Does anyone on this listserv have any experience integrating SGE and MPI within an OS X cluster? Specifically we have user who wants to run the mpi parallelized version of tree-puzzle on our OS X cluster that is currently managed using SGE. While I have seen a preliminary integration of LAM-MPI and SGE on http://gridengine.sunsource.net/project/gridengine/howto/lam/ SGE_LAM_Integration.html it is not clear how straightforward this might be in the real world. Any firsthand info and experience you want to share would be welcome. Cheers, Dave Adelson Texas A&M University