#include <stdio.h> 
#include <mpi.h> 
main(argc, argv) 
int argc; 
char *argv[]; 
{ 
char name[BUFSIZ]; 
int length; 
MPI_Init(&argc, &argv); 
MPI_Get_processor_name(name, &length); 
printf("%s: hello world\n", name); 
MPI_Finalize(); 
}