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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 <starpu_opencl.h>
#define NX 5
#define NY 4
#define NZ 3
#define PARTS 2
#define FPRINTF(ofile, fmt, args ...) do { if (!getenv("STARPU_SSILENT")) {fprintf(ofile, fmt, ##args); }} while(0)
extern void cpu_func(void *buffers[], void *cl_arg);
#ifdef STARPU_USE_CUDA
extern void cuda_func(void *buffers[], void *cl_arg);
#endif
#ifdef STARPU_USE_OPENCL
extern void opencl_func(void *buffers[], void *cl_arg);
#endif
void print_block(int *block, int nx, int ny, int nz, unsigned ldy, unsigned ldz)
{
int i, j, k;
FPRINTF(stderr, "block=%p nx=%d ny=%d nz=%d ldy=%u ldz=%u\n", block, nx, ny, nz, ldy, ldz);
for(k=0 ; k<nz ; k++)
{
for(j=0 ; j<ny ; j++)
{
for(i=0 ; i<nx ; i++)
{
FPRINTF(stderr, "%2d ", block[(k*ldz)+(j*ldy)+i]);
}
FPRINTF(stderr,"\n");
}
FPRINTF(stderr,"\n");
}
FPRINTF(stderr,"\n");
}
void print_data(starpu_data_handle_t block_handle)
{
int *block = (int *)starpu_block_get_local_ptr(block_handle);
int nx = starpu_block_get_nx(block_handle);
int ny = starpu_block_get_ny(block_handle);
int nz = starpu_block_get_nz(block_handle);
unsigned ldy = starpu_block_get_local_ldy(block_handle);
unsigned ldz = starpu_block_get_local_ldz(block_handle);
print_block(block, nx, ny, nz, ldy, ldz);
}
#ifdef STARPU_USE_OPENCL
struct starpu_opencl_program opencl_program;
#endif
int main(int argc, char **argv)
{
int *block,n=0;
int i, j, k;
int ret;
block = (int*)malloc(NX*NY*NZ*sizeof(block[0]));
assert(block);
for(k=0 ; k<NZ ; k++)
{
for(j=0 ; j<NY ; j++)
{
for(i=0 ; i<NX ; i++)
{
block[(k*NX*NY)+(j*NX)+i] = n++;
}
}
}
starpu_data_handle_t handle;
struct starpu_codelet cl =
{
.where = STARPU_CPU|STARPU_CUDA|STARPU_OPENCL,
.cpu_funcs = {cpu_func, NULL},
#ifdef STARPU_USE_CUDA
.cuda_funcs = {cuda_func, NULL},
#endif
#ifdef STARPU_USE_OPENCL
.opencl_funcs = {opencl_func, NULL},
#endif
.nbuffers = 1,
.modes = {STARPU_RW}
};
ret = starpu_init(NULL);
if (ret == -ENODEV)
exit(77);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
#ifdef STARPU_USE_OPENCL
ret = starpu_opencl_load_opencl_from_file("examples/filters/fblock_opencl_kernel.cl", &opencl_program, NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_opencl_load_opencl_from_file");
#endif
/* Declare data to StarPU */
starpu_block_data_register(&handle, 0, (uintptr_t)block, NX, NX*NY, NX, NY, NZ, sizeof(int));
FPRINTF(stderr, "IN Block\n");
print_data(handle);
/* Partition the block in PARTS sub-blocks */
struct starpu_data_filter f =
{
.filter_func = starpu_block_filter_func_block,
.nchildren = PARTS
};
starpu_data_partition(handle, &f);
FPRINTF(stderr,"Nb of partitions : %d\n",starpu_data_get_nb_children(handle));
for(i=0 ; i<starpu_data_get_nb_children(handle) ; i++)
{
starpu_data_handle_t sblock = starpu_data_get_sub_data(handle, 1, i);
FPRINTF(stderr, "Sub block %d\n", i);
print_data(sblock);
}
/* Submit a task on each sub-block */
for(i=0 ; i<starpu_data_get_nb_children(handle) ; i++)
{
int ret,multiplier=i;
struct starpu_task *task = starpu_task_create();
FPRINTF(stderr,"Dealing with sub-block %d\n", i);
task->cl = &cl;
task->synchronous = 1;
task->callback_func = NULL;
task->handles[0] = starpu_data_get_sub_data(handle, 1, i);
task->cl_arg = &multiplier;
ret = starpu_task_submit(task);
if (ret)
{
FPRINTF(stderr, "Error when submitting task\n");
exit(ret);
}
}
/* Unpartition the data, unregister it from StarPU and shutdown */
starpu_data_unpartition(handle, 0);
print_data(handle);
starpu_data_unregister(handle);
/* Print result block */
FPRINTF(stderr, "OUT Block\n");
print_block(block, NX, NY, NZ, NX, NX*NY);
free(block);
starpu_shutdown();
return 0;
}
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