[torqueusers] Stacking jobs using Maui/Torque

Matthew Morabito matt.morabito at gmail.com
Wed Oct 19 15:23:37 MDT 2011


Crossposting this to torqueusers, I originally sent to mauiusers:

I'm using maui v. 3.3.1 with pbs/torque v.2.4.11 and it seems
maui/torque are refusing
to share different jobs on the same nodes (from maui.log):

10/12 12:13:59 INFO:     located resources for 64 tasks (76) in best
partition DEFAULT for job 1519 at time 00:00:00
10/12 12:13:59 ERROR:    invalid nodelist for job 1519:0 (inadequate
nodecount, 29 < 32)
10/12 12:13:59 WARNING:  cannot allocate tasks for job 1519 at 00:00:00

There are clearly enough processors (76) free for the job (which needs 64,
at 32 nodes/2 processors per node) and then maui decides that it can't start
despite having enough processors to do so. Where is the configuration for
allowing the stacking of jobs in maui, and is there something I can change
in the torque nodefile that can increase the max jobs for each node?

My maui.cfg has:

BACKFILLPOLICY        FIRSTFIT
RESERVATIONPOLICY    CURRENTHIGHEST
RESERVATIONDEPTH = 20
NODEAVAILABILITYPOLICY UTILIZED
NODEACCESSPOLICY        SHARED

NODEALLOCATIONPOLICY  CPULOAD

#also has a line for each node:

NODECFG[node01] MAXJOB=2
...
etc

My /var/lib/torque/server_priv/nodes file looks like (I have nodes with 2
and 4 processors):

node01 np=2
node02 np=2
....
node30 np=4
node31 np=4

Any help would be greatly appreciated.

Thanks,
Matthew
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