| #include "mpi.h" | |
| #include "unistd.h" | |
| #include "stdio.h" | |
| int main(int argc, char **argv) { | |
| size_t len=256; | |
| char *hostname = new char[len]; | |
| int size,rank; | |
| MPI_Init(&argc, &argv); | |
| MPI_Comm_size(MPI_COMM_WORLD, &size); | |
| MPI_Comm_rank(MPI_COMM_WORLD, &rank); | |
| gethostname(hostname, len); | |
| printf("Hi, I am %d of %d and my hostname is %s\n", rank, size, hostname); | |
| MPI_Finalize(); | |
| } |