docs/host__reorder_8h_source.html
| | CUTLASS
CUDA Templates for Linear Algebra Subroutines and Solvers |
host_reorder.h
Go to the documentation of this file.
1 /***************************************************************************************************
2 * Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification, are permitted
5 * provided that the following conditions are met:
6 * * Redistributions of source code must retain the above copyright notice, this list of
7 * conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above copyright notice, this list of
9 * conditions and the following disclaimer in the documentation and/or other materials
10 * provided with the distribution.
11 * * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
12 * to endorse or promote products derived from this software without specific prior written
13 * permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
21 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 **************************************************************************************************/
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](tensor view io_8h.html)"
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,
42TensorRef<Element, Layout> src,
43cutlass::gemm::GemmCoord problem_size) {
44const int InstructionShapeCol = 8;
45// 4 threads per Quad
46const int ElementsPerThread = InstructionShapeCol / 4;
47// 4 threads per Quad
48const int ReorderedElementsPerThread =
49 Interleaved / 4;
50
51for (int n = 0; n < problem_size.n(); n++) {
52for (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
Definition: aligned_buffer.h:35
void reorder_column(TensorRef< Element, Layout > dest, TensorRef< Element, Layout > src, cutlass::gemm::GemmCoord problem_size)
Definition: host_reorder.h:41
A Coord is a coordinate of arbitrary rank into a tensor or matrix.
Definition: include/cutlass/gemm/gemm.h:94
CUTLASS_HOST_DEVICE Index const & n() const
Returns the GEMM N coordinate.
Definition: include/cutlass/gemm/gemm.h:137
Defines a structure containing strides and a pointer to tensor data.
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](tensor view io_8h.html)
CUTLASS_HOST_DEVICE Reference at(TensorCoord const &coord) const
Returns a reference to the element at a given Coord.
Definition: tensor_ref.h:307
HostTensor contributes management for both host and device memory.
Reference implementation for GEMM in host-side code.
Generated by 1.8.11