I am a systems administrator for a cluster, and we use Torque and Moab as the resource manager and scheduler. I read that you can use drmaa to submit jobs as a different user other than the 'galaxy' user using the external scripts, but I haven't yet found a way to do it with torque. Is there a solution that you could suggest? I am guessing that the pbs runner process would have to be forked and use setuid to be able to run under the user. This would be great, because it would make it easier to keep track of user time utilization.