CUTLASS: host_reorder.h Source File

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host_reorder.h
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25
30 #pragma once
31
32 #include "cutlass/coord.h"
33 #include "cutlass/util/host_tensor.h"
34 #include "cutlass/tensor_view.h"
35 #include "cutlass/util/tensor_view_io.h"
36 #include "cutlass/util/reference/host/gemm.h"
37
38 namespace cutlass {
39
40 template <int Interleaved, typename Element, typename Layout>
41 void reorder_column(TensorRef<Element, Layout> dest,
42 TensorRef<Element, Layout> src,
43 cutlass::gemm::GemmCoord problem_size) {
44 const int InstructionShapeCol = 8;
45 // 4 threads per Quad
46 const int ElementsPerThread = InstructionShapeCol / 4;
47 // 4 threads per Quad
48 const int ReorderedElementsPerThread =
49 Interleaved / 4;
50
51 for (int n = 0; n < problem_size.n(); n++) {
52 for (int k = 0; k < problem_size.k(); k++) {
53 dest.at({k, (n / Interleaved) * Interleaved +
54 ((n % ReorderedElementsPerThread) / ElementsPerThread) *
55 InstructionShapeCol +
56 ((n % Interleaved) / ReorderedElementsPerThread) *
57 ElementsPerThread +
58 (n % ElementsPerThread)}) = src.at({k, n});
59 }
60 }
61 }
62
63 } // namespace cutlass
cutlass
Definition: aligned_buffer.h:35
cutlass::reorder_column
void reorder_column(TensorRef< Element, Layout > dest, TensorRef< Element, Layout > src, cutlass::gemm::GemmCoord problem_size)
Definition: host_reorder.h:41
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
cutlass::gemm::GemmCoord::n
CUTLASS_HOST_DEVICE Index const & n() const
Returns the GEMM N coordinate.
Definition: include/cutlass/gemm/gemm.h:137
tensor_view.h
Defines a structure containing strides and a pointer to tensor data.
cutlass::gemm::GemmCoord::k
CUTLASS_HOST_DEVICE Index const & k() const
Returns the GEMM K coordinate.
Definition: include/cutlass/gemm/gemm.h:145
cutlass::TensorRef< Element, Layout >
tensor_view_io.h
cutlass::TensorRef::at
CUTLASS_HOST_DEVICE Reference at(TensorCoord const &coord) const
Returns a reference to the element at a given Coord.
Definition: tensor_ref.h:307
host_tensor.h
HostTensor contributes management for both host and device memory.
gemm.h
Reference implementation for GEMM in host-side code.