[Moabusers] Job reservations changing when Moab restarted ?

[Gareth.Williams at csiro.au]

Hi Chris,

I have a related observation/problem. We have RESERVATIONPOLICY CURRENTHIGHEST so don't have your specific issue, but we do have a USRCFG MAXIJOB limit to prevent/limit large numbers of jobs from increasing in priority due to queue time or expansion factor.  When moab is restarted, it seems to lose information about jobs having been ineligible to run and so can raise the priority of a number of jobs in an undesirable manner.

Both issues are a pain because otherwise restarting moab has minimal impact and is all but required for significant config changes and obviously for updates.

-- Gareth

-----Original Message-----
From:	Chris Samuel [mailto:csamuel at vpac.org]
Sent:	Fri 25/01/2008 9:33 AM
To:	Moab Users
Cc:	
Subject:	Re: [Moabusers] Job reservations changing when Moab restarted ?


----- "Chris Samuel" <csamuel at vpac.org> wrote:

> We've had some complaints about jobs start times
> getting pushed back (according to showstart) even
> though we have RESERVATIONPOLICY HIGHEST which should
> (if my reading of the manual is correct) mean once
> they've got a reservation then that's it, it shouldn't
> change..

Case in point - a 128 CPU job (submitted on 17th) said on the 18th it would start in 2 days but a week later it is still Idle and now says it won't start for almost 6 days. :-(

[root at tango-m jobs]# showstart -e all 78607
job 78607 requires 128 procs for 20:00:00

Estimated Rsv based start in              5:19:28:11 on Thu Jan 31 04:58:52
Estimated Rsv based completion in         6:15:28:11 on Fri Feb  1 00:58:52

Estimated Priority based start in         5:19:28:11 on Thu Jan 31 04:58:52
Estimated Priority based completion in    6:15:28:11 on Fri Feb  1 00:58:52

Estimated Historical based start in       5:19:28:11 on Thu Jan 31 04:58:52
Estimated Historical based completion in  6:15:28:11 on Fri Feb  1 00:58:52

Best Partition: testing

This is *not* good..  any clues please ?

-- 
Christopher Samuel - (03) 9925 4751 - Systems Manager
 The Victorian Partnership for Advanced Computing
 P.O. Box 201, Carlton South, VIC 3053, Australia
VPAC is a not-for-profit Registered Research Agency