(typing mpi.queue on the command line will give you the self explanatory menu).
As a last resort you may look the Answer files.
1. Copy few of the following codes to your work directory and compile/run them on 2, 4 processors using mpirun as well as mpi.queue command.
3. Take the following serial algorithm and implement it in parallel.
Convert the non blocking send/recv calls in poisson: Fortran C to blocking send recv calls, and write down your experience.