/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *  (C) 2006 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "mpi.h"

int main(int argc, char **argv)

{

    char *p;

    int errs = 0, toterrs;

    int size, rank;

    MPI_Init(&argc, &argv);

    MPI_Comm_size(MPI_COMM_WORLD, &size);

    if (size != 2) {

        errs++;

        printf("Communicator size is %d, should be 2\n", size);

    }

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    p = getenv("TMP_ENV_VAR");

    if (!p) {

        errs++;

        printf("Did not find TMP_ENV_VAR\n");

    } else if (strcmp(p, "1") != 0) {

        errs++;

        printf("Value of TMP_ENV_VAR was %s, expected 1\n", p);

    }

    MPI_Reduce(&errs, &toterrs, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_WORLD);

    if (rank == 0) {

        if (toterrs == 0) {

            printf(" No Errors\n");

        } else {

            printf(" Found %d errors\n", toterrs);

        }

    }

    MPI_Finalize();

    return 0;

}