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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2012 CNRS
*
* 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 "complex_interface.h"
static __global__ void complex_copy_cuda(double *o_real, double *o_imaginary, double *i_real, double *i_imaginary, unsigned n)
{
unsigned i = blockIdx.x*blockDim.x + threadIdx.x;
if (i < n)
{
o_real[i] = i_real[i];
o_imaginary[i] = i_imaginary[i];
}
}
extern "C" void copy_complex_codelet_cuda(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
{
(void)_args;
int nx = STARPU_COMPLEX_GET_NX(descr[0]);
double *i_real = STARPU_COMPLEX_GET_REAL(descr[0]);
double *i_imaginary = STARPU_COMPLEX_GET_IMAGINARY(descr[0]);
double *o_real = STARPU_COMPLEX_GET_REAL(descr[1]);
double *o_imaginary = STARPU_COMPLEX_GET_IMAGINARY(descr[1]);
unsigned threads_per_block = 64;
unsigned nblocks = (nx + threads_per_block-1) / threads_per_block;
complex_copy_cuda<<<nblocks, threads_per_block, 0, starpu_cuda_get_local_stream()>>>(o_real, o_imaginary, i_real, i_imaginary, nx);
}
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