/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
 *  (C) 2008 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include "mpitest.h"

int main(int argc, char *argv[])
{
    int errs = 0;
    MPI_Comm comm;
    int minsize = 2, csize, count;

    MTest_Init(&argc, &argv);

    while (MTestGetIntracommGeneral(&comm, minsize, 1)) {
        if (comm == MPI_COMM_NULL)
            continue;

        MPI_Comm_size(comm, &csize);
        count = 128000;
        {
            int *ap, *bp;
            int root;
            ap = (int *) malloc(count * sizeof(int));
            bp = (int *) malloc(count * sizeof(int));
            root = 0;
            MPI_Reduce(ap, bp, count, MPI_INT, MPI_SUM, root, comm);
            free(ap);
            free(bp);
        }
        MTestFreeComm(&comm);
    }

    MTest_Finalize(errs);

    MPI_Finalize();

    return 0;
}