#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.