/* -*- 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;

}