/* -*- C -*- * * $HEADER$ * * The most basic of MPI applications */ #include #include "mpi.h" int main(int argc, char* argv[]) { int rank, size; char hostname[512]; MPI_Init(&argc, &argv); MPI_Comm_rank(MPI_COMM_WORLD, &rank); MPI_Comm_size(MPI_COMM_WORLD, &size); gethostname(hostname, 512); printf("Hello, World, I am %d of %d on host %s\n", rank, size, hostname); MPI_Finalize(); return 0; }