We bought KNC a long time ago and keep meaning to get them to a place where they can be used and just haven’t. Do you mount filesystems from them? We have GPFS storage, primarily, and would have to re-export it via NFS I suppose if we want the cards to use that storage. I’ve seen complaints about the stability of that setup. I didn’t try to build the GPFS portability layer for Phi — not sure whether to think it would or wouldn’t work (I guess I’d be inclined to doubt it).
> On Jun 14, 2018, at 12:02 AM, Stu Midgley <sdm...@gmail.com> wrote: > > Phi is dead... Long live phi... > > By which I mean, while the Phi as a chip is going away, its concepts live on. > Massive number of cores, large vectorisation and high speed memory (and > fucking high heat load - we do ~350W/socket). So, while the product code > will disappear, phi lives on. > > For KNC I did a lot of customisation to MPSS to get it to work... and we > haven't been able to shift from one of the very early version. We love the > KNC... we get 8 in 2RU which is awesome density (1.1kW/RU) > > For KNL its just x86 with a big vectorisation unit (700W/RU). > > In both cases you have to be very very careful how you manage memory. > > > > On Thu, Jun 14, 2018 at 10:33 AM Joe Landman <joe.land...@gmail.com> wrote: > I'm curious about your next gen plans, given Phi's roadmap. > > On 6/13/18 9:17 PM, Stu Midgley wrote: >> low level HPC means... lots of things. BUT we are a huge Xeon Phi shop and >> need low-level programmers ie. avx512, careful cache/memory management (NOT >> openmp/compiler vectorisation etc). > > I played around with avx512 in my rzf code. > https://github.com/joelandman/rzf/blob/master/avx2/rzf_avx512.c . Never > really spent a great deal of time on it, other than noting that using avx512 > seemed to downclock the core a bit on Skylake. > > Which dev/toolchain are you using for Phi? I set up the MPSS bit for a > customer, and it was pretty bad (2.6.32 kernel, etc.). Flaky control plane, > and a painful host->coprocessor interface. Did you develop your own? > Definitely curious. > > >> >> >> >> On Thu, Jun 14, 2018 at 1:08 AM Jonathan Engwall >> <engwalljonathanther...@gmail.com> wrote: >> John Hearne wrote: >> > Stuart Midgley works for DUG? They are currently >> > recruiting for an HPC manager in London... Interesting... >> >> Recruitment at DUG wants to call me about Low Level HPC. I have at least >> until 6pm. >> I am excited but also terrified. My background is C and now JavaScript, >> mostly online course work and telnet MUDs. >> Any suggestions are very much needed. >> What must a "low level HPC" know on day 1??? >> Jonathan Engwall >> engwalljonathanther...@gmail.com >> >> _______________________________________________ >> 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 >> >> >> -- >> Dr Stuart Midgley >> sdm...@gmail.com >> >> >> _______________________________________________ >> 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 > > -- > Joe Landman > e: > joe.land...@gmail.com > > t: @hpcjoe > c: +1 734 612 4615 > w: > https://scalability.org > > g: > https://github.com/joelandman > > l: > https://www.linkedin.com/in/joelandman > _______________________________________________ > 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 > > > -- > Dr Stuart Midgley > sdm...@gmail.com > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.beowulf.org%2Fmailman%2Flistinfo%2Fbeowulf&data=02%7C01%7Cnovosirj%40rutgers.edu%7C89d9a1fe40cd40448a5708d5d1abc4d9%7Cb92d2b234d35447093ff69aca6632ffe%7C1%7C0%7C636645458049748846&sdata=dEUacidlV69%2FM8NEdObFNmSOsOObZpPAF4NlfI7joTw%3D&reserved=0 -- ____ || \\UTGERS, |---------------------------*O*--------------------------- ||_// the State | Ryan Novosielski - novos...@rutgers.edu || \\ University | Sr. Technologist - 973/972.0922 (2x0922) ~*~ RBHS Campus || \\ of NJ | Office of Advanced Research Computing - MSB C630, Newark `'
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