CUTLASS: gemm.h Source File

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tools/util/include/cutlass/util/reference/device/kernel/gemm.h
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29 #pragma once
30
31 #include "cutlass/coord.h"
32 #include "cutlass/matrix_traits.h"
33 #include "cutlass/tensor_view.h"
34 #include "cutlass/gemm/gemm.h"
35
36 #include "cutlass/util/reference/device/thread/gemm.h"
37
38 namespace cutlass {
39 namespace reference {
40 namespace device {
41 namespace kernel {
42
44
47 template <
48 typename TensorRefA,
49 typename TensorRefB,
50 typename TensorRefC,
51 typename ScalarType,
52 typename AccumulatorType,
53 typename OutputTile,
54 typename InnerProductOp,
55 typename ConvertOp
56 >
57 __global__ void Gemm(
58 gemm::GemmCoord problem_size,
59 ScalarType alpha,
60 TensorRefA tensor_a,
61 TensorRefB tensor_b,
62 ScalarType beta,
63 TensorRefC tensor_c,
64 TensorRefC tensor_d,
65 AccumulatorType initial_accum) {
66
67 // Map each thread to a unique tile of the output matrix
68 MatrixCoord output_coord(
69 (threadIdx.x + blockIdx.x * blockDim.x) * OutputTile::kRow,
70 (threadIdx.y + blockIdx.y * blockDim.y) * OutputTile::kColumn
71 );
72
73 // Compute the general matrix product
74 thread::Gemm<
75 TensorRefA,
76 TensorRefB,
77 TensorRefC,
78 ScalarType,
79 AccumulatorType,
80 OutputTile,
81 InnerProductOp,
82 ConvertOp
83 > gemm(initial_accum);
84
85 gemm.multiply_add(
86 problem_size,
87 tensor_a,
88 tensor_b,
89 output_coord);
90
91 gemm.epilogue(problem_size, alpha, beta, tensor_c, tensor_d, output_coord);
92 }
93
95
98 template <
99 typename TensorRefCollectionA,
100 typename TensorRefCollectionB,
101 typename TensorRefCollectionC,
102 typename ScalarType,
103 typename AccumulatorType,
104 typename OutputTile,
105 typename InnerProductOp,
106 typename ConvertOp
107 >
108 __global__ void BatchedGemm(
109 gemm::GemmCoord problem_size,
110 ScalarType alpha,
111 TensorRefCollectionA tensor_collection_a,
112 TensorRefCollectionB tensor_collection_b,
113 ScalarType beta,
114 TensorRefCollectionC tensor_collection_c,
115 AccumulatorType initial_accum) {
116
117 // Obtain batch ID
118 int batch_id = blockIdx.z;
119
120 // Dereference based on batch_id
121 typename TensorRefCollectionA::TensorRef tensor_a = tensor_collection_a.at(batch_id);
122 typename TensorRefCollectionB::TensorRef tensor_b = tensor_collection_b.at(batch_id);
123 typename TensorRefCollectionC::TensorRef tensor_c = tensor_collection_c.at(batch_id);
124
125 // Map each thread to a unique tile of the output matrix
126 MatrixCoord output_coord(
127 (threadIdx.x + blockIdx.x * blockDim.x) * OutputTile::kColumn,
128 (threadIdx.y + blockIdx.y * blockDim.y) * OutputTile::kRow
129 );
130
131 // Compute the general matrix product
132 thread::Gemm<
133 typename TensorRefCollectionA::TensorRef,
134 typename TensorRefCollectionB::TensorRef,
135 typename TensorRefCollectionC::TensorRef,
136 ScalarType,
137 AccumulatorType,
138 OutputTile,
139 InnerProductOp,
140 ConvertOp
141 > gemm(initial_accum);
142
143 gemm.multiply_add(
144 problem_size,
145 tensor_a,
146 tensor_b,
147 output_coord);
148
149 gemm.epilogue(problem_size, alpha, beta, tensor_c, output_coord);
150 }
151
153
154 } // namespace kernel
155 } // namespace device
156 } // namespace reference
157 } // namespace cutlass
cutlass::reference::device::thread::Gemm
Thread-level blocked general matrix product.
Definition: tools/util/include/cutlass/util/reference/device/thread/gemm.h:57
cutlass
Definition: aligned_buffer.h:35
coord.h
A Coord is a coordinate of arbitrary rank into a tensor or matrix.
cutlass::gemm::GemmCoord
Definition: include/cutlass/gemm/gemm.h:94
gemm.h
Defines common types used for all GEMM-like operators.
tensor_view.h
Defines a structure containing strides and a pointer to tensor data.
cutlass::reference::device::kernel::BatchedGemm
__global__ void BatchedGemm(gemm::GemmCoord problem_size, ScalarType alpha, TensorRefCollectionA tensor_collection_a, TensorRefCollectionB tensor_collection_b, ScalarType beta, TensorRefCollectionC tensor_collection_c, AccumulatorType initial_accum)
Definition: tools/util/include/cutlass/util/reference/device/kernel/gemm.h:108
gemm.h
Reference implementation for GEMM in host-side code.
matrix_traits.h
Defines properties of matrices used to denote layout and operands to GEMM kernels.
cutlass::reference::device::kernel::Gemm
__global__ void Gemm(gemm::GemmCoord problem_size, ScalarType alpha, TensorRefA tensor_a, TensorRefB tensor_b, ScalarType beta, TensorRefC tensor_c, TensorRefC tensor_d, AccumulatorType initial_accum)
Definition: tools/util/include/cutlass/util/reference/device/kernel/gemm.h:57
cutlass::MatrixCoord
Definition: matrix_coord.h:39