wmma_gemm_multiply_add.h
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#pragma once
#include <cutlass/wmma_matrix.h>
#ifdef CUTLASS_USE_WMMA_API
#include <cutlass/fragment.h>
namespace cutlass {
namespace gemm {
template <MatrixLayout::Kind kLayoutA_,
typename ScalarA_,
MatrixLayout::Kind kLayoutB_,
typename ScalarB_,
MatrixLayout::Kind kLayoutC_,
typename ScalarC_,
typename AccumulatorsPerWarp_,
typename InstructionShape_>
struct WmmaGemmMultiplyAdd {
typedef InstructionShape_ InstructionShape;
typedef Shape<1, InstructionShape_::kH, InstructionShape_::kW> ThreadsPerWarp;
typedef AccumulatorsPerWarp_ AccumulatorsPerWarp;
typedef ScalarA_ ScalarA;
typedef ScalarB_ ScalarB;
typedef ScalarC_ ScalarC;
typedef typename ShapeDiv<AccumulatorsPerWarp, InstructionShape>::Shape Iterations;
typedef WmmaMatrix<GemmOperand::kA, kLayoutA_, ScalarA, InstructionShape> ElementA;
typedef Fragment<ElementA, Iterations::kW> FragmentA;
typedef WmmaMatrix<GemmOperand::kB, kLayoutB_, ScalarB, InstructionShape> ElementB;
typedef Fragment<ElementB, Iterations::kH> FragmentB;
typedef WmmaMatrix<GemmOperand::kC, kLayoutC_, ScalarC, InstructionShape> ElementC;
typedef Fragment<ElementC, Iterations::kH * Iterations::kW> Accumulators;
CUTLASS_DEVICE WmmaGemmMultiplyAdd() {}
CUTLASS_DEVICE void multiply_add(FragmentA const& a,
FragmentB const& b,
Accumulators const& c,
Accumulators& d) {
for (int j = 0; j < Iterations::kH; ++j) {
for (int i = 0; i < Iterations::kW; ++i) {
// The input elements.
ElementA const& elt_a = a[i];
ElementB const& elt_b = b[j];
ElementC const& elt_c = c[j * Iterations::kW + i];
// The output element.
ElementC& elt_d = d[j * Iterations::kW + i];
// The wmma instruction.
nvcuda::wmma::mma_sync(elt_d, elt_a, elt_b, elt_c);
}
}
}
};
} // namespace gemm
} // namespace cutlass
#endif // defined CUTLASS_USE_WMMA_API
wmma_matrix.h
Abstractions for loading and storing matrices using the CUDA WMMA API.
cutlass
Definition: convert.h:33
cutlass::ShapeDiv::Shape
Shape< A_::kD/B_::kD, A_::kH/B_::kH, A_::kW/B_::kW, A_::kC/B_::kC > Shape
Definition: shape.h:126
cutlass::MatrixLayout::Kind
Kind
Definition: matrix_traits.h:36
fragment.h
Defines Fragment, a statically-sized array for storing parts of matrices within a thread&#39;s registers...