#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); }