[Mauiusers] MOAB standing reservations broken ?

Chris Samuel csamuel at vpac.org
Mon Jan 3 22:32:54 MST 2005

Can we have a Bugzilla option for Moab please ? :-)

Before Newtonmas/Xmas I noticed that our standing reservation of two nodes 
that had used to work well for jobs less than 15 minutes walltime and 4 cpus 
or less was no longer being used.

Config follows:

SRCFG[sque] STARTTIME=08:00:00 ENDTIME=20:00:00
SRCFG[sque] MAXTIME=00:15:00+*

For some reason although eligible jobs were being granted access (as confirmed 
with checkjob -r) they would not run on those nodes unless forced to start 
with runjob.  These jobs would run on other nodes if they were spare, or on 
those in the reservation once it expired at 8pm!

If I specifically asked for that reservation by doing:

 qsub -q sque -W x=FLAGS:ADVRES:sque.0.98 -I

(the sque gives a default walltime of 10 minutes) then the jobs would never 
start unless I did a runjob on them.

Because this effectively meant that two nodes were doing zip whilst the 
reservation was in force I removed it for the holidays as we had (and still 
have) a big queue of jobs waiting to go, so there's not going to be any nodes 
free for this to come back into play for a couple of days (unless we get 
lucky and a job finishes early tonight).  Then I may be able to increase the 
logging and see if there's anything there that shows any problems.

This happens with: moab-4.2.0p3-snap.1103305235

It also happened with earlier ones..

 Christopher Samuel - (03)9925 4751 - VPAC Systems & Network Admin
 Victorian Partnership for Advanced Computing http://www.vpac.org/
 Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia

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