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


int main(int argc, char *argv[]){
int rank, size, len;
 char name[MPI_MAX_PROCESSOR_NAME];

 MPI_Init(&argc, &argv);

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

 MPI_Get_processor_name(name, &len);
 printf ("Hello world! I'm %d of %d on %s\n", rank, size, name);

 MPI_Finalize();

 return(0);

}