starpu-max/mpi/tests/checkpoints.c

/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2013-2020  Université de Bordeaux, CNRS (LaBRI UMR 5800), Inria
 *
 * 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 "helper.h"

#include <starpu_mpi_checkpoint.h>

#define ARRAY_SIZE 12

int main(int argc, char* argv[])
{
	starpu_data_handle_t h;
	starpu_data_handle_t h_array[ARRAY_SIZE];
    starpu_mpi_checkpoint_template cp_template;
    int val = 42;
    int val2 = 1234;
    int array[ARRAY_SIZE];
    int ret;
    struct starpu_conf conf;

    //init array
    for (int i=0 ; i<ARRAY_SIZE ; i++)
    {
    	array[i] = i*1111+42;
    }

	for (int i=0 ; i<ARRAY_SIZE ; i++)
	{
		h_array[i] = NULL;
	}

    starpu_conf_init(&conf);
    conf.nmic = 0;
    conf.nmpi_ms = 0;

    ret = starpu_init(&conf);
    if (STARPU_UNLIKELY(ret == -ENODEV))
    {
        return 77;
    }
    STARPU_CHECK_RETURN_VALUE(ret, "starpu_init");

    if (starpu_cpu_worker_get_count() < 1)
    {
        FPRINTF(stderr, "This application requires at least 1 cpu worker\n");
        starpu_shutdown();
        return 77;
    }

    starpu_variable_data_register(&h, STARPU_MAIN_RAM, (uintptr_t)&val2, sizeof(int));

    starpu_vector_data_register(h_array, STARPU_MAIN_RAM, (uintptr_t)array, ARRAY_SIZE, sizeof(int));
    for (int i=0 ; i<ARRAY_SIZE ; i++) {
    	starpu_variable_data_register(&h_array[i], STARPU_MAIN_RAM, (uintptr_t)&array[i], sizeof(int));
    }

    starpu_mpi_checkpoint_template_register(&cp_template,
           STARPU_VALUE, &val, sizeof(int), 1,
           STARPU_DATA_ARRAY, h_array, ARRAY_SIZE, 1,
           STARPU_R, &h, 1,
           0);
    _starpu_mpi_checkpoint_template_print(cp_template);
    return 0;
}