AnandTech review clarity

By: none (none.delete@this.none.com), August 14, 2018 4:15 am
Room: Moderated Discussions
Jeff S. (fakity.delete@this.fake.com) on August 14, 2018 5:06 am wrote:
> none (none.delete@this.none.com) on August 14, 2018 1:43 am wrote:
> > Jouni Osmala (a.delete@this.b.com) on August 13, 2018 8:04 pm wrote:
> > > In the single threaded benchmarks 2990WX got numbers that put it deeply in the
> > > category of flock of chickens in several peoples theoretical arguments.
> > > Here are the single threaded benchmarks of Anandtech. Comparison to best CPU in each category.
> > > Others may have low threads, but they are not explitely named as single threaded.
> > > y crucher 122 seconds vs 53 seconds.
> > > Geekbench 4250 vs 5846
> > > 3DPM 106 vs 156
> > > Cinebench v11.5: 1.9 vs 2.25
> > > Cinebench v10: 8825 vs 9677
> > > On average the fastest single threaded is 58% faster. (Didn't count Cinebench twice).
>
> > y-cruncher is very peculiar in its heavy use of AVX2 and AVX-512. For instance it got a
> > speedup of 20-30% with AVX-512.
>
> There were multiple things that seemed off to me about Ian's review (mostly around the totally
> unexplained power measurements and analysis), but the y-cruncher results don't look weird to
> me whatsoever. Alex, the author of y-cruncher and coincidentally also my colleague, also knows
> Ian I think, so I may have a back channel in getting parts of the review clarified.

Just to clarify, I didn't say the y-cruncher results are wrong or demonstrate a poor software implementation. It's just that it seems heavily tuned to benefit the most from
multiple FMA (FFT-based multiplication) and the author is very good at that :-)

So what this test shows is that Intel cores are much better at heavily tuned FP (FMA)
than AMD cores.
< 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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