MPI Basics

#include <mpi.h>

main(int argc, char *argv[])

{

int iproc, nproc;

MPI_Init(&argc, &argv);

MPI_Comm_size(MPI_COMM_WORLD, &nproc);

MPI_Comm_rank(MPI_COMM_WORLD, &iproc);

printf("I am processor %d of %d\n", iproc, nproc);

MPI_Finalize();

}