[Mauiusers] preemptor job holds up the rest of the system
bill at Princeton.EDU
Tue Jan 12 12:46:36 MST 2010
We've been running Maui/Torque for quite a few years here. On our
latest cluster there has been a need to start using preemptive queues
(classes). This has done fine except for a problem we had when setting
a system reservation.
So a system reservation was set across the entire cluster. Normally, on
clusters without preemptive scheduling, jobs exceeding the wallclock
time will block, allowing other shorter jobs to backfill in.
When using a preemptive class, when a job exceeeds available wallclock
time, it remains in the IDLE state preventing other backfill jobs from
running. Yes, these other jobs are preemptee class.
Manually placing the overruns on hold allows these other jobs to get
Am I simply missing something in the configuration? Or is this the
expected behavior when using preemptor/preemptee classes/QOS?
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