[Mauiusers] node allocation problem with NODEALLOCATIONPOLICY MINRESOURCE

Lech Nieroda lnieroda at gmail.com
Thu Jan 22 03:09:19 MST 2009


Dear list,

our cluster has 16 nodes with 32G RAM and 8 CPUS each; we receive jobs
with varying processor-per-node requirements, e.g. 2,6,8.
The goal is to assign a job to a node with minimal remaining yet still
sufficient resources to fulfill the job's requirements, e.g. 2 ppn and
6 ppn jobs should be allocated to a single node in order to keep other
nodes available for potential 8 ppn jobs. The chosen configuration
paramater "NODEALLOCATIONPOLICY MINRESOURCE" does not seem to be
working - all nodes have been occupied with small ppn-requirement jobs
thus leaving us with many idling processors but no free node for a 8
ppn job.
Any ideas?

Regards,
Lech Nieroda


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