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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 2009, 2010-2012, 2014, 2016 Université de Bordeaux
* Copyright (C) 2010, 2011, 2012, 2013, 2016 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 <config.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <starpu.h>
#include <stdlib.h>
#include "../helper.h"
/*
* Test initializing a buffer with a task, then printing it with another task
*/
#define VECTORSIZE 1024
starpu_data_handle_t v_handle;
#ifdef STARPU_USE_OPENCL
static void opencl_codelet_null(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
{
STARPU_SKIP_IF_VALGRIND;
cl_mem buf = (cl_mem)STARPU_VECTOR_GET_DEV_HANDLE(descr[0]);
char ptr = 42;
cl_command_queue queue;
int id = starpu_worker_get_id_check();
int devid = starpu_worker_get_devid(id);
starpu_opencl_get_queue(devid, &queue);
clEnqueueWriteBuffer(queue, buf, CL_TRUE, 0, sizeof(char), &ptr, 0, NULL, NULL);
}
#endif
#ifdef STARPU_USE_CUDA
static void cuda_codelet_null(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
{
STARPU_SKIP_IF_VALGRIND;
char *buf = (char *)STARPU_VECTOR_GET_PTR(descr[0]);
cudaMemsetAsync(buf, 42, 1, starpu_cuda_get_local_stream());
}
#endif
void cpu_codelet_null(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
{
char *buf = (char *)STARPU_VECTOR_GET_PTR(descr[0]);
*buf = 42;
}
void display_var(void *descr[], STARPU_ATTRIBUTE_UNUSED void *_args)
{
STARPU_SKIP_IF_VALGRIND;
char *buf = (char *)STARPU_VECTOR_GET_PTR(descr[0]);
if (*buf != 42)
{
FPRINTF(stderr, "Value = <%c> (should be <%c>)\n", *buf, 42);
exit(-1);
}
}
static struct starpu_codelet cl =
{
.cpu_funcs = {cpu_codelet_null},
#ifdef STARPU_USE_CUDA
.cuda_funcs = {cuda_codelet_null},
.cuda_flags = {STARPU_CUDA_ASYNC},
#endif
#ifdef STARPU_USE_OPENCL
.opencl_funcs = {opencl_codelet_null},
.opencl_flags = {STARPU_OPENCL_ASYNC},
#endif
.cpu_funcs_name = {"cpu_codelet_null"},
.nbuffers = 1,
.modes = {STARPU_W}
};
static struct starpu_codelet display_cl =
{
.cpu_funcs = {display_var},
.cpu_funcs_name = {"display_var"},
.nbuffers = 1,
.modes = {STARPU_R}
};
int main(int argc, char **argv)
{
int ret;
ret = starpu_initialize(NULL, &argc, &argv);
if (ret == -ENODEV) return STARPU_TEST_SKIPPED;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
/* The buffer should never be explicitely allocated */
starpu_vector_data_register(&v_handle, (uint32_t)-1, (uintptr_t)NULL, VECTORSIZE, sizeof(char));
struct starpu_task *task = starpu_task_create();
task->cl = &cl;
task->handles[0] = v_handle;
task->detach = 0;
ret = starpu_task_submit(task);
if (ret == -ENODEV) goto enodev;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
ret = starpu_task_wait(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_wait");
task = starpu_task_create();
task->cl = &display_cl;
task->handles[0] = v_handle;
task->detach = 0;
ret = starpu_task_submit(task);
if (ret == -ENODEV) goto enodev;
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_submit");
ret = starpu_task_wait(task);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_task_wait");
/* this should get rid of automatically allocated buffers */
starpu_data_unregister(v_handle);
starpu_shutdown();
return EXIT_SUCCESS;
enodev:
starpu_data_unregister(v_handle);
starpu_shutdown();
fprintf(stderr, "WARNING: No one can execute this task\n");
/* yes, we do not perform the computation but we did detect that no one
* could perform the kernel, so this is not an error from StarPU */
return STARPU_TEST_SKIPPED;
}
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