diff options
Diffstat (limited to 'src/core/CL/cl_kernels/nchw/channel_shuffle.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/nchw/channel_shuffle.cl | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/nchw/channel_shuffle.cl b/src/core/CL/cl_kernels/nchw/channel_shuffle.cl new file mode 100644 index 0000000000..84396e122f --- /dev/null +++ b/src/core/CL/cl_kernels/nchw/channel_shuffle.cl @@ -0,0 +1,103 @@ +/* +* Copyright (c) 2018-2021 Arm Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "helpers.h" +#include "tile_helpers.h" + +#if defined(DATA_TYPE) && defined(VEC_SIZE) && defined(NUM_GROUPS) && defined(K) && defined(SRC_DIM_Z) + +// Check valid VEC_SIZES +#if VEC_SIZE != 1 && VEC_SIZE != 2 && VEC_SIZE != 3 && VEC_SIZE != 4 && VEC_SIZE != 8 && VEC_SIZE != 16 +#error "Only vector sizes 1, 2, 3, 4, 8 and 16 are supported" +#endif // VEC_SIZE != 1 && VEC_SIZE != 2 && VEC_SIZE != 3 && VEC_SIZE != 4 && VEC_SIZE != 8 && VEC_SIZE != 16 + +#define DIV_MOD_UINT(x, y, div_res, mod_res) \ + ({ \ + div_res = (uint)((x)/(y)); \ + uint r = div_res * (y); \ + mod_res = (x)-r; \ + }) + +/** Performs channel shuffle when the data layout is NCHW. See https://arxiv.org/pdf/1707.01083.pdf for details. + * + * @note The vector size must be given as a preprocessor argument using -DVEC_SIZE=num. e.g. -DVEC_SIZE=4 + * @note The depth of the tensor must be given as a preprocessor argument using -DSRC_DIM_Z=num. e.g. -DSRC_DIM_Z=64 + * @note The number of groups must be given as a preprocessor argument using -DNUM_GROUPS=num_groups. e.g. -DNUM_GROUPS=2 + * @note The number of channels in each group must be given as a preprocessor argument using -DK=num. e.g. -DK=1 + * K is equal to num_channels / num_groups. + * + * @param[in] src_ptr Pointer to the source matrix. Supported data types: All + * @param[in] src_stride_x Stride of the first source tensor in X dimension (in bytes) + * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] src_stride_y Stride of the first source tensor in Y dimension (in bytes) + * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] src_stride_z Stride of the first source tensor in Z dimension (in bytes) + * @param[in] src_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] src_stride_w Stride of the first source tensor in Z dimension (in bytes) + * @param[in] src_step_w src_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] src_offset_first_element_in_bytes The offset of the first element in the first source tensor + * @param[out] dst_ptr Pointer to the destination tensor. Supported data types: same as @p src_ptr + * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] dst_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] dst_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes) + * @param[in] dst_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] dst_stride_w Stride of the destination tensor in Z dimension (in bytes) + * @param[in] dst_step_w output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor + */ +__kernel void channel_shuffle_nchw(TENSOR4D_DECLARATION(src), + TENSOR4D_DECLARATION(dst)) +{ + uint curr_channel = 0; // channel id of input + uint batch_id = 0; // batch id + uint group_id = 0; // group id + uint channel_id = 0; // channel id within the group + + // Compute curr_channel and batch_id + DIV_MOD_UINT(get_global_id(2), SRC_DIM_Z, batch_id, curr_channel); + + // Compute group_id and channel_id + DIV_MOD_UINT(curr_channel, K, group_id, channel_id); + + const uint x = get_global_id(0) * VEC_SIZE; + const uint y = get_global_id(1) * 2; + const uint z = channel_id * NUM_GROUPS + group_id; + + // Load the Nx2 block + const __global uchar *input_ptr = src_ptr + src_offset_first_element_in_bytes + x * sizeof(DATA_TYPE) + y * src_stride_y + curr_channel * src_stride_z + batch_id * src_stride_w; + VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE) + u0 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)(input_ptr + 0 * src_stride_y)); + VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE) + u1 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)(input_ptr + 1 * src_stride_y)); + + // Store blocks + __global uchar *output_ptr = dst_ptr + dst_offset_first_element_in_bytes + x * sizeof(DATA_TYPE) + y * dst_stride_y + z * dst_stride_z + batch_id * dst_stride_w; + VSTORE(VEC_SIZE) + (u0, 0, (__global DATA_TYPE *)(output_ptr + 0 * dst_stride_y)); + VSTORE(VEC_SIZE) + (u1, 0, (__global DATA_TYPE *)(output_ptr + 1 * dst_stride_y)); +} + +#endif // defined(DATA_TYPE) && defined(VEC_SIZE) && defined(NUM_GROUPS) && defined(K) && defined(SRC_DIM_Z) |