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Diffstat (limited to 'src/core/CL/cl_kernels/nchw/pooling_layer.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/nchw/pooling_layer.cl | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/nchw/pooling_layer.cl b/src/core/CL/cl_kernels/nchw/pooling_layer.cl new file mode 100644 index 0000000000..15ad116289 --- /dev/null +++ b/src/core/CL/cl_kernels/nchw/pooling_layer.cl @@ -0,0 +1,285 @@ +/* + * 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" + +#if defined(POOL_AVG) || defined(POOL_L2) +#define POOL_OP(x, y) ((x) + (y)) +#else /* defined(POOL_AVG) || defined(POOL_L2) */ +#if defined(QUANTIZED) +#define POOL_OP(x, y) (max((x), (y))) +#else // defined(QUANTIZED) +#define POOL_OP(x, y) (fmax((x), (y))) +#endif // defined(QUANTIZED) +#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 defined(FP_MIXED_PRECISION) || defined(QUANTIZED) +#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) || defined(QUANTIZED)*/ +#define VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(n, offset, ptr) vload##n(offset, ptr) +#endif /* defined(FP_MIXED_PRECISION) || defined(QUANTIZED)*/ + +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)); +} + +#if defined(POOL_SIZE_X) && defined(POOL_SIZE_Y) + +/** Performs a pooling function of pool size equal to N (NCHW) + * + * @note Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=float. Supported data types are F16/F32/QASYMM8; + * @note Pool sizes must be passed using -DPOOL_SIZE_X and -DPOOL_SIZE_Y e.g. -DPOOL_SIZE_X=13; + * @note In case of average pooling the following information must be passed at compile time: + * -DPOOL_AVG 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 + * @note The initial value for the pooling operation must be passed at compile time using -DINITIAL_VALUE e.g. -DINITIAL_VALUE=0 + * + * @param[in] src_ptr Pointer to the source tensor. Supported data types: F16/F32/QASYMM8 + * @param[in] src_stride_x Stride of the 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 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 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_offset_first_element_in_bytes The offset of the first element in the 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 dst_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 dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] dst_step_z dst_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 pooling_layer_MxN_nchw( + TENSOR3D_DECLARATION(src), + TENSOR3D_DECLARATION(dst)) +{ + int id0 = get_global_id(0); + int id1 = get_global_id(1); + int id2 = get_global_id(2); + + int x_coords = (id0 * STRIDE_X) - PAD_X; + int y_coords = (id1 * STRIDE_Y) - PAD_Y; + + __global uchar *src_addr = src_ptr + src_offset_first_element_in_bytes + y_coords * (int)src_stride_y + id2 * src_stride_z; + + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) + vdata = INITIAL_VALUE; + ACC_DATA_TYPE sdata = INITIAL_VALUE; + + const int end_x = min((int)POOL_SIZE_X, (int)(SRC_WIDTH - x_coords)); + const int end_y = min((int)POOL_SIZE_Y, (int)(SRC_HEIGHT - y_coords)); + + // Load data + for(int y = 0; y < end_y; ++y) + { + if((y_coords + y) >= 0) + { + int x = 0; + for(; x <= (end_x - 8); x += 8) + { + int8 src_x = (int8)(x_coords + x) + VEC_OFFS(int, 8); +#if defined(POOL_AVG) || defined(POOL_L2) + SELECT_VEC_DATA_TYPE(ACC_DATA_TYPE, 8) + cond_x = CONVERT(src_x < 0, SELECT_VEC_DATA_TYPE(ACC_DATA_TYPE, 8)); + src_x = clamp(src_x, (int8)0, (int8)(SRC_WIDTH - 1)); + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) + data0 = select(VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)(src_addr + src_x.s0 * sizeof(DATA_TYPE) + y * src_stride_y)), (VEC_DATA_TYPE(ACC_DATA_TYPE, 8))0, REVERSE(cond_x, 8)); +#else // defined(POOL_AVG) || defined(POOL_L2) + src_x = clamp(src_x, 0, SRC_WIDTH - 1); + VEC_DATA_TYPE(ACC_DATA_TYPE, 8) + data0 = VLOAD_AND_CONVERT_TO_ACC_DATA_TYPE(8, 0, (__global DATA_TYPE *)(src_addr + src_x.s0 * sizeof(DATA_TYPE) + y * src_stride_y)); +#endif // defined(POOL_AVG) || defined(POOL_L2 + +#if defined(POOL_L2) + // Raise to power of 2 for L2 Pooling + data0 *= data0; +#endif /* defined(POOL_L2) */ + + vdata = POOL_OP(vdata, data0); + } + + // Leftover + for(; x < end_x; ++x) + { + int src_x = x_coords + x; +#if defined(POOL_AVG) || defined(POOL_L2) + SELECT_DATA_TYPE(ACC_DATA_TYPE) + cond_x = (src_x < 0); + src_x = clamp(src_x, 0, SRC_WIDTH - 1); + ACC_DATA_TYPE data0 = select((ACC_DATA_TYPE)(*((__global DATA_TYPE *)(src_addr + src_x * sizeof(DATA_TYPE) + y * src_stride_y))), (ACC_DATA_TYPE)0, cond_x); +#else // defined(POOL_AVG) || defined(POOL_L2) + src_x = clamp(src_x, 0, SRC_WIDTH - 1); + ACC_DATA_TYPE data0 = (ACC_DATA_TYPE)(*((__global DATA_TYPE *)(src_addr + src_x * sizeof(DATA_TYPE) + y * src_stride_y))); +#endif // defined(POOL_AVG) || defined(POOL_L2) + +#if defined(POOL_L2) + // Raise to power of 2 for L2 Pooling + data0 *= data0; +#endif /* defined(POOL_L2) */ + + sdata = POOL_OP(sdata, data0); + } + } + } + + // Reduce result + VEC_DATA_TYPE(ACC_DATA_TYPE, 4) + reduce4 = POOL_OP(vdata.s0123, vdata.s4567); + VEC_DATA_TYPE(ACC_DATA_TYPE, 2) + reduce2 = POOL_OP(reduce4.s01, reduce4.s23); + ACC_DATA_TYPE res = POOL_OP(reduce2.s0, reduce2.s1); + res = POOL_OP(res, sdata); + +#if defined(POOL_AVG) || defined(POOL_L2) + // Divide by pool region in case of average pooling + res = DIV_OP(res, calculate_avg_scale(POOL_SIZE_X, POOL_SIZE_Y, MAX_WIDTH, MAX_HEIGHT, PAD_X, PAD_Y, STRIDE_X, STRIDE_Y)); +#endif /* defined(POOL_AVG) || defined(POOL_L2) */ + +#if defined(QUANTIZED) + + DATA_TYPE result_q8 = CONVERT(res, DATA_TYPE); + +#if defined(OFFSET_IN1) && defined(OFFSET_OUT) && defined(SCALE_IN1) && defined(SCALE_OUT) + + const float result_f32 = convert_float(result_q8); + const float input_offset = (float)OFFSET_IN1; + const float input_scale = (float)SCALE_IN1; + const float scale_out = (float)SCALE_OUT; + const float offset_out = (float)OFFSET_OUT; + const float in_f32 = (result_f32 - input_offset) * input_scale; + const float out_f32 = in_f32 / scale_out + offset_out; + result_q8 = CONVERT_SAT(convert_int_rte(out_f32), DATA_TYPE); + +#endif /* defined(OFFSET_IN1) && defined(OFFSET_OUT) && defined(SCALE_IN1) && defined(SCALE_OUT) */ + + *(__global DATA_TYPE *)(dst_ptr + dst_offset_first_element_in_bytes + id0 * sizeof(DATA_TYPE) + id1 * dst_stride_y + id2 * dst_stride_z) = result_q8; + +#else // defined(QUANTIZED) + +#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 *)(dst_ptr + dst_offset_first_element_in_bytes + id0 * sizeof(DATA_TYPE) + id1 * dst_stride_y + id2 * dst_stride_z) = (DATA_TYPE)res; +#endif // defined(QUANTIZED) +} +#endif // defined(POOL_SIZE_X) && defined(POOL_SIZE_Y) + +/** Performs a MAX pooling of pool size equal to 2, and record max value indices for NCHW. + * + * @note Datatype must be passed using -DDATA_TYPE e.g. -DDATA_TYPE=half. Supported data types are F32 + * @note Pool sizes must be passed using -DPOOL_SIZE_X and -DPOOL_SIZE_Y