CUTLASS: tensor_op_policy.h Source File

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tensor_op_policy.h
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31 #pragma once
32
33 #include "cutlass/matrix_shape.h"
34 #include "cutlass/layout/matrix.h"
35
37
38 namespace cutlass {
39 namespace epilogue {
40 namespace warp {
41
43
45 template <
46 typename WarpShape,
47 typename OperatorShape,
48 typename Layout
49 >
50 struct TensorOpPolicy;
51
53
55 template <
56 typename WarpShape,
57 typename OperatorShape
58 >
59 struct TensorOpPolicy<WarpShape, OperatorShape, layout::RowMajor> {
60
62 using OperatorCount = MatrixShape<
63 WarpShape::kM / OperatorShape::kM,
64 WarpShape::kN / OperatorShape::kN
65 >;
66
67 //
68 // Hard-coded constants regarding Tensor Operations
69 //
70
71 static int const kElementsPerAccess = 2;
72 static int const kRowsPerIteration = 8;
73
74 //
75 // Derived quantities
76 //
77
78 // Number of 'externally visible' iterations per actual instruction
79 static int const kIterationsPerInstruction = OperatorShape::kM / kRowsPerIteration;
80
81 // Number of externally visible iterations
82 static int const kIterations = OperatorCount::kRow * kIterationsPerInstruction;
83
84 static int const kAccumulatorRowStride = kElementsPerAccess;
85 static int const kAccumulatorColumnStride = kElementsPerAccess * OperatorCount::kRow * kIterationsPerInstruction;
86 };
87
89
91 template <
92 typename WarpShape,
93 typename OperatorShape,
94 int InterleavedK
95 >
96 struct TensorOpPolicy<WarpShape, OperatorShape,
97 layout::ColumnMajorInterleaved<InterleavedK> > {
99 using OperatorCount = MatrixShape<WarpShape::kM / OperatorShape::kM,
100 WarpShape::kN / OperatorShape::kN>;
101
102 //
103 // Hard-coded constants regarding Tensor Operations
104 //
105
106 static int const kElementsPerAccess = 2;
107 static int const kRowsPerIteration = 8;
108
109 //
110 // Derived quantities
111 //
112
113 // Number of 'externally visible' iterations per actual instruction
114 static int const kIterationsPerInstruction =
115 OperatorShape::kM / kRowsPerIteration;
116
117 // Number of externally visible iterations
118 static int const kIterations = WarpShape::kN / InterleavedK *
119 OperatorCount::kRow *
120 kIterationsPerInstruction;
121 };
122
124
125 } // namespace warp
126 } // namespace epilogue
127 } // namespace cutlass
128
cutlass::MatrixShape
Describes the size of a matrix tile.
Definition: matrix_shape.h:42
cutlass
Definition: aligned_buffer.h:35
matrix_shape.h
Defines a Shape template for matrix tiles.
cutlass::epilogue::warp::TensorOpPolicy
Policy details related to the epilogue.
Definition: tensor_op_policy.h:50
matrix.h
Defines layout functions used by TensorRef and derived classes.