "${_shim}/libgomp.so.1")
+  execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${_VLLM_TORCH_GOMP_PATH}" "${_shim}/libgomp.so")
+  execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${_VLLM_TORCH_GOMP_PATH}" "${_shim}/libgomp.so.1")
+
+  set(${TORCH_GOMP_SHIM_DIR} "${_shim}" PARENT_SCOPE)
+endfunction()
+
 # Macro for converting a `gencode` version number to a cmake version number.
 macro(string_to_ver OUT_VER IN_STR)
   string(REGEX REPLACE "\([0-9]+\)\([0-9]\)" "\\1.\\2" ${OUT_VER} ${IN_STR})

codecov.yml

@@ -0,0 +1,12 @@
+codecov:
+  require_ci_to_pass: false
+
+fixes:
+  # Map source code paths to repository root paths
+  # Wildcards match any Python version (python3.*)
+  - "/vllm-workspace/src/vllm/::vllm/"
+  - "/vllm-workspace/vllm/::vllm/"
+  - "/usr/local/lib/python3.*/dist-packages/vllm/::vllm/"
+  - "/usr/local/lib/python3.*/site-packages/vllm/::vllm/"
+  - "/usr/lib/python3.*/dist-packages/vllm/::vllm/"
+  - "/usr/lib/python3.*/site-packages/vllm/::vllm/"

csrc/attention/attention_kernels.cuh

@@ -28,10 +28,10 @@
 
 #ifdef USE_ROCM
   #include <hip/hip_bf16.h>
-  #include "../quantization/fp8/amd/quant_utils.cuh"
+  #include "../quantization/w8a8/fp8/amd/quant_utils.cuh"
 typedef __hip_bfloat16 __nv_bfloat16;
 #else
-  #include "../quantization/fp8/nvidia/quant_utils.cuh"
+  #include "../quantization/w8a8/fp8/nvidia/quant_utils.cuh"
 #endif
 
 #define MAX(a, b) ((a) > (b) ? (a) : (b))

csrc/attention/mla/cutlass_sm100_mla/device/sm100_mla.hpp

@@ -125,32 +125,37 @@ public:
   }
 
   static void set_split_kv (KernelArguments& args) {
-    // printf("set_split_kv start");
     if (args.split_kv >= 1) return;
     auto [H, K, D, B] = args.problem_shape;
-    // std::cout << H << " " << K << " " << D << " " << B << "\n";      
     int sm_count = args.hw_info.sm_count;
-    // printf("    sm_count = %d\n", sm_count);
+    float seq_length_k = static_cast<float>(K) / 1024.0f;
-    int max_splits = ceil_div(K, 128);
+    int max_splits = 1;
-    max_splits = min(16, max_splits);
 
-    // TODO: This avoids a hang when the batch size larger than 1 and 
+    if (B <= 4 && seq_length_k >= 16) {
-    // there is more than 1 kv_splits. 
+      max_splits = 16;
-    // Discuss with NVIDIA how this can be fixed.
-    if (B > 1) {
-      max_splits = min(1, max_splits);
     }
-    
+    else if (B <= 8 && seq_length_k >= 4) {
-    // printf("    max_splits = %d\n", max_splits);
+      max_splits = 8;
+    }
+    else if ((B <= 16 && seq_length_k >= 8) ||
+             (B == 48 && seq_length_k >= 32)) {
+      max_splits = 4;
+    }
+    else if ((B <= 32 && seq_length_k >= 16) ||
+             (B == 96 && seq_length_k >= 16)) {
+      max_splits = 2;
+    }
+    else {
+      max_splits = 1;
+    }
+
+    // Wave-aware scheduling: ensure integer number of waves in K dimension
     int sms_per_batch = max(1, sm_count / B);
-    // printf("    sms_per_batch = %d\n", sms_per_batch);
     int split_heur = min(max_splits, sms_per_batch);
     int waves = ceil_div(B * split_heur, sm_count);
     int k_waves = ceil_div(max_splits, split_heur);
     int split_wave_aware = ceil_div(max_splits, k_waves);
     args.split_kv = split_wave_aware;
-    // printf("    args.split_kv = %d\n", args.split_kv);
-
   }
 
