cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ > Struct Template Reference

`#include <default_mma_core_simt.h>`

## Public Types

using | Shape = Shape_
using | WarpShape = WarpShape_
using | InstructionShape = GemmShape< 1, 1, 1 >
using | ElementA = ElementA_
using | LayoutA = layout::ColumnMajor
using | ElementB = ElementB_
using | LayoutB = layout::ColumnMajor
using | ElementC = ElementC_
using | LayoutC = LayoutC_
using | OperatorClass = arch::OpClassSimt
using | Operator = Operator_
| Default Operator. More...
using | WarpCount = GemmShape< Shape::kM/WarpShape::kM, Shape::kN/WarpShape::kN, PartitionsK >
| Number of warps present. More...
using | SmemLayoutA = layout::ColumnMajor
using | SmemLayoutB = layout::RowMajor
using | IteratorThreadMapA = transform::PitchLinearStripminedThreadMap< layout::PitchLinearShape< Shape::kM, Shape::kK >, kThreads, kElementsPerAccess >
| ThreadMap of iterator A. More...
using | SmemIteratorA = transform::threadblock::RegularTileIterator< MatrixShape< Shape::kM, Shape::kK >, ElementA, SmemLayoutA, 1, IteratorThreadMapA >
| Shared memory iterator to A operand. More...
using | IteratorThreadMapB = transform::PitchLinearStripminedThreadMap< layout::PitchLinearShape< Shape::kK, Shape::kN >, kThreads, kElementsPerAccess >
| ThreadMap of iterator B. More...
using | SmemThreadMapB = transform::TransposePitchLinearThreadMapSimt< IteratorThreadMapB >
| Transpose the ThreadMap of iterator A. More...
using | SmemIteratorB = transform::threadblock::RegularTileIterator< MatrixShape< Shape::kK, Shape::kN >, ElementB, SmemLayoutB, 0, SmemThreadMapB >
| Shared memory iterator to B operand. More...
using | LaneMmaShape = cutlass::gemm::GemmShape< LaneM, LaneN, 1 >
using | Policy = cutlass::gemm::warp::MmaSimtPolicy< cutlass::MatrixShape< WarpNumThreadsM, WarpNumThreadsN >, cutlass::layout::RowMajorInterleaved< LaneLayout >, LaneMmaShape >
using | MmaWarpSimt = cutlass::gemm::warp::MmaSimt< WarpShape, ElementA, SmemLayoutA, ElementB, SmemLayoutB, ElementC, LayoutC, Policy >
using | MmaPolicy = MmaPolicy< MmaWarpSimt, MatrixShape< 0, 0 >, MatrixShape< 0, kPaddingN >, WarpCount::kK >
| Policy used to define MmaPipelined. More...

## Static Public Attributes

static int const | PartitionsK = Shape::kK / WarpShape::kK
static int const | kWarpSize = warp::WarpSize<arch::OpClassSimt>::value
| Number of threads per warp. More...
static int const | kThreads = WarpCount::kCount * kWarpSize
| Number of threads total. More...
static int const | kElementsPerAccess = 1
static const int | WarpNumThreadsM = detail::simt_get_warp_threads_m<WarpShape>()
static const int | WarpNumThreadsN = kWarpSize / WarpNumThreadsM
static const int | ThreadTileM = WarpShape::kM / WarpNumThreadsM
static const int | ThreadTileN = WarpShape::kN / WarpNumThreadsN
static const int | LaneLayout = ThreadTileM > 4 && ThreadTileN > 4 ? 2 : 1
static const int | numElementsA = 128 / sizeof_bits<ElementA>::value
static const int | numElementsB = 128 / sizeof_bits<ElementB>::value
static const int | LaneM = cutlass::const_min(numElementsA, ThreadTileM)
static const int | LaneN = cutlass::const_min(numElementsB, ThreadTileN)
static int const | kPaddingN = detail::simt_transpose_padding(kWarpSize, Shape::kK, sizeof_bits<ElementB>::value)

## Detailed Description

### template<typename Shape_, typename WarpShape_, typename ElementA_, typename ElementB_, typename ElementC_, typename LayoutC_, typename Operator_>
struct cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >

