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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2010, 2011 Université de Bordeaux 1
* Copyright (C) 2010, 2011, 2012 Centre National de la Recherche Scientifique
*
* 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 <pthread.h>
#define FPRINTF(ofile, fmt, args ...) do { if (!getenv("STARPU_SSILENT")) {fprintf(ofile, fmt, ##args); }} while(0)
static unsigned niter = 50000;
extern void cpu_codelet(void *descr[], __attribute__ ((unused)) void *_args);
#ifdef STARPU_USE_CUDA
extern void cuda_codelet(void *descr[], __attribute__ ((unused)) void *_args);
#endif
#ifdef STARPU_USE_OPENCL
#include <starpu_opencl.h>
extern void opencl_codelet(void *descr[], __attribute__ ((unused)) void *_args);
struct starpu_opencl_program opencl_program;
#endif
int main(int argc, char **argv)
{
unsigned i;
float foo;
starpu_data_handle_t float_array_handle;
struct starpu_codelet cl = {};
int ret;
ret = starpu_init(NULL);
if (ret == -ENODEV) goto enodev;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
#ifdef STARPU_SLOW_MACHINE
niter /= 100;
#endif
if (argc == 2) niter = atoi(argv[1]);
foo = 0.0f;
starpu_variable_data_register(&float_array_handle, 0 /* home node */,
(uintptr_t)&foo, sizeof(float));
#ifdef STARPU_USE_OPENCL
ret = starpu_opencl_load_opencl_from_file("examples/basic_examples/variable_kernels_opencl_kernel.cl", &opencl_program, NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_opencl_from_file");
#endif
cl.where = STARPU_CPU|STARPU_CUDA|STARPU_OPENCL;
cl.cpu_funcs[0] = cpu_codelet;
#ifdef STARPU_USE_CUDA
cl.cuda_funcs[0] = cuda_codelet;
#endif
#ifdef STARPU_USE_OPENCL
cl.opencl_funcs[0] = opencl_codelet;
#endif
cl.nbuffers = 1;
cl.modes[0] = STARPU_RW;
cl.model = NULL;
for (i = 0; i < niter; i++)
{
struct starpu_task *task = starpu_task_create();
int ret;
task->cl = &cl;
task->callback_func = NULL;
task->handles[0] = float_array_handle;
ret = starpu_task_submit(task);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "No worker may execute this task\n");
exit(0);
}
}
starpu_task_wait_for_all();
/* update the array in RAM */
starpu_data_unregister(float_array_handle);
FPRINTF(stderr, "variable -> %f\n", foo);
starpu_shutdown();
return 0;
enodev:
starpu_shutdown();
return 77;
}
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