   /// Determines whether the GEMM can execute the given problem.

csrc/cache.h

@@ -64,3 +64,11 @@ void indexer_k_quant_and_cache(
     torch::Tensor& slot_mapping,  // [num_tokens]
     int64_t quant_block_size,     // quantization block size
     const std::string& scale_fmt);
+
+// Extract function to gather quantized K cache
+void cp_gather_indexer_k_quant_cache(
+    const torch::Tensor& kv_cache,  // [num_blocks, block_size, cache_stride]
+    torch::Tensor& dst_k,           // [num_tokens, head_dim]
+    torch::Tensor& dst_scale,  // [num_tokens, head_dim / quant_block_size * 4]
+    const torch::Tensor& block_table,   // [batch_size, num_blocks]
+    const torch::Tensor& cu_seq_lens);  // [batch_size + 1]

csrc/cache_kernels.cu

@@ -9,9 +9,9 @@
 #include "quantization/vectorization_utils.cuh"
 
 #ifdef USE_ROCM
-  #include "quantization/fp8/amd/quant_utils.cuh"
+  #include "quantization/w8a8/fp8/amd/quant_utils.cuh"
 #else
-  #include "quantization/fp8/nvidia/quant_utils.cuh"
+  #include "quantization/w8a8/fp8/nvidia/quant_utils.cuh"
 #endif
 
 #include <algorithm>
@@ -572,6 +572,70 @@ __global__ void indexer_k_quant_and_cache_kernel(
   }
 }
 
+template <int BLOCK_Y_SIZE>
+__global__ void cp_gather_indexer_k_quant_cache_kernel(
+    const char* __restrict__ kv_cache,  // [num_blocks, block_size,
+                                        // cache_stride]
+    char* __restrict__ dst_k,           // [num_tokens, head_dim]
+    char* __restrict__ dst_scale,  // [num_tokens, head_dim / quant_block_size *
+                                   // 4]
+    const int* __restrict__ block_table,  // [batch_size, num_blocks]
+    const int* __restrict__ cu_seq_lens,  // [batch_size + 1]
+    const int batch_size,                 // batch size
+    const int64_t token_stride,           // stride for each token in dst_k
+    const int64_t head_dim,               // dimension of each head
+    const int64_t block_stride,           // stride for each block in kv_cache
+    const int64_t cache_token_stride,     // stride for each token in kv_cache
+    const int64_t cache_block_size,  // num_tokens for each block in kv_cache
+    const int num_blocks,            // number of blocks
+    const int num_tokens,            // number of tokens
+    const int quant_block_size       // quantization block size
+) {
+  constexpr int VEC_SIZE = sizeof(float4) / sizeof(char);
+  const int token_idx = blockIdx.x * blockDim.y + threadIdx.y;
+  const int head_idx = (blockIdx.y * blockDim.x + threadIdx.x) * VEC_SIZE;
+  // Find batch index within a block
+  __shared__ int batch_idx[BLOCK_Y_SIZE];
+  for (int iter = 0; iter < cuda_utils::ceil_div(batch_size, int(blockDim.x));
+       iter++) {
+    int tid = iter * blockDim.x + threadIdx.x;
+    if (tid < batch_size) {
+      const int seq_start = cu_seq_lens[tid];
+      const int seq_end = cu_seq_lens[tid + 1];
+      if (token_idx >= seq_start && token_idx < seq_end) {
+        batch_idx[threadIdx.y] = tid;
+      }
+    }
+  }
+
+#ifndef USE_ROCM
+  __syncwarp();
+#endif
+
+  if (head_idx >= head_dim || token_idx >= num_tokens) {
+    return;
+  }
+  const int inbatch_seq_idx = token_idx - cu_seq_lens[batch_idx[threadIdx.y]];
+  const int block_idx = block_table[batch_idx[threadIdx.y] * num_blocks +
+                                    inbatch_seq_idx / cache_block_size];
+  const int64_t src_block_offset = block_idx * block_stride;
+  const int64_t cache_inblock_offset =
+      (inbatch_seq_idx % cache_block_size) * head_dim + head_idx;
+  const int64_t src_inblock_offset = src_block_offset + cache_inblock_offset;
+  const int64_t dst_inblock_offset = token_idx * token_stride + head_idx;
+
+  reinterpret_cast<float4*>(dst_k)[dst_inblock_offset / VEC_SIZE] =
+      reinterpret_cast<const float4*>(kv_cache)[src_inblock_offset / VEC_SIZE];
+  ;
+  if (threadIdx.x == 0) {
+    const int64_t src_scale_offset =
+        src_block_offset + cache_block_size * head_dim +
+        cache_inblock_offset * 4 / quant_block_size;
+    reinterpret_cast<float*>(dst_scale)[dst_inblock_offset / quant_block_size] =
+        reinterpret_cast<const float*>(kv_cache)[src_scale_offset / 4];
+  }
+}
+
 }  // namespace vllm
 
