VR-ZONE KNC B0 leak, poor number?

Article: Computational Efficiency for CPUs and GPUs in 2012
By: jp (asdasdf.delete@this.gmail.com), August 7, 2012 10:22 am
Room: Moderated Discussions
aaron spink (aaronspink.delete@this.notearthlink.net) on August 7, 2012 7:20 am wrote:
> jp (asdfasdf.delete@this.gmail.com) on August 7, 2012 3:08 am wrote:
>
> >
> Just a note on
> > the performance numbers mentioned before. From what I
> heard KNC does not have
> > the FMA instruction.
> >
> All public data
> confirms that it has FMA.
>
>
> > On the K20 we can
> > expect conservative
> clocks at maybe ~ 0.8 Ghz which would put us at 15*64*0.8*2
> > => 1536
> GFLOPs DP, way ahead of the competition... Given that GPUs are
> > already
> hitting 80% for matrix operation applications we should be seeing at
> >
> least 1.22 TFLOPs by a conservative estimate.
> >
> .8 Ghz will be pushing it.
> K10 has the advantage of not having to deal with large die effects, having a
> much larger volume from which to bin parts, etc, and only reached .75 Ghz. Also
> getting full yield off such a large die is going to be somewhat rare. Rumors
> are that the K20 will not have a full 15 SMXes and will use 1 or more for die
> salvage in order to get enough working parts further lowering its
> performance.
>

Thr rumours say that they already salvaged one to get the 15 SMX:es that they've disclosed here: http://www.nvidia.com/content/PDF/kepler/NVIDIA-Kepler-GK110-Architecture-Whitepaper.pdf




> > More importantly, for real
> > world applications we
> should be seeing 15 * 192 * 2 * 0.8 => 4608 SP GFLOPS.
> > And yes, single
> precision is extremely important within for example image and
> > signal
> processing applications.
> >
> If you care about SP, you are likely going to
> be using K10 and not K20.

While the K10 is an interesting option it's 192 bit interface is a bit dscouraging while it also lacks A LOT of the new features presented in K20, Hyper-Q, dynamic parallellism, the new GMU, and GPUdirect. Another great feature of the K20 is that it will support up to 255 register/thread (up from 63 on Fermi) which is going to do wonders for BLAS performance! (aswell as your cheerished Linpack performance...)

And actually if I was happy with K10 i would just buy the GTX690 ( K10 is just 690 downclocked) which does run at 0.925 Ghz.



