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/* -*- C -*-
*
* $HEADER$
*
* The most basic of MPI applications
*/
#include <stdio.h>
#include <stdlib.h>
#include "mpi.h"
int main(int argc, char* argv[])
{
int rank, size;
int errcode;
if (1 < argc) {
errcode = strtol(argv[1], NULL, 10);
} else {
errcode = 2;
}
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
printf("Hello, World, I am %d of %d\n", rank, size);
if (1 == size) {
MPI_Abort(MPI_COMM_WORLD, errcode);
} else {
if (1 == rank) {
MPI_Abort(MPI_COMM_WORLD, errcode);
} else {
errcode = 0;
}
}
MPI_Finalize();
return errcode;
}
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