[GE users] job scheduling on different queues

tgebert tgebert at transtec.de
Thu Jul 30 16:20:34 BST 2009

Hello list,

I have node1 - node4 (four CPUs on each node) on my cluster and configured two queues for parallel jobs and one queue for serial jobs (q_par and q_ser).
Both queues can access all cores on all nodes so every queue has 16 slots. The queues are configured to suspend the other queue through the Subordinate feature.
The probelm I am facing is that if there are e.g 3 jobs running in the q_ser and there is a parallel job waiting in the queue q_par, later submitted serial jobs to q_ser are started immediately even if the parallel job has a higher priority. This would lead to that the parallel job is never started in the worst case.
Does anyone know if it's possible to configure the scheduling in a way, that  the newly submitted serial jobs are not started immediately and wait until the resources for the parallel job are freed, so the parallel job can start?

All the Best


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