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Diffstat (limited to 'src/core/CL/cl_kernels/common/pooling_layer.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/common/pooling_layer.cl | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/common/pooling_layer.cl b/src/core/CL/cl_kernels/common/pooling_layer.cl new file mode 100644 index 0000000000..5122f2c251 --- /dev/null +++ b/src/core/CL/cl_kernels/common/pooling_layer.cl @@ -0,0 +1,390 @@ +/* + * Copyright (c) 2017-2021 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 "repeat.h" +#include "tile_helpers.h" + +#if defined(POOL_AVG) || defined(POOL_L2) +#define POOL_OP(x, y) ((x) + (y)) +#else /* defined(POOL_AVG) || defined(POOL_L2) */ +#define POOL_OP(x, y) (fmax((x), (y))) +#endif /* defined(POOL_AVG) || defined(POOL_L2) */ + +#if defined(POOL_L2) +#define POW2_OP(x, vec_size) ((x) * (x)) +#else /* defined(POOL_L2) */ +#define POW2_OP(x, vec_size) (x) +#endif /* defined(POOL_L2) */ + +#define DIV_OP(x, y) (x * (1.f / y)) +#define SQRT_OP(x) sqrt((x)) + +#if STRIDE_X == 1 +#define POOLING3x3(res, input, output) POOLING3x3_STRIDE1(res, input, output) +#elif STRIDE_X == 2 /* STRIDE_X == 1 */ +#define POOLING3x3(res, input, output) POOLING3x3_STRIDE2(res, input, output) +#elif STRIDE_X == 3 /* STRIDE_X not equals 1 or 2 */ +#define POOLING3x3(res, input, output) POOLING3x3_STRIDE3(res, input, output) +#endif /* STRIDE_X == 3 */ + +#if defined(FP_MIXED_PRECISION) +#define CONVERT_TO_ACC_DATA_TYPE(x, n) CONVERT(x, VEC_DATA_TYPE(ACC_DATA_TYPE, n)) +#define VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(n, offset, ptr) \ + CONVERT_TO_ACC_DATA_TYPE(vload##n(offset, ptr), n) +#else /* defined(FP_MIXED_PRECISION) */ +#define VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(n, offset, ptr) vload##n(offset, ptr) +#endif /* defined(FP_MIXED_PRECISION) */ + +#define POOLING3x3_STRIDE1(res, input, output) \ + ({ \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data00 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) \ + data01 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(2, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0) + 4); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data10 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) \ + data11 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(2, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0) + 4); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data20 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) \ + data21 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(2, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0) + 4); \ + data00 = POW2_OP(data00, 4); \ + data01 = POW2_OP(data01, 2); \ + data10 = POW2_OP(data10, 4); \ + data11 = POW2_OP(data11, 2); \ + data20 = POW2_OP(data20, 4); \ + data21 = POW2_OP(data21, 2); \ + \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values00 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data00.s01212323); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values01 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data01.s0, data00.s3, data01.s01); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values10 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data10.s01212323); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values11 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data11.s0, data10.s3, data11.s01); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values20 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data20.s01212323); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values21 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data21.s0, data20.s3, data21.s01); \ + \ + values00 = POOL_OP(values00, values10); \ + values01 = POOL_OP(values01, values11); \ + values00 = POOL_OP(values00, values20); \ + values01 = POOL_OP(values01, values21); \ + \ + res = POOL_OP((VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s036, values01.s1), (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s147, values01.s2)); \ + res = POOL_OP(res, (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s25, values01.s03)); \ + }) + +#define POOLING3x3_STRIDE2(res, input, output) \ + ({ \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data00 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)); \ + ACC_DATA_TYPE data01 = (ACC_DATA_TYPE)(*((__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0) + 8)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data10 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0)); \ + ACC_DATA_TYPE data11 = (ACC_DATA_TYPE)(*((__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0) + 8)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data20 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0)); \ + ACC_DATA_TYPE data21 = (ACC_DATA_TYPE)(*((__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0) + 8)); \ + data00 = POW2_OP(data00, 8); \ + data01 = POW2_OP(data01, 1); \ + data10 = POW2_OP(data10, 8); \ + data11 = POW2_OP(data11, 1); \ + data20 = POW2_OP(data20, 8); \ + data21 = POW2_OP(data21, 1); \ + \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values00 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data00.s01223445); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values01 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data00.s667, data01); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values10 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data10.s01223445); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values11 