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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2010-2016 CNRS
* Copyright (C) 2013 Inria
* Copyright (C) 2009-2011,2013-2015 Université de Bordeaux
*
* 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.
*/
/*
* This shows how to load OpenCL programs, either from a .cl file, or from a
* string containing the program itself.
*/
#include <starpu.h>
#define FPRINTF(ofile, fmt, ...) do { if (!getenv("STARPU_SSILENT")) {fprintf(ofile, fmt, ## __VA_ARGS__); }} while(0)
#ifdef STARPU_USE_OPENCL
extern void opencl_codelet(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args);
struct starpu_opencl_program opencl_program;
#endif
struct starpu_codelet cl =
{
#ifdef STARPU_USE_OPENCL
.opencl_funcs = {opencl_codelet},
.opencl_flags = {STARPU_OPENCL_ASYNC},
#endif
.nbuffers = 1,
.modes = {STARPU_RW}
};
int compute(char *file_name, int load_as_file, int with_malloc)
{
float float_array[4] STARPU_ATTRIBUTE_ALIGNED(16) = { 0.0f, 0.0f, 0.0f, 0.0f};
starpu_data_handle_t float_array_handle;
unsigned i;
int ret = 0;
#ifdef STARPU_QUICK_CHECK
unsigned niter = 50;
#else
unsigned niter = 500;
#endif
starpu_vector_data_register(&float_array_handle, STARPU_MAIN_RAM, (uintptr_t)&float_array, 4, sizeof(float));
#ifdef STARPU_USE_OPENCL
if (load_as_file)
{
ret = starpu_opencl_compile_opencl_from_file(file_name, NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_compile_opencl_from_file");
ret = starpu_opencl_load_binary_opencl(file_name, &opencl_program);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_binary_opencl");
}
else if (with_malloc)
{
char *located_file_name;
char *located_dir_name;
char *opencl_program_source;
starpu_opencl_load_program_source_malloc(file_name, &located_file_name, &located_dir_name, &opencl_program_source);
ret = starpu_opencl_compile_opencl_from_string(opencl_program_source, "incrementer", NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_compile_opencl_from_file");
ret = starpu_opencl_load_binary_opencl("incrementer", &opencl_program);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_binary_opencl");
free(located_file_name);
free(located_dir_name);
free(opencl_program_source);
}
else
{
char located_file_name[1024];
char located_dir_name[1024];
char opencl_program_source[16384];
starpu_opencl_load_program_source(file_name, located_file_name, located_dir_name, opencl_program_source);
ret = starpu_opencl_compile_opencl_from_string(opencl_program_source, "incrementer", NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_compile_opencl_from_file");
ret = starpu_opencl_load_binary_opencl("incrementer", &opencl_program);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_binary_opencl");
}
#endif
for (i = 0; i < niter; i++)
{
ret = starpu_task_insert(&cl, STARPU_RW, float_array_handle, STARPU_TAG_ONLY, (starpu_tag_t) i, 0);
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);
#ifdef STARPU_USE_OPENCL
starpu_opencl_unload_opencl(&opencl_program);
#endif
FPRINTF(stderr, "array -> %f, %f, %f, %f\n", float_array[0], float_array[1], float_array[2], float_array[3]);
if (float_array[0] != niter || float_array[0] != float_array[1] + float_array[2] + float_array[3])
{
FPRINTF(stderr, "Incorrect result\n");
ret = 1;
}
return ret;
}
int main(int argc, char **argv)
{
int ret = 0;
struct starpu_conf conf;
starpu_conf_init(&conf);
conf.ncpus = 0;
conf.ncuda = 0;
conf.nmic = 0;
conf.nscc = 0;
ret = starpu_init(&conf);
if (STARPU_UNLIKELY(ret == -ENODEV))
{
FPRINTF(stderr, "This application requires an OpenCL worker.\n");
return 77;
}
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
ret = compute("examples/incrementer/incrementer_kernels_opencl_kernel.cl", 1, -1);
if (ret == 0)
ret = compute("examples/incrementer/incrementer_kernels_opencl_kernel.cl", 0, 0);
else
FPRINTF(stderr, "Error when calling compute %d\n", ret);
if (ret == 0)
ret = compute("examples/incrementer/incrementer_kernels_opencl_kernel.cl", 0, 1);
else
FPRINTF(stderr, "Error when calling compute %d\n", ret);
starpu_shutdown();
return ret;
}
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