concat.cl 3.17 KB
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#if defined(cl_khr_fp16)
#pragma OPENCL EXTENSION cl_khr_fp16 : enable
#endif

#define CONCAT(A,B) A##_##B
#define TEMPLATE(name,type) CONCAT(name,type)

__kernel void TEMPLATE(concat, Dtype)(const int nthreads,
                                      __global const Dtype* in_data,
                                      const int num_concats,
                                      const int concat_size,
                                      const int top_concat_axis,
                                      const int bottom_concat_axis,
                                      const int offset_concat_axis,
                                      __global Dtype* out_data)
{
    for (int index = get_global_id(0); index < nthreads; index += get_global_size(0))
    {
        const int total_concat_size = concat_size * bottom_concat_axis;
        const int concat_num = index / total_concat_size;
        const int concat_index = index % total_concat_size;
        const int top_index = concat_index +
                              (concat_num * top_concat_axis + offset_concat_axis) * concat_size;
        out_data[top_index] = in_data[index];
    }
}