 // KV_T is the data type of key and value tensors.
@@ -1173,3 +1237,59 @@ void indexer_k_quant_and_cache(
   DISPATCH_BY_KV_CACHE_DTYPE(k.dtype(), "fp8_e4m3",
                              CALL_INDEXER_K_QUANT_AND_CACHE);
 }
+
+// Macro to dispatch the kernel based on the data amount.
+#define CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(BLOCK_Y_SIZE)                  \
+  vllm::cp_gather_indexer_k_quant_cache_kernel<BLOCK_Y_SIZE>                \
+      <<<dim3((num_tokens + BLOCK_Y_SIZE - 1) / BLOCK_Y_SIZE,               \
+              (head_dim + 8 * vec_size - 1) / (8 * vec_size)),              \
+         dim3(8, BLOCK_Y_SIZE), 0, stream>>>(                               \
+          reinterpret_cast<char*>(kv_cache.data_ptr()),                     \
+          reinterpret_cast<char*>(dst_k.data_ptr()),                        \
+          reinterpret_cast<char*>(dst_scale.data_ptr()),                    \
+          block_table.data_ptr<int32_t>(), cu_seq_lens.data_ptr<int32_t>(), \
+          batch_size, dst_k.stride(0), dst_k.size(1), kv_cache.stride(0),   \
+          kv_cache.stride(1), kv_cache.size(1), block_table.size(1),        \
+          num_tokens, quant_block_size);
+
+void cp_gather_indexer_k_quant_cache(
+    const torch::Tensor& kv_cache,  // [num_blocks, block_size, cache_stride]
+    torch::Tensor& dst_k,           // [num_tokens, head_dim]
+    torch::Tensor& dst_scale,  // [num_tokens, head_dim / quant_block_size * 4]
+    const torch::Tensor& block_table,  // [batch_size, num_blocks]
+    const torch::Tensor& cu_seq_lens   // [batch_size + 1]
+) {
+  int batch_size = block_table.size(0);
+  int num_tokens = dst_k.size(0);
+  int head_dim = dst_k.size(1);
+  int quant_block_size = head_dim * 4 / dst_scale.size(1);
+
+  TORCH_CHECK(kv_cache.device() == dst_k.device(),
+              "kv_cache and dst_k must be on the same device");
+  TORCH_CHECK(kv_cache.device() == dst_scale.device(),
+              "kv_cache and dst_scale must be on the same device");
+  TORCH_CHECK(kv_cache.device() == block_table.device(),
+              "kv_cache and block_table must be on the same device");
+  TORCH_CHECK(kv_cache.device() == cu_seq_lens.device(),
+              "kv_cache and cu_seq_lens must be on the same device");
+  TORCH_CHECK(head_dim % quant_block_size == 0,
+              "head_dim must be divisible by quant_block_size");
+
+  constexpr int vec_size = 16;
+  const at::cuda::OptionalCUDAGuard device_guard(device_of(kv_cache));
+  const cudaStream_t stream = at::cuda::getCurrentCUDAStream();
+
+  if (num_tokens < 32) {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(1);
+  } else if (num_tokens < 64) {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(2);
+  } else if (num_tokens < 128) {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(4);
+  } else if (num_tokens < 256) {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(8);
+  } else if (num_tokens < 512) {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(16);
+  } else {
+    CALL_CP_GATHER_INDEXER_K_QUANT_CACHE(32);
+  }
+}

