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47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
#include "cuda_utils.cuh"
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#include<stdint.h>
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#define SUM_OP(TYPENAME, FN_NAME) \
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extern "C" __global__ void FN_NAME( \
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const size_t numel, \
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const size_t num_dims, \
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const size_t num_sum_dims, \
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const size_t *info, \
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const TYPENAME *inp, \
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TYPENAME *out \
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) { \
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const size_t *dims = info; \
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const size_t *strides = info + num_dims; \
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const size_t *sum_dims_l = info + 2*num_dims; \
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const size_t *sum_dims_s = info + 2*num_dims + num_sum_dims; \
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if (is_contiguous(num_dims, dims, strides)) { \
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for (unsigned int i = blockIdx.x * blockDim.x + threadIdx.x; i < numel; i += blockDim.x * gridDim.x) { \
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size_t dst_index = i; \
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for (unsigned int nd = 0; nd < num_sum_dims; ++nd) { \
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size_t stride = sum_dims_s[nd]; \
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size_t pre = dst_index / stride; \
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size_t post = dst_index / stride; \
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dst_index = (pre / sum_dims_l[nd]) * stride + post; \
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} \
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out[dst_index] += inp[i]; \
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} \
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} \
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else { \
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for (unsigned int i = blockIdx.x * blockDim.x + threadIdx.x; i < numel; i += blockDim.x * gridDim.x) { \
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unsigned strided_i = get_strided_index(i, num_dims, dims, strides); \
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size_t dst_index = i; \
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for (unsigned int nd = 0; nd < num_sum_dims; ++nd) { \
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size_t stride = sum_dims_s[nd]; \
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size_t pre = dst_index / stride; \
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size_t post = dst_index / stride; \
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dst_index = (pre / sum_dims_l[nd]) * stride + post; \
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} \
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out[dst_index] += inp[strided_i]; \
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} \
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} \
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} \
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SUM_OP(float, sum_f32)
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SUM_OP(double, sum_f64)
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SUM_OP(uint32_t, sum_u32)
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