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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2011 Institut National de Recherche en Informatique et Automatique
*
* StarPU is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at
* your option) any later version.
*
* StarPU is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See the GNU Lesser General Public License in COPYING.LGPL for more details.
*/
#include <starpu.h>
#include <starpu_cuda.h>
#include "multiformat_types.h"
static __global__ void cpu_to_cuda_cuda(struct point *src,
struct struct_of_arrays *dst, unsigned n)
{
unsigned i = blockIdx.x*blockDim.x + threadIdx.x;
if (i < n)
{
dst->x[i] = src[i].x;
dst->y[i] = src[i].y;
}
}
extern "C" void cpu_to_cuda_cuda_func(void *buffers[], void *_args)
{
struct point *src;
struct struct_of_arrays *dst;
src = (struct point *) STARPU_MULTIFORMAT_GET_CPU_PTR(buffers[0]);
dst = (struct struct_of_arrays *) STARPU_MULTIFORMAT_GET_CUDA_PTR(buffers[0]);
int n = STARPU_MULTIFORMAT_GET_NX(buffers[0]);
unsigned threads_per_block = 64;
unsigned nblocks = (n + threads_per_block-1) / threads_per_block;
cpu_to_cuda_cuda<<<nblocks,threads_per_block,2,starpu_cuda_get_local_stream()>>>(src, dst, n);
cudaStreamSynchronize(starpu_cuda_get_local_stream());
}
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