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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 <math.h>
#include "helper.h"
void func_cpu(void *descr[], __attribute__ ((unused)) void *_args)
{
int node;
int rank;
starpu_codelet_unpack_args(_args, &node);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
FPRINTF(stderr, "Expected node: %d - Actual node: %d\n", node, rank);
assert(node == rank);
}
struct starpu_codelet mycodelet_r_w =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 2,
.modes = {STARPU_R, STARPU_W}
};
struct starpu_codelet mycodelet_rw_r =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 2,
.modes = {STARPU_RW, STARPU_R}
};
struct starpu_codelet mycodelet_rw_rw =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 2,
.modes = {STARPU_RW, STARPU_RW}
};
struct starpu_codelet mycodelet_w_r =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 2,
.modes = {STARPU_W, STARPU_R}
};
struct starpu_codelet mycodelet_r_r =
{
.where = STARPU_CPU,
.cpu_funcs = {func_cpu, NULL},
.nbuffers = 2,
.modes = {STARPU_R, STARPU_R}
};
int main(int argc, char **argv)
{
int ret, rank, size, err, node;
int x0=32, x1=23;
starpu_data_handle_t data_handlesx0;
starpu_data_handle_t data_handlesx1;
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 (size != 2)
{
if (rank == 0) FPRINTF(stderr, "We need exactly 2 processes.\n");
starpu_mpi_shutdown();
starpu_shutdown();
return STARPU_TEST_SKIPPED;
}
if (rank == 0)
{
starpu_variable_data_register(&data_handlesx0, 0, (uintptr_t)&x0, sizeof(x0));
starpu_data_set_rank(data_handlesx0, rank);
starpu_data_set_tag(data_handlesx0, 0);
starpu_variable_data_register(&data_handlesx1, -1, (uintptr_t)NULL, sizeof(int));
starpu_data_set_rank(data_handlesx1, 1);
starpu_data_set_tag(data_handlesx1, 1);
}
else if (rank == 1)
{
starpu_variable_data_register(&data_handlesx1, 0, (uintptr_t)&x1, sizeof(x1));
starpu_data_set_rank(data_handlesx1, rank);
starpu_data_set_tag(data_handlesx1, 1);
starpu_variable_data_register(&data_handlesx0, -1, (uintptr_t)NULL, sizeof(int));
starpu_data_set_rank(data_handlesx0, 0);
starpu_data_set_tag(data_handlesx0, 0);
}
node = starpu_data_get_rank(data_handlesx1);
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_r_w,
STARPU_VALUE, &node, sizeof(node),
STARPU_R, data_handlesx0, STARPU_W, data_handlesx1,
0);
assert(err == 0);
node = starpu_data_get_rank(data_handlesx0);
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_rw_r,
STARPU_VALUE, &node, sizeof(node),
STARPU_RW, data_handlesx0, STARPU_R, data_handlesx1,
0);
assert(err == 0);
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_rw_rw,
STARPU_VALUE, &node, sizeof(node),
STARPU_RW, data_handlesx0, STARPU_RW, data_handlesx1,
0);
assert(err == -EINVAL);
node = 1;
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_rw_rw,
STARPU_VALUE, &node, sizeof(node),
STARPU_RW, data_handlesx0, STARPU_RW, data_handlesx1, STARPU_EXECUTE_ON_NODE, node,
0);
assert(err == 0);
node = 0;
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_rw_rw,
STARPU_VALUE, &node, sizeof(node),
STARPU_RW, data_handlesx0, STARPU_RW, data_handlesx1, STARPU_EXECUTE_ON_NODE, node,
0);
assert(err == 0);
node = 0;
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_r_r,
STARPU_VALUE, &node, sizeof(node),
STARPU_R, data_handlesx0, STARPU_R, data_handlesx1, STARPU_EXECUTE_ON_NODE, node,
0);
assert(err == 0);
/* Here the value specified by the property STARPU_EXECUTE_ON_NODE is
going to overwrite the node even though the data model clearly specifies
which node is going to execute the codelet */
node = 0;
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_r_w,
STARPU_VALUE, &node, sizeof(node),
STARPU_R, data_handlesx0, STARPU_W, data_handlesx1, STARPU_EXECUTE_ON_NODE, node,
0);
assert(err == 0);
/* Here the value specified by the property STARPU_EXECUTE_ON_NODE is
going to overwrite the node even though the data model clearly specifies
which node is going to execute the codelet */
node = 0;
err = starpu_mpi_insert_task(MPI_COMM_WORLD, &mycodelet_w_r,
STARPU_VALUE, &node, sizeof(node),
STARPU_W, data_handlesx0, STARPU_R, data_handlesx1, STARPU_EXECUTE_ON_NODE, node,
0);
assert(err == 0);
fprintf(stderr, "Waiting ...\n");
starpu_task_wait_for_all();
starpu_mpi_shutdown();
starpu_shutdown();
return 0;
}
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