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
