Hi folks, I'm looking for pointers on getting mrbayes to take advantage of MPICH-1.2.6 when doing Markov Chain Monte Carlo (MCMC) analysis. As far as I can tell the 'mb' binary that compiled cleanly against mpich-1.2.6 (ch_p4 transport device) using 'mpicc' behaves exactly the same as 'mb' compiled without MPI support :) The mrbayes manuals are not exactly helpful. The basic summary of the manual regarding parallel operation goes like this: "You can use Pooch to run MCMC analysis tasks on multiple Apple machines and it will compile for MPICH". That's about it. Launching the 'mb' binary with mpirun causes the app to seemingly only run on the the node where mpirun was invoked. There is no sign that the app is honoring the machines file or doing anything on a remote system. I'm missing something simple and obvious here. Any tips would be appreciated. Info I'd appreciate if anyone has it: 1. Makefile examples for MB using LAM-MPI or MPICH 2. Does MCMC output in any way let you know that it is running in parallel mode? Is there anything unique about the output that would tell me the MPI method is being used? What sorts of processes will be started on remote machines? 3. mpirun examples for mrbayes or any integration/usage scripts used to run the app in a parallel environment. 4. any other debugging, verbose logging or troubleshooting tips Regards, Chris -- Chris Dagdigian, <dag@sonsorol.org> BioTeam - Independent life science IT & informatics consulting Office: 617-665-6088, Mobile: 617-877-5498, Fax: 425-699-0193 PGP KeyID: 83D4310E iChat/AIM: bioteamdag Web: http://bioteam.net