[ET Trac] [Einstein Toolkit] #1850: Severe performance problem on Stampede

Einstein Toolkit trac-noreply at einsteintoolkit.org
Mon Mar 21 13:46:39 CDT 2016

#1850: Severe performance problem on Stampede
  Reporter:  hinder      |       Owner:                     
      Type:  defect      |      Status:  review             
  Priority:  major       |   Milestone:                     
 Component:  SimFactory  |     Version:  development version
Resolution:              |    Keywords:                     

Comment (by knarf):

 Replying to [comment:29 hinder]:
 > I think the question of whether SystemTopology should be activated
 automatically is distracting from the important aspect of this ticket.  I
 have proposed removing the KMP_AFFINITY line from the simfactory run
 script, which would directly solve the problem here.  That line is also
 wrong, and useless for achieving what needs to be done.  Can I suggest
 that the question of activating SystemTopology automatically be moved to
 another ticket?

 You are right. Unless someone else speaks against removing KMP_AFFINITY
 within a few days, please go ahead and do so. The only reported case of
 bad performance when leaving it out and using hwloc/SystemTopologu
 couldn't be reproduced.

Ticket URL: <https://trac.einsteintoolkit.org/ticket/1850#comment:31>
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