>>>>> "JH" == John Hearns via Beowulf <beowulf@beowulf.org> writes:
JH> Roland, the OpenHPC integration IS interesting. I am on the JH> OpenHPC list and look forward to the announcement there. Yes, we'll post there when ready. JH> On 17 May 2018 at 15:00, "R" = Roland Fehrenbacher <r...@q-leap.de> JH> wrote: >>>>> "J" == Lux, Jim (337K) <james.p....@jpl.nasa.gov> writes: J> The reason I hadn't looked at "diskless boot from a J> server" is the size of the image - assume you don't have a high J> bandwidth or reliable link. R> This is not something to worry about with Qlustar. A (compressed) R> Qlustar 10.0 image containing e.g. the core OS + slurm + OFED + R> Lustre is just a mere 165MB to be transferred (eating 420MB of R> RAM when unpacked as the OS on the node) from the head to a R> node. Qlustar (and its non-public ancestors) were never using R> anything but RAMDisks (with real disks for scratch), the first R> cluster running this at the end of 2001 was on Athlons ... and R> eaten-up RAM in the range of 100MB still mattered a lot at that R> time :) R> So over the years, we perfected our image build mechanism to R> achieve a close to minimal (size-wise) OS, minimal in the sense R> of: Given required functionality (wanted kernel modules, R> services, binaries/scripts, libs), generate an image (module) of R> minimal size providing it. That is maximum light-weight by R> definition. R> Yes, I know, you'll probably say "well, but it's just Ubuntu R> ...". Not for much longer though: CentOS support (incl. OpenHPC R> integration) coming very soon ... And all Open-Source and free. R> Best, R> Roland R> ------- https://www.q-leap.com / https://qlustar.com R> --- HPC / Storage / Cloud Linux Cluster OS --- _______________________________________________ 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