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data10.s667, data11); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + values20 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))(data20.s01223445); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + values21 = (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data20.s667, data21); \ + \ + values00 = POOL_OP(values00, values10); \ + values01 = POOL_OP(values01, values11); \ + values00 = POOL_OP(values00, values20); \ + values01 = POOL_OP(values01, values21); \ + \ + res = POOL_OP((VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s036, values01.s1), (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s147, values01.s2)); \ + res = POOL_OP(res, (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(values00.s25, values01.s03)); \ + }) + +#define POOLING3x3_STRIDE3(res, input, output) \ + ({ \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data00 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data01 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0) + 8); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data10 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data11 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0) + 8); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) \ + data20 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0)); \ + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) \ + data21 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(4, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0) + 8); \ + data00 = POW2_OP(data00, 8); \ + data01 = POW2_OP(data01, 4); \ + data10 = POW2_OP(data10, 8); \ + data11 = POW2_OP(data11, 4); \ + data20 = POW2_OP(data20, 8); \ + data21 = POW2_OP(data21, 4); \ + \ + data00 = POOL_OP(data00, data10); \ + data01 = POOL_OP(data01, data11); \ + data00 = POOL_OP(data00, data20); \ + data01 = POOL_OP(data01, data21); \ + \ + res = POOL_OP((VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data00.s036, data01.s1), (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data00.s147, data01.s2)); \ + res = POOL_OP(res, (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(data00.s25, data01.s03)); \ + }) + +ACC_DATA_TYPE calculate_avg_scale(const int pool_size_x, const int pool_size_y, const int upper_bound_w, const int upper_bound_h, + const int pad_x, const int pad_y, const int stride_x, const int stride_y) +{ + int start_x = get_global_id(0) * stride_x - pad_x; + int start_y = get_global_id(1) * stride_y - pad_y; + const int end_x = min(start_x + pool_size_x, upper_bound_w); + const int end_y = min(start_y + pool_size_y, upper_bound_h); +#if defined(EXCLUDE_PADDING) + start_x = max(0, start_x); + start_y = max(0, start_y); +#endif /* defined(EXCLUDE_PADDING) */ + return ((end_y - start_y) * (end_x - start_x)); +} + +/** Performs a pooling function of pool size equal to 2. + * + * @note Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16/F32; + * @note In case of average pooling the following information must be passed at compile time: + * -DPOOL_AVG or -DPOOL_L2 must be provided otherwise max pooling will be performed. + * -DMAX_WIDTH and -DMAX_HEIGHT which are the maximum accessible indeces in x and y dimensions (width + pad) + * -DSTRIDE_X and -DSTRIDE_Y which are the steps of the window along the x and y directions + * -DPAD_X and -DPAD_Y which are the pooling paddings in x and y dimension + * + * @param[in] input_ptr Pointer to the source tensor. Supported data types: F16/F32 + * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor + * @param[out] output_ptr Pointer to the destination tensor. Supported data types: same as @p input_ptr + * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor + */ +__kernel void pooling_layer_2( + TENSOR3D_DECLARATION(input), + TENSOR3D_DECLARATION(output)) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); + + // Load data + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) + data0 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(2, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)); + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) + data1 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(2, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0)); + +#if defined(POOL_L2) + // Raise to power of 2 for L2 Pooling + data0 = POW2_OP(data0, 2); + data1 = POW2_OP(data1, 2); +#endif /* defined(POOL_L2) */ + + // Perform calculations + data0 = POOL_OP(data0, data1); + ACC_DATA_TYPE res = POOL_OP(data0.s0, data0.s1); + +#if defined(POOL_AVG) || defined(POOL_L2) + // Divide by pool region in case of average or l2 pooling + res = DIV_OP(res, calculate_avg_scale(2, 2, MAX_WIDTH, MAX_HEIGHT, PAD_X, PAD_Y, STRIDE_X, STRIDE_Y)); +#endif /* defined(POOL_AVG) || defined(POOL_L2) */ + +#if defined(POOL_L2) + // Take square root of the result in L2 pooling + res = SQRT_OP(res); +#endif /* defined(POOL_L2) */ + + // Store result + *(__global DATA_TYPE *)output.ptr = (DATA_TYPE)res; +} + +/** Performs a pooling function of pool size equal to 3 + * + * @note Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16/F32; + * @note In case of average pooling the following information must be passed at compile time: + * -DPOOL_AVG or -DPOOL_L2 must be provided otherwise max pooling will be performed. + * -DMAX_WIDTH and -DMAX_HEIGHT which are the maximum accessible indeces in x and y dimensions (width + pad) + * -DSTRIDE_X and -DSTRIDE_Y which are the steps of the window along the x and y directions + * -DPAD_X and -DPAD_Y which are the pooling paddings