What is the maximum allowed “wall clock time” I may specify?
The maximum allowed walltime is 30 days, or in hh:mm:ss = 720:00:00. Your job will not start if you have specified a walltime greater than this. You may reduce the walltime of an already submitted job using “mjobctl” (Moab job control). In addition we ask that, except for a small number of test jobs, jobs run at least 30 minutes and over an hour in length is preferable. Our job scheduler policies explains more on this subject. Also see How to Submit Basic Jobs for other PBS specifications and how to deal with very short jobs.
