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

/* vim: set ft=c.mpich : */

/*

 *  (C) 2018 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include <stdio.h>

#include <assert.h>

#include "mpi.h"

int main(int argc, char *argv[])

{

    int size, rank;

    int local_rank, local_size;

    MPI_Comm split_comm;

    int buffer = 0;

    MPI_Init(&argc, &argv);

    MPI_Comm_size(MPI_COMM_WORLD, &size);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    MPI_Comm_split(MPI_COMM_WORLD, rank % 2, rank, &split_comm);

    MPI_Barrier(split_comm);

    MPI_Comm_size(split_comm, &local_size);

    MPI_Comm_rank(split_comm, &local_rank);

    if (rank == 1) {

        MPI_Abort(split_comm, 8);

    }

    if (rank == 0) {

        buffer = 4;

        MPI_Send(&buffer, 1, MPI_INT, 1, 0, split_comm);

    }

    if (rank == 2) {

        MPI_Recv(&buffer, 1, MPI_INT, 0, 0, split_comm, MPI_STATUS_IGNORE);

        assert(buffer == 4);

        printf("No Errors\n");

        fflush(stdout);

    }

    MPI_Comm_free(&split_comm);

    MPI_Finalize();

    return 0;

}