[Beowulf] disabling swap on cluster nodes?

Novosielski, Ryan novosirj at ca.rutgers.edu
Fri Feb 6 14:38:05 PST 2015

It does seem like a good idea on the face of it. I would have to check if we do that, but I know that the jobs we tend to run don't happen to come close to using all of the physical memory on the machines anyway, so there ought not really be an impact, I'd think.

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On Feb 6, 2015, at 17:34, Prentice Bisbal <prentice.bisbal at rutgers.edu<mailto:prentice.bisbal at rutgers.edu>> wrote:

Do any of you disable swap on your compute nodes?

I brought this up in a presentation I gave last night on HPC system
administration, but realized I never actually did this, or know of
anyone who has. I would tweak the vm.overcommit_memory setting, but
that's not the same as disabling swap altogether. I'd like to try doing
this in the future, but I prefer to learn from someone else's mistakes

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