Hi,

We are trying to get to the bottom of some TRES limits we have in place, to
work out if it should be expected behaviour.

We have two QoS configured, 'low' and 'normal'.   Normal is the default QoS
and applys limits at the association level.   The low QoS has it's own TRES
limits applied to it, and is preemptable by 'normal'

eg:

account engineering has GrpTRES=node=20

QoS low has GrpTRES=node=50

A user from engineering has a 15 node job running, leaving 5 nodes
available in their association limit.  He then submits a 50 node job using
the low QoS, and the job also starts.  He then submits a 5 node job using
the normal QoS, however it is held for AssocGrpNodeLimit, despite there
being 5 nodes available for engineering/normal.

This is Slurm 15.08.8, and aside from this everything works as expected.

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