(for Myrinet)                                            ' the fast interconnect

mpicc -v yourprog.c -o yourprog.out     ' compile your program using mpicc, the default when
                                                                  log in points to the myrinet gm drivers

qsub yourprog_myr.pbs                          ' submit the pbs file! It's off!
 
 

(for Ethernet)                                          ' slower, but good to fall back on and great for testing.

module unload mpi                                 ' must unload the myrinet drivers -and-

module load mpich-p4                            ' load the ethernet modules; including the path redefn. for mpicc

mpicc -v yourprog.c -o yourprog.out     ' compile your program using mpicc, now with the  ethernet libraries

qsub yourprog_eth.pbs                            ' submit the PBS file! It's off and running!
 

(other useful administrative commands)

pbsnodes -a                                             ' tells you all about the status of the individual nodes

pbsnodes -l                                              ' lets you know what nodes are down

which mpicc
which mpif77                                            ' resource locating command; you can see which
                                                                     interface (myrinet or ethernet) the compiler is pointing to