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New Article: Compute Efficiency 2012David Kanter07/25/12 12:37 AM
  New Article: Compute Efficiency 2012SHK07/25/12 01:31 AM
    New Article: Compute Efficiency 2012David Kanter07/25/12 01:42 AM
  New Article: Compute Efficiency 2012none07/25/12 02:18 AM
    New Article: Compute Efficiency 2012David Kanter07/25/12 10:25 AM
  GCN (NT)EBFE07/25/12 02:25 AM
    GCN - TFLOP DPjp08/09/12 12:58 PM
      GCN - TFLOP DPDavid Kanter08/09/12 02:32 PM
        GCN - TFLOP DPKevin G08/11/12 04:22 PM
      GCN - TFLOP DPEric08/09/12 04:12 PM
        GCN - TFLOP DPjp08/10/12 12:23 AM
          GCN - TFLOP DPEBFE08/12/12 07:27 PM
            GCN - TFLOP DPjp08/13/12 01:02 AM
              GCN - TFLOP DPEBFE08/13/12 06:45 PM
                GCN - TFLOP DPjp08/14/12 12:21 AM
  New Article: Compute Efficiency 2012Adrian07/25/12 03:39 AM
    New Article: Compute Efficiency 2012EBFE07/25/12 08:33 AM
    New Article: Compute Efficiency 2012David Kanter07/25/12 10:11 AM
  New Article: Compute Efficiency 2012sf07/25/12 05:46 AM
    New Article: Compute Efficiency 2012aaron spink07/25/12 08:08 AM
      New Article: Compute Efficiency 2012someone07/25/12 09:06 AM
    New Article: Compute Efficiency 2012David Kanter07/25/12 10:14 AM
      New Article: Compute Efficiency 2012EBFE07/26/12 01:27 AM
        BG/QDavid Kanter07/26/12 08:31 AM
          VR-ZONE KNC B0 leak, poor number?EBFE08/03/12 12:57 AM
            VR-ZONE KNC B0 leak, poor number?Eric08/03/12 06:59 AM
              VR-ZONE KNC B0 leak, poor number?EBFE08/04/12 05:37 AM
                VR-ZONE KNC B0 leak, poor number?aaron spink08/04/12 05:51 PM
                Leaks != productsDavid Kanter08/05/12 02:19 AM
                  Leaks != productsEBFE08/06/12 01:49 AM
                VR-ZONE KNC B0 leak, poor number?Eric08/05/12 09:37 AM
                  VR-ZONE KNC B0 leak, poor number?EBFE08/06/12 02:09 AM
                    VR-ZONE KNC B0 leak, poor number?aaron spink08/06/12 03:33 AM
                      VR-ZONE KNC B0 leak, poor number?jp08/07/12 02:08 AM
                        VR-ZONE KNC B0 leak, poor number?Eric08/07/12 03:58 AM
                          VR-ZONE KNC B0 leak, poor number?jp08/07/12 04:17 AM
                            VR-ZONE KNC B0 leak, poor number?Eric08/07/12 04:22 AM
                              VR-ZONE KNC B0 leak, poor number?anonymou508/07/12 08:43 AM
                            VR-ZONE KNC B0 leak, poor number?jp08/07/12 04:23 AM
                              VR-ZONE KNC B0 leak, poor number?aaron spink08/07/12 06:24 AM
                        VR-ZONE KNC B0 leak, poor number?aaron spink08/07/12 06:20 AM
                          VR-ZONE KNC B0 leak, poor number?jp08/07/12 10:22 AM
                            VR-ZONE KNC B0 leak, poor number?EduardoS08/07/12 02:15 PM
                        KNC has FMADavid Kanter08/07/12 08:17 AM
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        New Article: Compute Efficiency 2012anon07/29/12 01:25 AM
          New Article: Compute Efficiency 2012hobold07/29/12 10:53 AM
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    Best case for GPUsDavid Kanter07/25/12 10:28 AM
      Best case for GPUsfranzliszt07/25/12 12:39 PM
      Best case for GPUsChuck07/25/12 07:13 PM
        Best case for GPUsDavid Kanter07/25/12 08:45 PM
        Best case for GPUsEric07/27/12 04:51 AM
  Silverthorn data pointMichael S07/25/12 01:45 PM
    Silverthorn data pointDavid Kanter07/25/12 03:06 PM
  New Article: Compute Efficiency 2012Unununium07/25/12 04:55 PM
    New Article: Compute Efficiency 2012EduardoS07/25/12 07:12 PM
      Ops... I'm wrong...EduardoS07/25/12 07:14 PM
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    New Article: Compute Efficiency 2012Michael S07/26/12 01:33 AM
  Line and factorMoritz07/26/12 12:34 AM
    Line and factorPeter Boyle07/27/12 06:57 AM
      not entirelyMoritz07/27/12 11:22 AM
      Line and factorEduardoS07/27/12 04:24 PM
        Line and factorMoritz07/28/12 11:52 AM
  tables Michael S07/26/12 01:39 AM
  Interlagos L2+L3Rana07/26/12 02:13 AM
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        SP vs DP & performance metricsEric07/27/12 06:57 AM
          SP vs DP & performance metricsjp07/27/12 08:18 AM
            SP vs DP & performance metricsaaron spink07/27/12 08:36 AM
              SP vs DP & performance metricsjp07/27/12 08:47 AM
                "Global" --> systemPaul A. Clayton07/27/12 09:31 AM
                  "Global" --> systemjp07/27/12 02:55 PM
                    "Global" --> systemaaron spink07/27/12 06:33 PM
                      "Global" --> systemjp07/28/12 01:00 AM
                        "Global" --> systemaaron spink07/28/12 05:54 AM
                          "Global" --> systemjp07/29/12 01:12 AM
                            "Global" --> systemaaron spink07/29/12 04:03 AM
                              "Global" --> systemnone07/29/12 08:05 AM
                                "Global" --> systemEduardoS07/29/12 09:26 AM
                                "Global" --> systemjp07/30/12 01:24 AM
                                  "Global" --> systemaaron spink07/30/12 02:05 AM
                                "Global" --> systemaaron spink07/30/12 02:03 AM
                                  daxpy is STREAM TRIADPaul A. Clayton07/30/12 05:10 AM
                SP vs DP & performance metricsaaron spink07/27/12 06:25 PM
                  SP vs DP & performance metricsEmil Briggs07/28/12 05:40 AM
                    SP vs DP & performance metricsaaron spink07/28/12 06:05 AM
                      SP vs DP & performance metricsjp07/28/12 10:04 AM
                        SP vs DP & performance metricsBrett07/28/12 02:32 PM
                      SP vs DP & performance metricsEmil Briggs07/28/12 05:11 PM
                        SP vs DP & performance metricsanon07/29/12 01:53 AM
                        SP vs DP & performance metricsaaron spink07/29/12 04:39 AM
                          Coherency for discretesRohit07/29/12 08:24 AM
                          SP vs DP & performance metricsanon07/29/12 10:09 AM
                          SP vs DP & performance metricsEric07/29/12 12:08 PM
        SP vs DP & performance metricsaaron spink07/27/12 08:25 AM
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            Memory power and bandwidth?David Kanter08/04/12 10:22 AM
              Memory power and bandwidth?Michael S08/04/12 01:36 PM
              Memory power and bandwidth?Iain McClatchie08/06/12 01:09 PM
              Memory power and bandwidth?Eric08/07/12 05:28 PM
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                  WorkloadsEric08/09/12 04:21 PM
                Latency and bandwidth bottlenecks Paul A. Clayton08/08/12 03:02 PM
                  Latency and bandwidth bottlenecks Eric08/09/12 04:32 PM
                    Latency and bandwidth bottlenecks none08/10/12 05:06 AM
                  Latency and bandwidth bottlenecks -> BDPajensen08/11/12 02:21 PM
            Memory power and bandwidth?Ingeneer08/06/12 10:26 AM
  NV aims for 1.8+ TFLOPS DP ?jp08/11/12 12:21 PM
    NV aims for 1.8+ TFLOPS DP ?David Kanter08/11/12 08:25 PM
      NV aims for 1.8+ TFLOPS DP ?jp08/12/12 01:45 AM
      NV aims for 1.8+ TFLOPS DP ?EBFE08/12/12 09:02 PM
        NV aims for 1.8+ TFLOPS DP ?jp08/13/12 12:54 AM
          NV aims for 1.8+ TFLOPS DP ?Gabriele Svelto08/13/12 08:16 AM
            NV aims for 1.8+ TFLOPS DP ?Vincent Diepeveen08/14/12 02:04 AM
          NV aims for 1.8+ TFLOPS DP ?David Kanter08/13/12 08:50 AM
            NV aims for 1.8+ TFLOPS DP ?jp08/13/12 10:17 AM
        NV aims for 1.8+ TFLOPS DP ?EduardoS08/13/12 05:45 AM
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