1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/* 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 multiformat_cuda(struct struct_of_arrays *soa, unsigned n)
{
unsigned i = blockIdx.x*blockDim.x + threadIdx.x;
if (i < n)
soa->x[i] *= soa->y[i];
}
extern "C" void multiformat_scal_cuda_func(void *buffers[], void *_args)
{
(void) _args;
FPRINTF(stderr, "Running the cuda kernel (%s)\n", __func__);
unsigned int n = STARPU_MULTIFORMAT_GET_NX(buffers[0]);
struct struct_of_arrays *soa;
soa = (struct struct_of_arrays *) STARPU_MULTIFORMAT_GET_CUDA_PTR(buffers[0]);
unsigned threads_per_block = 64;
unsigned nblocks = (n + threads_per_block-1) / threads_per_block;
multiformat_cuda<<<nblocks,threads_per_block,2,starpu_cuda_get_local_stream()>>>(soa, n);
cudaStreamSynchronize(starpu_cuda_get_local_stream());
}
|