in x and y dimension + * + * @param[in] input_ptr Pointer to the source tensor. Supported data types: F16/F32 + * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor + * @param[out] output_ptr Pointer to the destination tensor. Supported data types: same as @p input_ptr + * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor + */ +__kernel void pooling_layer_3( + TENSOR3D_DECLARATION(input), + TENSOR3D_DECLARATION(output)) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); + + // Load data + VEC_DATA_TYPE(ACC_DATA_TYPE, 3) + data0 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(3, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 0, 0)); + VEC_DATA_TYPE(ACC_DATA_TYPE, 3) + data1 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(3, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 1, 0)); + VEC_DATA_TYPE(ACC_DATA_TYPE, 3) + data2 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(3, 0, (__global DATA_TYPE *)tensor3D_offset(&input, 0, 2, 0)); + +#if defined(POOL_L2) + // Raise to power of 2 for L2 Pooling + data0 = POW2_OP(data0, 3); + data1 = POW2_OP(data1, 3); + data2 = POW2_OP(data2, 3); +#endif /* defined(POOL_L2) */ + + // Perform calculations + data0 = POOL_OP(data0, data1); + data0 = POOL_OP(data0, data2); + ACC_DATA_TYPE res = POOL_OP(POOL_OP(data0.s0, data0.s1), data0.s2); + +#if defined(POOL_AVG) || defined(POOL_L2) + // Divide by pool region in case of average pooling + res = DIV_OP(res, calculate_avg_scale(3, 3, MAX_WIDTH, MAX_HEIGHT, PAD_X, PAD_Y, STRIDE_X, STRIDE_Y)); +#endif /* defined(POOL_AVG) || defined(POOL_L2) */ + +#if defined(POOL_L2) + // Take square root of the result in L2 pooling + res = SQRT_OP(res); +#endif /* defined(POOL_L2) */ + + // Store result + *(__global DATA_TYPE *)output.ptr = (DATA_TYPE)res; +} + +#if defined(POOLING3x3) + +#define CONVERT_OP(data_type) convert_##data_type##4 +#define CONVERT_VECTOR4(data_type) CONVERT_OP(data_type) + +VEC_DATA_TYPE(ACC_DATA_TYPE, 4) +calculate_avg_scale4(const int pool_size, const int upper_bound_w, const int upper_bound_h, + const int pad_x, const int pad_y, const int stride_x, const int stride_y) +{ + int4 start_x = ((int4)get_global_id(0) * 4 + (int4)(0, 1, 2, 3)) * (int4)stride_x - (int4)pad_x; + int start_y = get_global_id(1) * stride_y - pad_y; + const int4 end_x = min(start_x + (int4)pool_size, (int4)upper_bound_w); + const int end_y = min(start_y + pool_size, upper_bound_h); +#if defined(EXCLUDE_PADDING) + start_x = max((int4)0, start_x); + start_y = max(0, start_y); +#endif /* defined(EXCLUDE_PADDING) */ + return (VEC_DATA_TYPE(ACC_DATA_TYPE, 4))(1.f) / CONVERT_VECTOR4(ACC_DATA_TYPE)(((int4)(end_y - start_y)) * (end_x - start_x)); +} + +/** Performs an optimized pooling function of pool size equal to 3 when the stride_x is less equal than 3 + * + * @note Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16/F32; + * @note In case of average pooling the following information must be passed at compile time: + * -DPOOL_AVG or -DPOOL_L2 must be provided otherwise max pooling will be performed. + * -DMAX_WIDTH and -DMAX_HEIGHT which are the maximum accessible indeces in x and y dimensions (width + pad) + * -DSTRIDE_X and -DSTRIDE_Y which are the steps of the window along the x and y directions + * -DPAD_X and -DPAD_Y which are the pooling paddings in x and y dimension + * + * @param[in] input_ptr Pointer to the source tensor. Supported data types: F16/F32 + * @param[in] input_stride_x Stride of the source tensor in X dimension (in bytes) + * @param[in] input_step_x input_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] input_stride_y Stride of the source tensor in Y dimension (in bytes) + * @param[in] input_step_y input_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] input_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] input_step_z input_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] input_offset_first_element_in_bytes The offset of the first element in the source tensor + * @param[out] output_ptr Pointer to the destination tensor. Supported data types: same as @p input_ptr + * @param[in] output_stride_x Stride of the destination tensor in X dimension (in bytes) + * @param[in] output_step_x output_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] output_stride_y Stride of the destination tensor in Y dimension (in bytes) + * @param[in] output_step_y output_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] output_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] output_step_z output_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] output_offset_first_element_in_bytes The offset of the first element in the destination tensor + */ +__kernel void pooling_layer_optimized_3( + TENSOR3D_DECLARATION(input), + TENSOR3D_DECLARATION(output)) +{ + // Get pixels pointer + Tensor3D input = CONVERT_TO_TENSOR3D_STRUCT(input); + Tensor3D output = CONVERT_TO_TENSOR3D_STRUCT(output); + + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) + res; + + // Perform pooling 3x3 for 4 output elements + POOLING3x3(res, input, output); + +#if defined(POOL_AVG) || defined(POOL_L2) + // Divide by pool region in case of average pooling + res *= calculate_avg_scale4(3, MAX_WIDTH, MAX_HEIGHT, PAD_X, PAD_Y, STRIDE_X, STRIDE_Y); +#endif /* defined(POOL_AVG) || defined(POOL_L2) */ + +#if defined(POOL_L2) + // Take square root of the result in L2 pooling + res = SQRT_OP(res); +#endif /* defined(POOL_L2) */ + + vstore4(CONVERT(res, VEC_DATA_TYPE(DATA_TYPE, 4)), 0, (__global DATA_TYPE *)output.ptr); +} +#endif // defined(POOLING3x3) |