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42 lines
1.4 KiB
Plaintext
42 lines
1.4 KiB
Plaintext
#include "cuda_utils.cuh"
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#include<stdint.h>
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#define WHERE_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 *info, \
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const uint32_t *ids, \
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const TYPENAME *t, \
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const TYPENAME *f, \
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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 *strides_t = info + 2*num_dims; \
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const size_t *strides_f = info + 3*num_dims; \
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if (is_contiguous(num_dims, dims, strides) \
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&& is_contiguous(num_dims, dims, strides_f) \
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&& is_contiguous(num_dims, dims, strides_t)) { \
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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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out[i] = ids[i] ? t[i] : f[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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unsigned strided_i_t = get_strided_index(i, num_dims, dims, strides_t); \
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unsigned strided_i_f = get_strided_index(i, num_dims, dims, strides_f); \
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out[i] = ids[strided_i] ? t[strided_i_t] : f[strided_i_f]; \
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} \
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} \
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} \
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#if __CUDA_ARCH__ >= 530
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WHERE_OP(__half, where_f16)
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#endif
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WHERE_OP(float, where_f32)
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WHERE_OP(double, where_f64)
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WHERE_OP(uint32_t, where_u32)
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