Hello,
We (fairly) recently upgraded our cluster to Rocks 6.1.1
and we now seem to be having problems with RQS. On our old
cluster, we had an RQS quota set as follows:
{
name host-slots
description restrict slots to core count
enabled TRUE
limit hosts {*} to slots=$num_proc
}
The reason for this was to try to prevent oversubscription
of the processors on the clients. Now, if I have this quota
enabled, jobs that are submitted don't start and if I do a
'qstat -j job-number' under "scheduling info" I see things like
cannot run because it exceeds limit "////compute-0-7/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-7/" in rule "host-slots/1"
(-l slots=1) cannot run in queue "compute-0-39.local" because it offers only
hc:slots=0.000000
cannot run because it exceeds limit "////compute-0-78/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-78/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-55/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-55/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-74/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-74/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-2-7/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-2-1/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-2-2/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-22/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-0-22/" in rule "host-slots/1"
cannot run because it exceeds limit "////compute-1-2/" in rule "host-slots/1"
cannot run in PE "mpich" because it only offers 0 slots
But as soon as I run 'qconf -mrqs' and change TRUE to FALSE, the job runs.
Has the process for preventing oversubscription changed? Any ideas?
JY
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