thread_multiply_add.h
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#pragma once
#include <cutlass/fragment.h>
namespace cutlass {
namespace gemm {
template <typename AccumulatorsPerThread_,
typename ThreadsPerWarp_,
typename ScalarA_,
typename ScalarB_,
typename ScalarC_>
struct ThreadMultiplyAdd {
typedef Shape<1, 1, 1, 1> InstructionShape;
typedef AccumulatorsPerThread_ AccumulatorsPerThread;
typedef ThreadsPerWarp_ ThreadsPerWarp;
typedef typename ShapeMul<AccumulatorsPerThread, ThreadsPerWarp>::Shape AccumulatorsPerWarp;
typedef ScalarA_ ScalarA;
typedef Fragment<ScalarA, AccumulatorsPerThread::kW> FragmentA;
typedef ScalarB_ ScalarB;
typedef Fragment<ScalarB, AccumulatorsPerThread::kH> FragmentB;
typedef ScalarC_ ScalarC;
typedef Fragment<ScalarC, AccumulatorsPerThread::kH * AccumulatorsPerThread::kW, 16> Accumulators;
CUTLASS_DEVICE ThreadMultiplyAdd() {}
CUTLASS_DEVICE void multiply_add(FragmentA const& a,
FragmentB const& b,
Accumulators const& c,
Accumulators& d) {
for (int j = 0; j < AccumulatorsPerThread::kH; ++j) {
for (int i = 0; i < AccumulatorsPerThread::kW; ++i) {
d[j * AccumulatorsPerThread::kW + i] = a[i] * b[j] + c[j * AccumulatorsPerThread::kW + i];
}
}
}
};
} // namespace gemm
} // namespace cutlass
cutlass
Definition: convert.h:33
cutlass::gemm::ThreadMultiplyAdd::ThreadsPerWarp
ThreadsPerWarp_ ThreadsPerWarp
The number of threads per warp.
Definition: thread_multiply_add.h:49
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::FragmentA
Fragment< ScalarA, AccumulatorsPerThread::kW > FragmentA
The fragment for A.
Definition: thread_multiply_add.h:55
cutlass::gemm::ThreadMultiplyAdd::multiply_add
CUTLASS_DEVICE void multiply_add(FragmentA const &a, FragmentB const &b, Accumulators const &c, Accumulators &d)
Multiply : d = a*b + c.
Definition: thread_multiply_add.h:69
cutlass::gemm::ThreadMultiplyAdd::InstructionShape
Shape< 1, 1, 1, 1 > InstructionShape
The shape of the instruction.
Definition: thread_multiply_add.h:45
cutlass::gemm::ThreadMultiplyAdd::ScalarC
ScalarC_ ScalarC
The type for C and D.
Definition: thread_multiply_add.h:61
cutlass::gemm::ThreadMultiplyAdd::ThreadMultiplyAdd
CUTLASS_DEVICE ThreadMultiplyAdd()
Ctor.
Definition: thread_multiply_add.h:66
cutlass::Shape
A Shape implementing Layout Concept describing the dimensions of a cube.
Definition: shape.h:64
cutlass::gemm::ThreadMultiplyAdd::AccumulatorsPerThread
AccumulatorsPerThread_ AccumulatorsPerThread
The number of accumulators per thread.
Definition: thread_multiply_add.h:47
cutlass::gemm::ThreadMultiplyAdd::ScalarB
ScalarB_ ScalarB
The type for B.
Definition: thread_multiply_add.h:57
cutlass::gemm::ThreadMultiplyAdd::Accumulators
Fragment< ScalarC, AccumulatorsPerThread::kH *AccumulatorsPerThread::kW, 16 > Accumulators
The accumulators.
Definition: thread_multiply_add.h:63
cutlass::gemm::ThreadMultiplyAdd
Template performing matrix multiply-add operation within a thread.
Definition: thread_multiply_add.h:43
cutlass::gemm::ThreadMultiplyAdd::ScalarA
ScalarA_ ScalarA
The type for A.
Definition: thread_multiply_add.h:53
cutlass::gemm::ThreadMultiplyAdd::FragmentB
Fragment< ScalarB, AccumulatorsPerThread::kH > FragmentB
The fragment for B.
Definition: thread_multiply_add.h:59
fragment.h
Defines Fragment, a statically-sized array for storing parts of matrices within a thread&#39;s registers...
cutlass::gemm::ThreadMultiplyAdd::AccumulatorsPerWarp
ShapeMul< AccumulatorsPerThread, ThreadsPerWarp >::Shape AccumulatorsPerWarp
The number of accumulators per warp.
Definition: thread_multiply_add.h:51