Cutlass CUDA Templates for Linear Algebra Subroutines and Solvers

fp16_sgemm_multiply_add.h
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28 #pragma once
29
30 #include "cutlass/fragment.h"
31 #include "cutlass/gemm/thread_multiply_add.h"
32 namespace cutlass {
33 namespace gemm {
34
36
38 template <typename ThreadGemmShape_,
39 typename ThreadsPerWarp_>
40 struct ThreadMultiplyAdd<ThreadGemmShape_, ThreadsPerWarp_, half, half, float> {
42 typedef Shape<1, 1, 1, 1> InstructionShape;
44 typedef ThreadGemmShape_ ThreadGemmShape;
46 typedef ThreadGemmShape AccumulatorsPerThread;
48 typedef ThreadsPerWarp_ ThreadsPerWarp;
50 typedef typename ShapeMul<ThreadGemmShape, ThreadsPerWarp>::Shape AccumulatorsPerWarp;
52 typedef half ScalarA;
54 typedef Fragment<ScalarA, AccumulatorsPerThread::kW> FragmentA;
56 typedef half ScalarB;
58 typedef Fragment<ScalarB, AccumulatorsPerThread::kH> FragmentB;
60 typedef float ScalarC;
62 typedef Fragment<ScalarC, AccumulatorsPerThread::kH * AccumulatorsPerThread::kW, 16> Accumulators;
63
65 CUTLASS_DEVICE ThreadMultiplyAdd() {}
66
68 CUTLASS_DEVICE void multiply_add(FragmentA const& a,
69 FragmentB const& b,
70 Accumulators const& c,
71 Accumulators& d) {
72 for (int j = 0; j < AccumulatorsPerThread::kH; ++j) {
73 for (int i = 0; i < AccumulatorsPerThread::kW; ++i) {
74 d[j * AccumulatorsPerThread::kW + i] = static_cast<ScalarC>(a[i]) * static_cast<ScalarC>(b[j]) + c[j * AccumulatorsPerThread::kW + i];
75 }
76 }
77 }
78 };
79
81
82 } // namespace gemm
83 } // namespace cutlass
cutlass
Definition: convert.h:33
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ThreadMultiplyAdd
CUTLASS_DEVICE ThreadMultiplyAdd()
Ctor.
Definition: fp16_sgemm_multiply_add.h:65
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::FragmentB
Fragment< ScalarB, AccumulatorsPerThread::kH > FragmentB
The fragment for B.
Definition: fp16_sgemm_multiply_add.h:58
cutlass::ShapeMul::Shape
Shape< A_::kD *B_::kD, A_::kH *B_::kH, A_::kW *B_::kW, A_::kC *B_::kC > Shape
Definition: shape.h:119
cutlass::Fragment
A template defining Fragment Concept.
Definition: fragment.h:99
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::AccumulatorsPerWarp
ShapeMul< ThreadGemmShape, ThreadsPerWarp >::Shape AccumulatorsPerWarp
The number of accumulators per warp.
Definition: fp16_sgemm_multiply_add.h:50
thread_multiply_add.h
Template implementing matrix multiply-add operations on fragments.
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ThreadGemmShape
ThreadGemmShape_ ThreadGemmShape
The shape of a thread-leveel matrix multiply accumulate.
Definition: fp16_sgemm_multiply_add.h:44
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::multiply_add
CUTLASS_DEVICE void multiply_add(FragmentA const &a, FragmentB const &b, Accumulators const &c, Accumulators &d)
Multiply : d = a*b + c.
Definition: fp16_sgemm_multiply_add.h:68
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ScalarA
half ScalarA
The type for A. specialized to half.
Definition: fp16_sgemm_multiply_add.h:52
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ScalarB
half ScalarB
The type for B. specialized to half.
Definition: fp16_sgemm_multiply_add.h:56
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ThreadsPerWarp
ThreadsPerWarp_ ThreadsPerWarp
The number of threads per warp.
Definition: fp16_sgemm_multiply_add.h:48
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::FragmentA
Fragment< ScalarA, AccumulatorsPerThread::kW > FragmentA
The fragment for A.
Definition: fp16_sgemm_multiply_add.h:54
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::ScalarC
float ScalarC
The type for C and D. specialized to float.
Definition: fp16_sgemm_multiply_add.h:60
cutlass::Shape
A Shape implementing Layout Concept describing the dimensions of a cube.
Definition: shape.h:64
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::Accumulators
Fragment< ScalarC, AccumulatorsPerThread::kH *AccumulatorsPerThread::kW, 16 > Accumulators
The accumulators.
Definition: fp16_sgemm_multiply_add.h:62
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::AccumulatorsPerThread
ThreadGemmShape AccumulatorsPerThread
Aliased to "AccumulatorsPerThread" for compatibility. Expect to be renamed in CUTLASS v2...
Definition: fp16_sgemm_multiply_add.h:46
cutlass::gemm::ThreadMultiplyAdd
Template performing matrix multiply-add operation within a thread.
Definition: thread_multiply_add.h:44
fragment.h
Defines Fragment, a statically-sized array for storing parts of matrices within a thread&#39;s registers...
cutlass::gemm::ThreadMultiplyAdd< ThreadGemmShape_, ThreadsPerWarp_, half, half, float >::InstructionShape
Shape< 1, 1, 1, 1 > InstructionShape
The shape of the instruction.
Definition: fp16_sgemm_multiply_add.h:42