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- /* StarPU --- Runtime system for heterogeneous multicore architectures.
- *
- * Copyright (C) 2010 Université de Bordeaux 1
- * Copyright (C) 2010, 2011 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 <stdio.h>
- #include <unistd.h>
- #include <errno.h>
- #include <starpu.h>
- #include <stdlib.h>
- #define VECTORSIZE 1024
- #define FPRINTF(ofile, fmt, args ...) do { if (!getenv("STARPU_SSILENT")) {fprintf(ofile, fmt, ##args); }} while(0)
- static unsigned *A, *B, *C, *D;
- starpu_data_handle A_handle, B_handle, C_handle, D_handle;
- static unsigned var = 0;
- static void f(void *descr[], __attribute__ ((unused)) void *_args)
- {
- usleep(200000);
- }
- static starpu_codelet cl_f = {
- .where = STARPU_CPU|STARPU_CUDA,
- .cpu_func = f,
- .cuda_func = f,
- .nbuffers = 2
- };
- static void g(void *descr[], __attribute__ ((unused)) void *_args)
- {
- usleep(100000);
- var = 42;
- }
- static starpu_codelet cl_g = {
- .where = STARPU_CPU|STARPU_CUDA,
- .cpu_func = g,
- .cuda_func = g,
- .nbuffers = 2
- };
- static void h(void *descr[], __attribute__ ((unused)) void *_args)
- {
- FPRINTF(stderr, "VAR %u (should be 42)\n", var);
- STARPU_ASSERT(var == 42);
- }
- static starpu_codelet cl_h = {
- .where = STARPU_CPU|STARPU_CUDA,
- .cpu_func = h,
- .cuda_func = h,
- .nbuffers = 2
- };
- int main(int argc, char **argv)
- {
- starpu_init(NULL);
- A = malloc(VECTORSIZE*sizeof(unsigned));
- B = malloc(VECTORSIZE*sizeof(unsigned));
- C = malloc(VECTORSIZE*sizeof(unsigned));
- D = malloc(VECTORSIZE*sizeof(unsigned));
- starpu_vector_data_register(&A_handle, 0, (uintptr_t)A, VECTORSIZE, sizeof(unsigned));
- starpu_vector_data_register(&B_handle, 0, (uintptr_t)B, VECTORSIZE, sizeof(unsigned));
- starpu_vector_data_register(&C_handle, 0, (uintptr_t)C, VECTORSIZE, sizeof(unsigned));
- starpu_vector_data_register(&D_handle, 0, (uintptr_t)D, VECTORSIZE, sizeof(unsigned));
- #if 0
- starpu_data_set_sequential_consistency_flag(A_handle, 0);
- starpu_data_set_sequential_consistency_flag(B_handle, 0);
- starpu_data_set_sequential_consistency_flag(C_handle, 0);
- starpu_data_set_sequential_consistency_flag(D_handle, 0);
- #endif
- /* f(Ar, Brw): sleep
- * g(Br; Crw); sleep, var = 42
- * h(Cr; Drw); check that var == 42
- */
- struct starpu_task *task_f = starpu_task_create();
- task_f->cl = &cl_f;
- task_f->buffers[0].handle = A_handle;
- task_f->buffers[0].mode = STARPU_R;
- task_f->buffers[1].handle = B_handle;
- task_f->buffers[1].mode = STARPU_RW;
- starpu_task_submit(task_f);
- struct starpu_task *task_g = starpu_task_create();
- task_g->cl = &cl_g;
- task_g->buffers[0].handle = B_handle;
- task_g->buffers[0].mode = STARPU_R;
- task_g->buffers[1].handle = C_handle;
- task_g->buffers[1].mode = STARPU_RW;
- starpu_task_submit(task_g);
- struct starpu_task *task_h = starpu_task_create();
- task_h->cl = &cl_h;
- task_h->buffers[0].handle = C_handle;
- task_h->buffers[0].mode = STARPU_R;
- task_h->buffers[1].handle = D_handle;
- task_h->buffers[1].mode = STARPU_RW;
- starpu_task_submit(task_h);
- starpu_task_wait_for_all();
- free(A);
- free(B);
- free(C);
- free(D);
- starpu_shutdown();
- return 0;
- }
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