I am doing some testing on a variety of 8-core nodes in which I just want to execute a couple of executables and have them distributed to the available cores without overlapping. Typically, this would be done with a parameter like -machinefile machines, but I have no idea what names to put into the machines file as this is a single node with two quad core cpu's. As I am launching the jobs sans scheduler, I need to specify what cores to run on I would think to keep from overscheduling some cores while others receive nothing to do at all.

Simple suggestions? Maybe Open MPI takes care of this detail for me?

Thanks!

Jeff Pummill