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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
* (C) 2001 by Argonne National Laboratory.
* See COPYRIGHT in top-level directory.
*/
/*
* A simple code that can be used to test the basic message passing or
* debug parts of the code. This is less a test than a way to exercise
* the primary code path for short message send-receives
*/
#include <stdio.h>
#include "mpi.h"
int main( int argc, char *argv[] )
{
int myrank, size, src=0, dest=1, msgsize=1;
int buf[20];
MPI_Init( &argc, &argv );
MPI_Comm_size( MPI_COMM_WORLD, &size );
MPI_Comm_rank( MPI_COMM_WORLD, &myrank );
if (myrank == src) {
buf[0] = 0xabcd0123;
MPI_Send( buf, msgsize, MPI_INT, dest, 0, MPI_COMM_WORLD );
}
else if (myrank == dest) {
buf[0] = 0xffffffff;
MPI_Recv( buf, msgsize, MPI_INT, src, 0, MPI_COMM_WORLD,
MPI_STATUS_IGNORE );
if (buf[0] != 0xabcd0123) {
printf( "Expected %x but got %x\n", 0xabcd0123, buf[0] );
fflush(stdout);
}
}
MPI_Finalize();
return 0;
}
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