Partial specialization:

A: column-major B: column-major Operator: simt class

This uses the default warp-level operator given tile sizes

## Member Typedef Documentation

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::ElementA = ElementA_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::ElementB = ElementB_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::ElementC = ElementC_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::InstructionShape = GemmShape<1, 1, 1>

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::IteratorThreadMapA = transform::PitchLinearStripminedThreadMap< layout::PitchLinearShape<Shape::kM, Shape::kK>, kThreads, kElementsPerAccess >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::IteratorThreadMapB = transform::PitchLinearStripminedThreadMap< layout::PitchLinearShape<Shape::kK, Shape::kN>, kThreads, kElementsPerAccess >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LaneMmaShape = cutlass::gemm::GemmShape< LaneM, LaneN, 1>

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LayoutA = layout::ColumnMajor

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LayoutB = layout::ColumnMajor

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LayoutC = LayoutC_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::MmaPolicy = MmaPolicy< MmaWarpSimt, MatrixShape<0, 0>, MatrixShape<0, kPaddingN>, WarpCount::kK >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::MmaWarpSimt = cutlass::gemm::warp::MmaSimt< WarpShape, ElementA, SmemLayoutA, ElementB, SmemLayoutB, ElementC, LayoutC, Policy >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::Operator = Operator_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::OperatorClass = arch::OpClassSimt

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::Policy = cutlass::gemm::warp::MmaSimtPolicy< cutlass::MatrixShape<WarpNumThreadsM, WarpNumThreadsN>, cutlass::layout::RowMajorInterleaved<LaneLayout>, LaneMmaShape >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::Shape = Shape_

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::SmemIteratorA = transform::threadblock::RegularTileIterator< MatrixShape<Shape::kM, Shape::kK>, ElementA, SmemLayoutA, 1, IteratorThreadMapA >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::SmemIteratorB = transform::threadblock::RegularTileIterator< MatrixShape<Shape::kK, Shape::kN>, ElementB, SmemLayoutB, 0, SmemThreadMapB >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::SmemLayoutA = layout::ColumnMajor

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::SmemLayoutB = layout::RowMajor

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::SmemThreadMapB = transform::TransposePitchLinearThreadMapSimt<IteratorThreadMapB>

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::WarpCount = GemmShape< Shape::kM / WarpShape::kM, Shape::kN / WarpShape::kN, PartitionsK >

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

using cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::WarpShape = WarpShape_

## Member Data Documentation

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

int const cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::kElementsPerAccess = 1

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

int const cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::kPaddingN = detail::simt_transpose_padding(kWarpSize, Shape::kK, sizeof_bits<ElementB>::value)

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

int const cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::kThreads = WarpCount::kCount * kWarpSize

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

int const cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::kWarpSize = warp::WarpSize<arch::OpClassSimt>::value

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LaneLayout = ThreadTileM > 4 && ThreadTileN > 4 ? 2 : 1

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LaneM = cutlass::const_min(numElementsA, ThreadTileM)

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::LaneN = cutlass::const_min(numElementsB, ThreadTileN)

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::numElementsA = 128 / sizeof_bits<ElementA>::value

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::numElementsB = 128 / sizeof_bits<ElementB>::value

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

int const cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::PartitionsK = Shape::kK / WarpShape::kK

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::ThreadTileM = WarpShape::kM / WarpNumThreadsM

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::ThreadTileN = WarpShape::kN / WarpNumThreadsN

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::WarpNumThreadsM = detail::simt_get_warp_threads_m<WarpShape>()

static

template<typename Shape_ , typename WarpShape_ , typename ElementA_ , typename ElementB_ , typename ElementC_ , typename LayoutC_ , typename Operator_ >

const int cutlass::gemm::threadblock::DefaultMmaCore< Shape_, WarpShape_, GemmShape< 1, 1, 1 >, ElementA_, layout::ColumnMajor, ElementB_, layout::ColumnMajor, ElementC_, LayoutC_, arch::OpClassSimt, 2, Operator_ >::WarpNumThreadsN = kWarpSize / WarpNumThreadsM

static

The documentation for this struct was generated from the following file:

- default_mma_core_simt.h