As we are discussing storage performance, may I slightly blow the trumpet for someone else https://www.ellexus.com/ellexus-contributes-to-global-paper-on-how-to-analyse-i-o/ https://arxiv.org/abs/1807.04985
On Thu, 26 Jul 2018 at 15:45, Michael Di Domenico <mdidomeni...@gmail.com> wrote: > On Thu, Jul 26, 2018 at 9:30 AM, John Hearns via Beowulf > <beowulf@beowulf.org> wrote: > >>in theory you could cap the performance interference using VM's and > >>cgroup controls, but i'm not sure how effective that actually is (no > >>data) in HPC. > > > > I looked quite heavily at performance capping for RDMA applications in > > cgroups about a year ago. > > It is very doable, however you need a recent 4-series kernel. Sadly we > were > > using 3-series kernels on RHEL > > interesting, though i'm not sure i'd dive that deep. for one i'm > generally restricted to rhel, so that means a 3.x kernel right now. > > but also i feel like this might be an area where VM's might provide a > layer of management that containers don't. i could conceive that the > storage and compute VM's might not necessarily run the same kernel > version and/or O/S > > i'd also be more amenable to having two high speed nic's both IB or > one IB one 40GigE, one each for the VM's, rather then fair-sharing the > work queues of one IB card > > dunno, just spit balling here. maybe something sticks enough for me > to standup something with my older cast off hardware > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf >
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