text: /* -*- Mode: C; c-basic-offset:4 ; -*- */
  /*
   *  (C) 2001 by Argonne National Laboratory.
   *      See COPYRIGHT in top-level directory.
   */
  #include <stdio.h>
  #include "mpi.h"
  
  /*
   * This example should be run with 2 processes and tests the ability of the
   * implementation to handle a flood of one-way messages.
   */
  
  int main( int argc, char **argv )
  {
    double wscale = 10.0, scale;
    int numprocs, myid,i;
  
    MPI_Init(&argc,&argv);
    MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
    MPI_Comm_rank(MPI_COMM_WORLD,&myid);
  
    for ( i=0; i<10000; i++) {
      MPI_Allreduce(&wscale,&scale,1,MPI_DOUBLE,MPI_SUM,MPI_COMM_WORLD);
    }
  
    if (myid == 0) {
        /* If we get here at all, we're ok */
        printf( " No Errors\n" );
    }
    MPI_Finalize();
    
    return 0;
  }
  