389e493055
* CUTLASS 3.8 Release
* update
* Update README.md
* Revert "Update README.md"
This reverts commit b353e36fe8.
* update
* update
---------
Co-authored-by: Haicheng Wu <57973641+hwu36@users.noreply.github.com>
Co-authored-by: Haicheng Wu <haichengw@nvidia.com>
117 lines
4.2 KiB
C++
117 lines
4.2 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2023 - 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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#pragma once
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/// @file copy_traits_sm90_tma_swizzle.hpp
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/// @brief Functions for converting swizzle layout to TMA descriptor
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#if !defined(__CUDACC_RTC__)
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#include <cuda.h>
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#endif
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#include <cute/arch/copy_sm90_desc.hpp>
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#include <cute/swizzle_layout.hpp>
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namespace cute::detail {
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template <int B, int M, int S>
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CUTE_HOST_DEVICE constexpr
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TMA::SmemSwizzleBits
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get_tma_swizzle_bits(Swizzle<B,M,S>)
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{
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if constexpr (M == 4) {
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switch (B) {
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default: static_assert(0 <= B && B <= 3, "Expected B = 0,1,2, or 3 when M == 4. Unsupported layout swizzle.");
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case 3: return TMA::SmemSwizzleBits::B128;
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case 2: return TMA::SmemSwizzleBits::B64;
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case 1: return TMA::SmemSwizzleBits::B32;
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case 0: return TMA::SmemSwizzleBits::DISABLE;
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}
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} else
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if constexpr (M == 5 || M == 6) {
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static_assert(B == 2, "Expected B = 2 when M == 5 or 6. Unsupported layout swizzle.");
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// S-condition as well?
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return TMA::SmemSwizzleBits::B128;
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} else
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{
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static_assert(M < 0, "Unsupported layout swizzle.");
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}
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}
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template <class Layout>
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TMA::SmemSwizzleBits
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get_tma_swizzle_bits(Layout const& layout)
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{
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return get_tma_swizzle_bits(get_swizzle_portion(layout));
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}
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template <int B, int M, int S>
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CUTE_HOST_DEVICE constexpr
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TMA::SmemSwizzleBase
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get_tma_swizzle_base(Swizzle<B,M,S>)
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{
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if constexpr (M == 4) {
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static_assert(0 <= B && B <= 3, "Expected B = 0,1,2, or 3 when M == 4. Unsupported layout swizzle.");
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static_assert(S == 3, "Expected S = 3 when M == 4. Unsupported layout swizzle.");
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return TMA::SmemSwizzleBase::SWIZZLE_BASE_16B;
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}
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else if constexpr (M == 5) {
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static_assert(B == 2, "Expected B = 2 when M == 5. Unsupported layout swizzle.");
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static_assert(S == 2, "Expected S = 2 when M == 5. Unsupported layout swizzle.");
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return TMA::SmemSwizzleBase::SWIZZLE_BASE_32B;
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} else if constexpr (M == 6) {
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static_assert(B == 2, "Expected B = 2 when M == 5. Unsupported layout swizzle.");
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return TMA::SmemSwizzleBase::SWIZZLE_BASE_64B;
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}
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#if 1
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else {
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static_assert(4 <= M && M <= 6, "Expected 128b=16B=(2^4)B to 512b=64B=(2^6)B base swizzle.");
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}
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#else
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else {
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static_assert(M == 4, "Expected 128b=16B=(2^4)B base swizzle.");
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}
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#endif
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}
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template <class Layout>
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TMA::SmemSwizzleBase
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get_tma_swizzle_base(Layout const& layout)
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{
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return get_tma_swizzle_base(get_swizzle_portion(layout));
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}
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} // namespace cute::detail
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