http://wiki.define-technology.com/mediawiki-1.35.0/index.php?action=history&feed=atom&title=Absolute_Priority_SchedulingAbsolute Priority Scheduling - Revision history2026-05-04T18:46:07ZRevision history for this page on the wikiMediaWiki 1.35.0http://wiki.define-technology.com/mediawiki-1.35.0/index.php?title=Absolute_Priority_Scheduling&diff=2303&oldid=prevMichael: Created page with "This allows us to configure jobs that increase in priority over time and set certain queues to remain at a static priority, allowing for very low priority jobs only to be run ..."2013-05-01T09:28:05Z<p>Created page with "This allows us to configure jobs that increase in priority over time and set certain queues to remain at a static priority, allowing for very low priority jobs only to be run ..."</p>
<p><b>New page</b></p><div>This allows us to configure jobs that increase in priority over time and set certain queues to remain at a static priority, allowing for very low priority jobs only to be run when the cluster is quite.<br />
<br />
===== Set JOB_PRIORITY_OVER_TIME =====<br />
* In lsb.params<br />
<syntaxhighlight><br />
MAX_USER_PRIORITY = 100<br />
JOB_PRIORITY_OVER_TIME=5/1 # 5 increment every 1 minutes<br />
</syntaxhighlight><br />
<br />
===== Set up the Queues =====<br />
<syntaxhighlight><br />
Begin Queue<br />
QUEUE_NAME = normal<br />
PRIORITY = 30<br />
NICE = 20<br />
INTERACTIVE = NO<br />
HOSTS = all<br />
DESCRIPTION = Queue for default batch jobs<br />
APS_PRIORITY = WEIGHT [[JPRIORITY, 1] [QPRIORITY, 10]]<br />
End Queue<br />
<br />
Begin Queue<br />
QUEUE_NAME = low<br />
PRIORITY = 1<br />
NICE = 20<br />
INTERACTIVE = NO<br />
HOSTS = all<br />
USERS = all<br />
DESCRIPTION = Low Priority Queue for batch jobs<br />
APS_PRIORITY = WEIGHT [[QPRIORITY, 1]]<br />
End Queue<br />
<br />
# Note: master slave setup also possible: check jobpriorities.html<br />
# add: QUEUE_GROUP = low, in the normal queue definition<br />
</syntaxhighlight><br />
<br />
===== Check APS with bjobs =====<br />
With this in place I started submitted jobs as user david, 7 to the normal queue, then 6 to the low queue (with a job limit of 5)<br />
<syntaxhighlight><br />
[david@vhpchead ~]$ bjobs -aps<br />
JOBID USER STAT QUEUE FROM_HOST EXEC_HOST JOB_NAME SUBMIT_TIME APS<br />
61581 david RUN normal vhpchead gpu-01-00 sleep 600 Jun 2 14:55 -<br />
61582 david RUN normal vhpchead gpu-01-00 sleep 600 Jun 2 14:55 -<br />
61583 david RUN normal vhpchead gpu-01-00 sleep 600 Jun 2 14:55 -<br />
61584 david RUN normal vhpchead gpu-01-00 sleep 600 Jun 2 14:55 -<br />
61585 david RUN normal vhpchead gpu-01-00 sleep 600 Jun 2 14:55 -<br />
61586 david PEND normal vhpchead sleep 600 Jun 2 14:55 345.00<br />
61587 david PEND normal vhpchead sleep 600 Jun 2 14:55 345.00<br />
61588 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
61589 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
61590 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
61591 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
61592 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
61593 david PEND low vhpchead sleep 600 Jun 2 14:55 1.00<br />
</syntaxhighlight></div>Michael