hello.c
8449e591e260master

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

			int main(int argc, char *argv[]){
			int size, rank;
			MPI_Init(&argc, &argv);
			MPI_Comm_size(MPI_COMM_WORLD, &size);
			MPI_Comm_rank(MPI_COMM_WORLD, &rank);

			printf("I’m process %d out of %d\n", rank, size);
			MPI_Finalize();
			}