#include <stdio.h>
#include <mpi.h>

int main(int argc, char ** argv) {

	int size,rank;

	MPI_Init(&argc, &argv);
	// note that argc and argv are passed by address

	MPI_Comm_rank(MPI_COMM_WORLD,&rank);
	MPI_Comm_size(MPI_COMM_WORLD,&size);

	printf("Hello MPI! Process %d of %d\n", rank,size);

	MPI_Finalize(); 
}