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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> What does diagnose &#8211;p say about the priority of the jobs you expect to be preempted? Priority may take precedence over preemptability. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> mauiusers-bounces@supercluster.org [mailto:mauiusers-bounces@supercluster.org] <b>On Behalf Of </b>Joseph Farran<br><b>Sent:</b> Monday, February 13, 2012 3:19 PM<br><b>To:</b> mauiusers@supercluster.org<br><b>Subject:</b> [Mauiusers] Backfill Jobs prevent PREEMPTOR jobs from running?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p>&nbsp;</o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:13.5pt'>Hi All.<br><br>We have a test bed setup running Maui 3.3.1 running with Torque 2.5.9.<br><br>We are testing PREEMPTOR and PREEMTEE setup with Maui and all works well until Maui starts new backfill jobs.<br><br>The new backfill jobs started by Maui will then not let PREEMTOR jobs run.&nbsp;&nbsp;&nbsp; Is this a bug or are we missing a priority?<br><br>Our Torque nodes file have:<br><br>compute-1-1 np=64 chem free<br>compute-1-2 np=64 chem free<br>compute-1-3 np=64 chem free<br>compute-1-4 np=64 chem free<br>compute-1-5 np=64 chem free<br>compute-1-6 np=64 chem free<br>compute-1-7 np=64 tw free<br>compute-1-8 np=64 tw free<br>compute-1-9 np=64 tw free<br>compute-1-10 np=64 tw free<br><br>Torque &quot;default&quot; queue is &quot;free&quot;:<br>set server default_queue = free<br>set server resources_default.nodes = 1<br><br><br>We fill up the queue with 10 63-core jobs and 15 1-core jobs as &quot;PREEMPTEE&quot; jobs &quot;free&quot; queue.&nbsp;&nbsp; Maui starts 10 63-core jobs and 10 1-core jobs (leaving 5 1-core jobs in the queue).<br><br>As user &quot;tw&quot; I run:<br>&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; qsub -I&nbsp; -q tw&nbsp; -l nodes=4:ppn=64&nbsp;&nbsp;&nbsp;&nbsp; ( PREEMPTOR job )<br>it PREEMPTS correctly.&nbsp;&nbsp; Everything works as expected.<br><br>However, if I run:<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; qsub -I&nbsp; -q tw&nbsp; -l nodes=4:ppn=62&nbsp;&nbsp;&nbsp;&nbsp; ( PREEMPTOR job )<br><br>It PREEMPTS correctly and Maui then starts 4 new backfill 1-core jobs (since there are now 4 new 1-core CPU idle).<br><br>But here is the problem.&nbsp;&nbsp;&nbsp; If I then re-run the command:<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; qsub -I&nbsp;&nbsp; -q tw&nbsp; -l nodes=4:ppn=64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ( PREEMPTOR job)<br><br>The job will NOT run.&nbsp;&nbsp; The 4 new 1-core jobs Maui started are not SUSPENDED by Maui.<br><br>Is this a bug?<br><br><br>------------------- maui.cfg file ------------------------------------<br>NODEALLOCATIONPOLICY&nbsp; MINRESOURCE<br><br>PREEMPTPOLICY&nbsp; SUSPEND<br>ENABLEMULTIREQJOBS&nbsp; TRUE<br><br># QOS<br>QOSWEIGHT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10000<br><br>QOSCFG[high] PRIORITY=1000&nbsp; QFLAGS=PREEMPTOR QTWEIGHT=100<br>QOSCFG[low]&nbsp; PRIORITY=0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; QFLAGS=PREEMPTEE QTWEIGHT=0<br><br>#The default queue is called &quot;free&quot;<br>CLASSCFG[free] QDEF=low <br>CLASSCFG[free] DEFAULT.FEATURES=free<br><br># TW Queue <br>SRCFG[tw]&nbsp;&nbsp;&nbsp; PERIOD=INFINITY <br>CLASSCFG[tw] QDEF=high<br>CLASSCFG[tw] DEFAULT.FEATURES=tw<br><br><br><br><br></span><o:p></o:p></p></div></body></html>