[Condor-users] Jobs Not Suspending

[Jim Summers <jsummers@xxxxxxxxxxxxxxxxx>]

Hello List,

I am doing some testing of condor on a small group of machines in one of our 
labs here.  They are Dell Optiplex 620's running Linux (kernel 2.6.xx).
They have usb only keyboards and mice.  Unfortunately condor can not detect 
activity from these devices and hence I can't get a job to suspend on this event.
So I thought I would test suspending based on CPU activity.  I thought by 
lowering the HighLoad value to something very low, like .1, then that may 
cause a condor job to suspend pretty easily, when a user logs onto the machine 
either at the console or remotely and needs to run a non-condor job.
But that is not working.  I have started a cpu intensive condor job and 
watched it go to 100% of cpu.  Then launch several other non-condor cpu 
intensive jobs.  The OS begins doing it's standard process management, but the 
condor job never actually suspends.  I have let the condor job run for 2-10 
minutes before launching the other processes.
Any ideas on what I am not configuring, or not understanding?  Is there a 
parameter or something to set that would tell condor that these machines are 
desktops/workstations and not dedicated condor machines?  I really need to 
have the condor jobs suspend and hand over the machine to the non-condor 
processes.
TIA
--
Jim Summers
School of Computer Science-University of Oklahoma
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