24.02.1
ChannelShuffle.cpp
Go to the documentation of this file.
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/*
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* Copyright (c) 2018-2020 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "
ChannelShuffle.h
"
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#include "
arm_compute/core/Types.h
"
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#include "
tests/validation/Helpers.h
"
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namespace
arm_compute
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{
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namespace
test
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{
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namespace
validation
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{
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namespace
reference
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{
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// Refence implementation for channel shuffle taken from https://github.com/pytorch/pytorch/blob/master/caffe2/operators/channel_shuffle_op.h
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template
<
typename
T>
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SimpleTensor<T>
channel_shuffle
(
const
SimpleTensor<T>
&
src
,
int
num_groups
)
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{
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// Create reference
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SimpleTensor<T>
dst
{
src
.shape(),
src
.data_type(),
src
.num_channels(),
src
.quantization_info() };
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const
int
M
=
src
.shape()[0];
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const
int
N
=
src
.shape()[1];
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const
int
num_channels =
src
.shape()[2];
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const
int
batches
=
src
.shape()[3];
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const
int
MxN =
M
*
N
;
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const
int
channels_in_group = num_channels /
num_groups
;
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const
T *
src_ref
=
src
.data();
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T *
dst_ref
=
dst
.data();
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#if defined(_OPENMP)
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#pragma omp parallel for collapse(2)
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#endif
/* _OPENMP */
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for
(
int
n = 0; n <
batches
; ++n)
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{
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for
(
int
g = 0; g <
num_groups
; ++g)
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{
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// Gather the group g block (of size channels_in_group * MxN) from output channels
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// g + 0 * G, g + 1 * G, g + 2 * G, g + G * (K - 1) etc.
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const
T *src_ptr =
src_ref
+ g * channels_in_group * MxN + n * num_channels * MxN;
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T *dst_ptr =
dst_ref
+ g * MxN + n * num_channels * MxN;
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for
(
int
i = 0; i < channels_in_group; ++i)
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{
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std::copy
(src_ptr + i * MxN,
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src_ptr + (i + 1) * MxN,
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dst_ptr + i *
num_groups
* MxN);
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}
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}
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}
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return
dst
;
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}
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template
SimpleTensor<uint8_t>
channel_shuffle
(
const
SimpleTensor<uint8_t>
&
src
,
int
num_groups
);
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template
SimpleTensor<uint16_t>
channel_shuffle
(
const
SimpleTensor<uint16_t>
&
src
,
int
num_groups
);
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template
SimpleTensor<uint32_t>
channel_shuffle
(
const
SimpleTensor<uint32_t>
&
src
,
int
num_groups
);
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template
SimpleTensor<half>
channel_shuffle
(
const
SimpleTensor<half>
&
src
,
int
num_groups
);
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template
SimpleTensor<float>
channel_shuffle
(
const
SimpleTensor<float>
&
src
,
int
num_groups
);
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}
// namespace reference
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}
// namespace validation
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}
// namespace test
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}
// namespace arm_compute
arm_compute::test::validation::src
SimpleTensor< float > src
Definition:
DFT.cpp:155
N
unsigned int N
Definition:
CpuGemmAssemblyDispatch.cpp:103
arm_compute::test::validation::src_ref
SimpleTensor< float > src_ref
Definition:
Im2Col.cpp:197
arm_compute::test::validation::dst
auto dst
Definition:
DFT.cpp:170
Types.h
batches
unsigned int batches
Definition:
CpuGemmAssemblyDispatch.cpp:105
arm_compute::test::validation::reference::channel_shuffle
SimpleTensor< T > channel_shuffle(const SimpleTensor< T > &src, int num_groups)
Definition:
ChannelShuffle.cpp:39
arm_compute::test::validation::reference::copy
SimpleTensor< T > copy(const SimpleTensor< T > &src, const TensorShape &output_shape)
Definition:
Copy.cpp:37
arm_compute::test::SimpleTensor
Simple tensor object that stores elements in a consecutive chunk of memory.
Definition:
SimpleTensor.h:58
arm_compute::test::validation::num_groups
const unsigned int num_groups
Definition:
Im2Col.cpp:153
M
unsigned int M
Definition:
CpuGemmAssemblyDispatch.cpp:102
arm_compute
Copyright (c) 2017-2024 Arm Limited.
Definition:
introduction.dox:24
ChannelShuffle.h
Helpers.h
arm_compute::test::validation::dst_ref
auto dst_ref
Definition:
DFT.cpp:172
tests
validation
reference
ChannelShuffle.cpp
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