Hi Jeff, Yes I did verified that multiple jobs are running on same logical cpu. Thanks, Abhi.
Jeff Anderson-Lee wrote: > On 12/2/2010 9:07 AM, Abhishek Gupta wrote: >> Our job scheduler is acting little weird. The jobs submitted are going >> on only a few nodes and each node is running more jobs than the total >> number of CPUs on that node. We have not changed anything recently. >> Can anyone suggest what is the best node allocation policy that make >> sure we do not run more jobs than number of cores available on a node >> and jobs are evenly distributed on all the nodes and not on the few >> nodes? >> Thanks, >> Abhi. > > We find that many users understate the number of cores/procs needed in > their requests. They ask for a single cpu, then spawn multiple tasks, > or run Java in a way that runs two or more active threads instead of > one. Maui does not seem to set any cpu affinity to prevent > interference nor enforce the requested number of cores as far as I know. > > Do you know for certain that you are getting multiple jobs allocated > to the same logical cpu and not just user task forks? > > If you use Torque as your underlying scheduler, the following should > help you to find true duplicate assignments: > > qstat -f | grep exec | sort | uniq -c | sort -n > > Jeff Anderson-Lee _______________________________________________ mauiusers mailing list [email protected] http://www.supercluster.org/mailman/listinfo/mauiusers
