#include <mpi.h>
#include <stdio.h>
 
int main(int argc, char **argv) {
    int rank;
 
    // Initialize MPI
    MPI_Init(&argc, &argv);
 
    // Get my rank
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 
    // Print the message only once (only process 0 does this)
    if (rank == 0) {
        printf("Hello from process %d of %d\n", rank, MPI_Comm_size(MPI_COMM_WORLD, &rank));
    }
 
    // Rest of your MPI code here...
 
    // Finalize MPI
    MPI_Finalize();
    return 0;
}
 

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