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 11:22 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 Kanter2012/07/25 01:37 AM
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      GCN - TFLOP DPEric2012/08/09 05:12 PM
        GCN - TFLOP DPjp2012/08/10 01:23 AM
          GCN - TFLOP DPEBFE2012/08/12 08:27 PM
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          VR-ZONE KNC B0 leak, poor number?EBFE2012/08/03 01:57 AM
            VR-ZONE KNC B0 leak, poor number?Eric2012/08/03 07:59 AM
              VR-ZONE KNC B0 leak, poor number?EBFE2012/08/04 06:37 AM
                VR-ZONE KNC B0 leak, poor number?aaron spink2012/08/04 06:51 PM
                Leaks != productsDavid Kanter2012/08/05 03:19 AM
                  Leaks != productsEBFE2012/08/06 02:49 AM
                VR-ZONE KNC B0 leak, poor number?Eric2012/08/05 10:37 AM
                  VR-ZONE KNC B0 leak, poor number?EBFE2012/08/06 03:09 AM
                    VR-ZONE KNC B0 leak, poor number?aaron spink2012/08/06 04:33 AM
                      VR-ZONE KNC B0 leak, poor number?jp2012/08/07 03:08 AM
                        VR-ZONE KNC B0 leak, poor number?Eric2012/08/07 04:58 AM
                          VR-ZONE KNC B0 leak, poor number?jp2012/08/07 05:17 AM
                            VR-ZONE KNC B0 leak, poor number?Eric2012/08/07 05:22 AM
                              VR-ZONE KNC B0 leak, poor number?anonymou52012/08/07 09:43 AM
                            VR-ZONE KNC B0 leak, poor number?jp2012/08/07 05:23 AM
                              VR-ZONE KNC B0 leak, poor number?aaron spink2012/08/07 07:24 AM
                        VR-ZONE KNC B0 leak, poor number?aaron spink2012/08/07 07:20 AM
                          VR-ZONE KNC B0 leak, poor number?jp2012/08/07 11:22 AM
                            VR-ZONE KNC B0 leak, poor number?EduardoS2012/08/07 03:15 PM
                        KNC has FMADavid Kanter2012/08/07 09:17 AM
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                  "Global" --> systemjp2012/07/27 03:55 PM
                    "Global" --> systemaaron spink2012/07/27 07:33 PM
                      "Global" --> systemjp2012/07/28 02:00 AM
                        "Global" --> systemaaron spink2012/07/28 06:54 AM
                          "Global" --> systemjp2012/07/29 02:12 AM
                            "Global" --> systemaaron spink2012/07/29 05:03 AM
                              "Global" --> systemnone2012/07/29 09:05 AM
                                "Global" --> systemEduardoS2012/07/29 10:26 AM
                                "Global" --> systemjp2012/07/30 02:24 AM
                                  "Global" --> systemaaron spink2012/07/30 03:05 AM
                                "Global" --> systemaaron spink2012/07/30 03:03 AM
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            NV aims for 1.8+ TFLOPS DP ?jp2012/08/13 11:17 AM
        NV aims for 1.8+ TFLOPS DP ?EduardoS2012/08/13 06:45 AM
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