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/* StarPU --- Runtime system for heterogeneous multicore architectures.
*
* Copyright (C) 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_mpi.h>
#include <starpu_mpi_datatype.h>
#include <math.h>
#include "helper.h"
void func_cpu(void *descr[], __attribute__ ((unused)) void *_args)
{
int *x0 = (int *)STARPU_VARIABLE_GET_PTR(descr[0]);
int *x1 = (int *)STARPU_VARIABLE_GET_PTR(descr[1]);
int *x2 = (int *)STARPU_VARIABLE_GET_PTR(descr[2]);
int *y = (int *)STARPU_VARIABLE_GET_PTR(descr[3]);
// FPRINTF(stderr, "-------> CODELET VALUES: %d %d %d %d\n", *x0, *x1, *x2, *y);
//
// *x2 = 45;
// *y = 144;
//
FPRINTF(stderr, "-------> CODELET VALUES: %d %d %d %d\n", *x0, *x1, *x2, *y);
*y = (*x0 + *x1) * 100;
*x1 = 12;
*x2 = 24;
*x0 = 36;
FPRINTF(stderr, "-------> CODELET VALUES: %d %d %d %d\n", *x0, *x1, *x2, *y);
}
struct starpu_codelet mycodelet =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 4,
.modes = {STARPU_R, STARPU_RW, STARPU_W, STARPU_W}
};
int main(int argc, char **argv)
{
int rank, size, err;
int x[3], y=0;
int i, ret;
starpu_data_handle_t data_handles[4];
ret = starpu_init(NULL);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");
ret = starpu_mpi_initialize_extended(&rank, &size);
STARPU_CHECK_RETURN_VALUE(ret, "starpu_mpi_initialize_extended");
if (rank == 0)
{
for(i=0 ; i<3 ; i++)
{
x[i] = 10*(i+1);
starpu_variable_data_register(&data_handles[i], 0, (uintptr_t)&x[i], sizeof(x[i]));
}
y = -1;
starpu_variable_data_register(&data_handles[3], -1, (uintptr_t)NULL, sizeof(int));
}
else if (rank == 1)
{
for(i=0 ; i<3 ; i++)
{
x[i] = -1;
starpu_variable_data_register(&data_handles[i], -1, (uintptr_t)NULL, sizeof(int));
}
y=200;
starpu_variable_data_register(&data_handles[3], 0, (uintptr_t)&y, sizeof(int));
} else
{
for(i=0 ; i<4 ; i++)
starpu_variable_data_register(&data_handles[i], -1, (uintptr_t)NULL, sizeof(int));
}
FPRINTF(stderr, "[%d][init] VALUES: %d %d %d %d\n", rank, x[0], x[1], x[2], y);
for(i=0 ; i<3 ; i++)
{
starpu_data_set_rank(data_handles[i], 0);
starpu_data_set_tag(data_handles[i], i);
}
starpu_data_set_rank(data_handles[3], 1);
starpu_data_set_tag(data_handles[3], 3);
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet,
STARPU_R, data_handles[0], STARPU_RW, data_handles[1],
STARPU_W, data_handles[2],
STARPU_W, data_handles[3],
STARPU_EXECUTE_ON_NODE, 1, 0);
STARPU_CHECK_RETURN_VALUE(err, "starpu_mpi_insert_task");
starpu_task_wait_for_all();
int *values = malloc(4 * sizeof(int *));
for(i=0 ; i<4 ; i++)
{
starpu_mpi_get_data_on_node_detached(MPI_COMM_WORLD, data_handles[i], 0, NULL, NULL);
if (rank == 0) {
starpu_data_acquire(data_handles[i], STARPU_R);
values[i] = *((int *)starpu_mpi_handle_to_ptr(data_handles[i]));
}
}
FPRINTF(stderr, "[%d][local ptr] VALUES: %d %d %d %d\n", rank, values[0], values[1], values[2], values[3]);
FPRINTF(stderr, "[%d][end] VALUES: %d %d %d %d\n", rank, x[0], x[1], x[2], y);
starpu_mpi_shutdown();
starpu_shutdown();
return 0;
}
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