e.g. -DPOOL_SIZE_X=13; + * @note Tensors width and height must be passed at compile time using -DMAX_WIDTH and -DMAX_HEIGHT + * @note Pool strides must be passed at compile time using -DSTRIDE_X and -DSTRIDE_Y which are the steps of the window along the x and y directions + * + * @param[in] src_ptr Pointer to the source tensor. Supported data types: F16/F32 + * @param[in] src_stride_x Stride of the 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 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 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_offset_first_element_in_bytes The offset of the first element in the 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 dst_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 dst_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] dst_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] dst_step_z dst_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 + * @param[in] indices_ptr Pointer to the indices tensor. Supported data types: U32 + * @param[in] indices_stride_x Stride of the indices tensor in X dimension (in bytes) + * @param[in] indices_step_x indices_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] indices_stride_y Stride of the indices tensor in Y dimension (in bytes) + * @param[in] indices_step_y indices_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] indices_stride_z Stride of the indices tensor in Z dimension (in bytes) + * @param[in] indices_step_z indices_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] indices_offset_first_element_in_bytes The offset of the first element in the indices tensor + */ +__kernel void pooling_layer_2_nchw_indices( + TENSOR3D_DECLARATION(src), + TENSOR3D_DECLARATION(dst), + TENSOR3D_DECLARATION(indices)) +{ + int id0 = get_global_id(0); + int id1 = get_global_id(1); + int id2 = get_global_id(2); + + int2 x_coords = clamp((int2)((id0 * STRIDE_X) - PAD_X), (int2)0, (int2)(SRC_WIDTH - 1)); + int2 y_coords = clamp((int2)((id1 * STRIDE_Y) - PAD_Y) + VEC_OFFS(int, 2), (int2)0, (int2)(SRC_HEIGHT - 1)); + + __global uchar *src_addr = src_ptr + src_offset_first_element_in_bytes + id2 * src_stride_z; + + // Load data + VEC_DATA_TYPE(DATA_TYPE, 2) + data0 = VLOAD(2)(0, (__global DATA_TYPE *)(src_addr + x_coords.s0 * sizeof(DATA_TYPE) + y_coords.s0 * (int)src_stride_y)); + VEC_DATA_TYPE(DATA_TYPE, 2) + data1 = VLOAD(2)(0, (__global DATA_TYPE *)(src_addr + x_coords.s1 * sizeof(DATA_TYPE) + y_coords.s1 * (int)src_stride_y)); + + // Perform calculations + DATA_TYPE data0_max = POOL_OP(data0.s0, data0.s1); + DATA_TYPE data1_max = POOL_OP(data1.s0, data1.s1); + DATA_TYPE res = POOL_OP(data0_max, data1_max); + // Store result + *(__global DATA_TYPE *)(dst_ptr + dst_offset_first_element_in_bytes + id0 * sizeof(DATA_TYPE) + id1 * dst_stride_y + id2 * dst_stride_z) = res; + +#if defined(SRC_BATCH) + + uint offset_top = (x_coords.s0 + y_coords.s0 * SRC_WIDTH + id2 * (SRC_WIDTH * SRC_HEIGHT)) % SRC_BATCH; + uint offset_bottom = offset_top + SRC_WIDTH; + + uint index0 = select(offset_top + 1, offset_top, isgreaterequal(data0.s0, data0.s1)); + uint index1 = select(offset_bottom + 1, offset_bottom, isgreaterequal(data1.s0, data1.s1)); + uint index = select(index1, index0, isgreaterequal(data0_max, data1_max)); + + *(__global uint *)(indices_ptr + indices_offset_first_element_in_bytes + id0 * sizeof(uint) + id1 * indices_stride_y + id2 * indices_stride_z) = index; + +#endif // defined(SRC_BATCH) +}
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