csrc/core/batch_invariant.hpp

@@ -5,12 +5,15 @@
 
 namespace vllm {
 
-// vllm_kernel_override_batch_invariant(); returns true
+// vllm_is_batch_invariant(); returns true
-// if env VLLM_KERNEL_OVERRIDE_BATCH_INVARIANT=1
+// if env VLLM_BATCH_INVARIANT=1
-inline bool vllm_kernel_override_batch_invariant() {
+inline bool vllm_is_batch_invariant() {
-  std::string env_key = "VLLM_KERNEL_OVERRIDE_BATCH_INVARIANT";
+  static bool cached = []() {
-  const char* val = std::getenv(env_key.c_str());
+    std::string env_key = "VLLM_BATCH_INVARIANT";
-  return (val && std::atoi(val) != 0) ? 1 : 0;
+    const char* val = std::getenv(env_key.c_str());
+    return (val && std::atoi(val) != 0) ? 1 : 0;
+  }();
+  return cached;
 }
 
 }  // namespace vllm

csrc/cpu/dnnl_helper.cpp

@@ -187,7 +187,8 @@ template <>
 struct hash<MatMulPrimitiveHandler::ClassMatmulCacheKey> {
   size_t operator()(
       const MatMulPrimitiveHandler::ClassMatmulCacheKey& val) const {
-    return hash<dnnl_dim_t>()(val.b_n_size) ^ hash<dnnl_dim_t>()(val.b_k_size);
+    return hash<dnnl_dim_t>()(val.b_n_size) ^ hash<dnnl_dim_t>()(val.b_k_size) ^
+           hash<int>()(static_cast<int>(val.b_type));
   }
 };
 
@@ -216,7 +217,8 @@ bool operator==(const W8A8MatMulPrimitiveHandler::MSizeCacheKey& l,
 
 bool operator==(const MatMulPrimitiveHandler::ClassMatmulCacheKey& l,
                 const MatMulPrimitiveHandler::ClassMatmulCacheKey& r) {
-  return l.b_n_size == r.b_n_size && l.b_k_size == r.b_k_size;
+  return l.b_n_size == r.b_n_size && l.b_k_size == r.b_k_size &&
+         l.b_type == r.b_type;
 }
 
 bool operator==(const MatMulPrimitiveHandler::MSizeCacheKey& l,
@@ -493,8 +495,10 @@ void MatMulPrimitiveHandler::execute(ExecArgs& args) {
 dnnl::matmul MatMulPrimitiveHandler::get_matmul_cache(
     const MSizeCacheKey& key) {
   if (m_size_cache_.get() == nullptr) {
-    ClassMatmulCacheKey key = {.b_n_size = b_n_size_, .b_k_size = b_k_size_};
+    ClassMatmulCacheKey class_key = {
-    m_size_cache_ = get_matul_class_primitive_cache(key, primitive_cache_size_);
+        .b_n_size = b_n_size_, .b_k_size = b_k_size_, .b_type = b_type_};
+    m_size_cache_ =
+        get_matul_class_primitive_cache(class_key, primitive_cache_size_);
   }
   return m_size_cache_->get_or_create(key, [&]() {
     dnnl::matmul::primitive_desc desc = this->create_primitive_desc(key, false);

csrc/cpu/dnnl_helper.h

@@ -199,6 +199,7 @@ class MatMulPrimitiveHandler : public DNNLMatMulPrimitiveHandler {
   struct ClassMatmulCacheKey {
     dnnl_dim_t b_n_size;
     dnnl_dim_t b_k_size;
+    dnnl::memory::data_type b_type;
 
     friend bool operator==(const ClassMatmulCacheKey& l,
                            const ClassMatmulCacheKey& r);