Prentice, We regularly configure our compute nodes without any swap partition. There have been no adverse effects on the systems' performance under load. We're running clusters with everything from RHEL5/RHEL6 and the FOS variants thereof to several LTS versions of Ubuntu. RAM per node ranges from 32GB to 1TB. Jobs have run for several weeks without issue.
~~~~~~~~~~~~~~~~~~~~~~~ Mahmood A. Sayed Sr Systems Programmer Research Support Pratt School of Engineering Duke University ~~~~~~~~~~~~~~~~~~~~~~~ > On Feb 6, 2015, at 5:35 PM, Prentice Bisbal <[email protected]> > 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 first. > > > -- > Prentice > _______________________________________________ > Beowulf mailing list, [email protected] sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
