1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
* Copyright (c) 2018 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"
#if defined(DATA_TYPE) && defined(VEC_SIZE) && defined(NUM_GROUPS) && defined(K) && defined(SRC_DIM_Z)
// Check valid VEC_SIZES
#if VEC_SIZE != 4 && VEC_SIZE != 8 && VEC_SIZE != 16
#error "Only vector sizes 4, 8 and 16 are supported"
#endif // VEC_SIZE != 4 && VEC_SIZE != 8 && VEC_SIZE != 16
#define TYPE VEC_DATA_TYPE(DATA_TYPE, VEC_SIZE)
#define DIV_MOD_UINT(x, y, div_res, mod_res) \
({ \
div_res = (uint)((x) * (float)(1.0f / (float)(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: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32
* @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;
TYPE u0 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)(input_ptr + 0 * src_stride_y));
TYPE 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));
}
#if VEC_SIZE == 4 && defined(LAST_ACCESSED)
/** Performs channel shuffle when the data layout is NHWC. See https://arxiv.org/pdf/1707.01083.pdf for details.
*
* @note This implementation is only defined for VEC_SIZE = 4
* @note This last element accessed along the first dimension must be given as a preprocessor argument using -DLAST_ACCESSED=num. e.g. -DLAST_ACCESSED=64 in order to prevent out-of-bound writes.
* @note The vector size must be given as a preprocessor argument using -DVEC_SIZE=num. e.g. -DVEC_SIZE=4
* @note The height 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: U8/S8/QASYMM8/U16/S16/F16/U32/S32/F32
* @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_nhwc(TENSOR4D_DECLARATION(src),
TENSOR4D_DECLARATION(dst))
{
const uint curr_channel = min((uint)(get_global_id(0) * VEC_SIZE), (uint)LAST_ACCESSED); // input feature map
uint channel_id0 = 0;
uint channel_id1 = 0;
uint channel_id2 = 0;
uint channel_id3 = 0;
uint group_id0 = 0;
uint group_id1 = 0;
uint group_id2 = 0;
uint group_id3 = 0;
uint y = 0;
uint batch_id = 0;
// Compute curr_channel and batch_id
DIV_MOD_UINT(get_global_id(2), (uint)SRC_DIM_Z, batch_id, y);
// Compute group_id and channel_id
DIV_MOD_UINT(curr_channel + (uint)0, K, group_id0, channel_id0);
DIV_MOD_UINT(curr_channel + (uint)1, K, group_id1, channel_id1);
DIV_MOD_UINT(curr_channel + (uint)2, K, group_id2, channel_id2);
DIV_MOD_UINT(curr_channel + (uint)3, K, group_id3, channel_id3);
const uint x = get_global_id(1) * 2;
const uint z0 = channel_id0 * (uint)NUM_GROUPS + group_id0;
const uint z1 = channel_id1 * (uint)NUM_GROUPS + group_id1;
const uint z2 = channel_id2 * (uint)NUM_GROUPS + group_id2;
const uint z3 = channel_id3 * (uint)NUM_GROUPS + group_id3;
// Load the Nx2 block
const __global uchar *input_ptr = src_ptr + src_offset_first_element_in_bytes + curr_channel * sizeof(DATA_TYPE) + x * src_stride_y + y * src_stride_z + batch_id * src_stride_w;
TYPE u0 = VLOAD(VEC_SIZE)(0, (__global DATA_TYPE *)(input_ptr + 0 * src_stride_y));
TYPE 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 * dst_stride_y + y * dst_stride_z + batch_id * dst_stride_w;
*((__global DATA_TYPE *)(output_ptr + (uint)0 * dst_stride_y + z0 * sizeof(DATA_TYPE))) = u0.s0;
*((__global DATA_TYPE *)(output_ptr + (uint)0 * dst_stride_y + z1 * sizeof(DATA_TYPE))) = u0.s1;
*((__global DATA_TYPE *)(output_ptr + (uint)0 * dst_stride_y + z2 * sizeof(DATA_TYPE))) = u0.s2;
*((__global DATA_TYPE *)(output_ptr + (uint)0 * dst_stride_y + z3 * sizeof(DATA_TYPE))) = u0.s3;
*((__global DATA_TYPE *)(output_ptr + (uint)1 * dst_stride_y + z0 * sizeof(DATA_TYPE))) = u1.s0;
*((__global DATA_TYPE *)(output_ptr + (uint)1 * dst_stride_y + z1 * sizeof(DATA_TYPE))) = u1.s1;
*((__global DATA_TYPE *)(output_ptr + (uint)1 * dst_stride_y + z2 * sizeof(DATA_TYPE))) = u1.s2;
*((__global DATA_TYPE *)(output_ptr + (uint)1 * dst_stride_y + z3 * sizeof(DATA_TYPE))) = u1.s3;
}
#endif // VEC_SIZE == 4 && defined(LAST_ACCESSED)
#endif // defined(DATA_TYPE) && defined(VEC_SIZE) && defined(NUM_GROUPS) && defined(K) && defined(SRC_DIM_Z)
|