linux cluster with pvm, mpi, matlab-mpi.

Just wondering if anyone has attempted this before. I have only pvm 
installed on a controller with 4 nodes as of right now, starting to play 
with it before it goes into use. As well, I'm going to install mpi with 
an apparently available matlab-mpi module as well. I haven't looked up 
the matlab-mpi module yet but apparently it exists and is free. Just 
wondering if anyone on the list has installed this module and have 
clients using it for matlab programs, etc. I haven't installed MPI yet 
but will before the matlab-mpi modules obviously.

thanks,

Craig.