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#include <stdio.h>

#include <math.h>

#include <mpi.h>

// mpicxx mpiHello.c -o mpiHello

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

int myrank, nprocs, namelen;

char processor_name[MPI_MAX_PROCESSOR_NAME];

MPI_Init(&argc, &argv);

MPI_Comm_size(MPI_COMM_WORLD, &nprocs);

MPI_Comm_rank(MPI_COMM_WORLD, &myrank);

MPI_Get_processor_name(processor_name, &namelen);

printf("Hello from processor %d of %d on %s\n", myrank, nprocs, processor_name);

MPI_Finalize();

return 0;

}