Function reorder

src/backend/cuda/kernel/reorder.hpp:23–48

template<typename T>
void reorder(Param<T> out, CParam<T> in, const dim_t *rdims) {
    constexpr unsigned TX    = 32;
    constexpr unsigned TY    = 8;
    constexpr unsigned TILEX = 512;
    constexpr unsigned TILEY = 32;

    auto reorder =
        common::getKernel("arrayfire::cuda::reorder", {{reorder_cuh_src}},
                          TemplateArgs(TemplateTypename<T>()));

    dim3 threads(TX, TY, 1);

    int blocksPerMatX = divup(out.dims[0], TILEX);
    int blocksPerMatY = divup(out.dims[1], TILEY);
    dim3 blocks(blocksPerMatX * out.dims[2], blocksPerMatY * out.dims[3], 1);

    const int maxBlocksY = getDeviceProp(getActiveDeviceId()).maxGridSize[1];
    blocks.z             = divup(blocks.y, maxBlocksY);
    blocks.y             = divup(blocks.y, blocks.z);

    EnqueueArgs qArgs(blocks, threads, getActiveStream());

    reorder(qArgs, out, in, rdims[0], rdims[1], rdims[2], rdims[3],
            blocksPerMatX, blocksPerMatY);
    POST_LAUNCH_CHECK();
}

}  // namespace kernel
}  // namespace cuda