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

/*

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include <stdio.h>

#include "mpi.h"

#include "mpitest.h"

#define BUFSIZE 2000

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

{

    MPI_Status status;

    MPI_Request request;

    int a[10], b[10];

    int buf[BUFSIZE], *bptr, bl, i, j, rank, size;

    int errs = 0;

    MTest_Init(0, 0);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    MPI_Comm_size(MPI_COMM_WORLD, &size);

    MPI_Buffer_attach(buf, BUFSIZE);

    for (j = 0; j < 10; j++) {

        MPI_Bsend_init(a, 10, MPI_INT, 0, 27 + j, MPI_COMM_WORLD, &request);

        for (i = 0; i < 10; i++) {

            a[i] = (rank + 10 * j) * size + i;

        }

        MPI_Start(&request);

        MPI_Wait(&request, &status);

        MPI_Request_free(&request);

    }

    if (rank == 0) {

        for (i = 0; i < size; i++) {

            for (j = 0; j < 10; j++) {

                int k;

                status.MPI_TAG = -10;

                status.MPI_SOURCE = -20;

                MPI_Recv(b, 10, MPI_INT, i, 27 + j, MPI_COMM_WORLD, &status);

                if (status.MPI_TAG != 27 + j) {

                    errs++;

                    printf("Wrong tag = %d\n", status.MPI_TAG);

                }

                if (status.MPI_SOURCE != i) {

                    errs++;

                    printf("Wrong source = %d\n", status.MPI_SOURCE);

                }

                for (k = 0; k < 10; k++) {

                    if (b[k] != (i + 10 * j) * size + k) {

                        errs++;

                        printf("received b[%d] = %d from %d tag %d\n", k, b[k], i, 27 + j);

                    }

                }

            }

        }

    }

    MPI_Buffer_detach(&bptr, &bl);

    MTest_Finalize(errs);

    MPI_Finalize();

    return 0;

}