Threadripper 32 core review

By: pgerassi (pgerassi2012.delete@this.wi.rr.com), August 13, 2018 2:16 pm
Room: Moderated Discussions
> Linus Torvalds (torvalds.delete@this.linux-foundation.org) on August 13, 2018 2:12 pm wrote:
> wumpus (lost.delete@this.in.a.cave) on August 13, 2018 9:32 am wrote:
> > Per Hesselgren (perhesselgren.delete@this.yahoo.se) on August 13, 2018 8:50 am wrote:
> > > Threadripper on Anandtech
> >
> > Looks like coherency isn't an issue for 32 cores, but obviously not everything scales perfectly.
>
> Even loads that should scale really well (like the chromium build) seem to have hit the
> point of negative scaling here, with a 32c/64t 2990WX doing worse than a 16c/32t 2950X.
>
> I do suspect it's mostly the load that doesn't scale any more at that point, with the negative scaling coming
> from more memory contention and perhaps half of the cores being further away from the memory controller.
>
> Somebody who knows the Chromium build better might be able to tell how far they'd expect
> the build to scale, but even for simple things like a parallel build, you often hit
> serialization points (eg linking phases after you've built all your library files).
> And writing Makefiles that expose all the parallelism isn't trivial either.
>
> But some of that may be "nobody spent any effort to scale past X cores because they are so
> rare, and build farms have their own scaling issues where IO may be the bottleneck".
>
> So some of the scalability issues may just be "people haven't even
> tried to get that much parallelism". Others may be more fundamental.
>
> Linus

Here are some reviews from Phoronix:

<a href="http://">2990WX on Linux

<a href="http://">2990WX on Windows 10 Pro vs 4 Linux distros stock

Essentially it seems that Linux distros don't have a scaling problem to 32/64 cores/threads. Windows 10 Pro is the problem.

Pete
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Threadripper 32 core reviewPer Hesselgren2018/08/13 07:50 AM
  Threadripper 32 core reviewwumpus2018/08/13 08:32 AM
    Threadripper 32 core reviewLinus Torvalds2018/08/13 01:12 PM
      Threadripper 32 core reviewpgerassi2018/08/13 02:16 PM
        Threadripper 32 core reviewLinus Torvalds2018/08/13 02:48 PM
          Less Power Hungry Part?Passing Through2018/08/13 03:19 PM
          Threadripper 32 core reviewGroo2018/08/13 03:50 PM
            Threadripper 32 core reviewPassing Through2018/08/14 11:45 AM
          Threadripper 32 core reviewpgerassi2018/08/13 05:41 PM
          Threadripper 32 core reviewjuanrga2018/08/14 03:44 AM
            Threadripper 32 core reviewLinus Torvalds2018/08/14 08:37 AM
              Threadripper 32 core reviewjuanrga2018/08/14 10:18 AM
                Threadripper 32 core reviewjuanrga2018/08/16 01:16 AM
          Threadripper 32 core reviewJukka Larja2018/08/14 07:41 AM
          [side topic] personal supercomputer (Threadripper 32 core review)hobold2018/08/16 03:47 AM
  Threadripper 32 core reviewAlberto2018/08/13 10:11 AM
    Threadripper 32 core reviewMaynard Handley2018/08/13 12:27 PM
      Threadripper 32 core reviewDoug S2018/08/13 01:01 PM
        Threadripper 32 core reviewAlberto2018/08/14 01:50 AM
          Threadripper 32 core reviewnone2018/08/14 04:08 AM
          On revenues and right choicesAM2018/08/14 07:33 AM
      Threadripper 32 core reviewAlberto2018/08/13 11:57 PM
        Threadripper 32 core reviewJeff S.2018/08/14 06:00 AM
        Shrinks and power densityAM2018/08/14 07:49 AM
          Shrinks and power densityDavid Hess2018/08/18 12:30 PM
            Shrinks and power densityAM2018/08/19 07:12 AM
              Shrinks and power densityanonymou52018/08/19 08:13 PM
                Shrinks and power densityJohn H2018/08/20 04:16 PM
        Threadripper 32 core reviewDavid Hess2018/08/18 12:43 PM
  Threadripper 32 core reviewanon2018/08/13 01:48 PM
    Threadripper 32 core reviewanon2018/08/13 02:25 PM
      *while (NT)anon2018/08/13 02:26 PM
      Threadripper 32 core reviewpgerassi2018/08/13 06:34 PM
        Threadripper 32 core reviewanon2018/08/14 04:40 AM
      Threadripper 32 core reviewGabriele Svelto2018/08/14 03:22 AM
        Threadripper 32 core reviewanon2018/08/14 04:44 AM
  Flock of Chickens.Jouni Osmala2018/08/13 07:04 PM
    Flock of Chickens.none2018/08/14 12:43 AM
      AnandTech review clarityJeff S.2018/08/14 04:06 AM
        AnandTech review claritynone2018/08/14 04:15 AM
          AnandTech review clarityJeff S.2018/08/14 04:36 AM
            AnandTech review claritynone2018/08/14 04:44 AM
            AnandTech review claritynone2018/08/14 04:53 AM
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