not entirely

Article: Computational Efficiency for CPUs and GPUs in 2012
By: Moritz (better.delete@this.not.tell), July 27, 2012 12:22 pm
Room: Moderated Discussions
Peter Boyle (paboyle.delete@this.ph.ed.ac.uk) on July 27, 2012 7:57 am wrote:
> The reason
> BG/Q has bigger area/flop is because it has a huge
> cache.

Sure, the difference is not just because of different clock, voltage and number of units, but also architectural on a higher level.

> BG/Q would have
> higher power efficiency AND higher area efficiency
> if it dropped the huge cache

I doubt that, because it would probably not get to the data quickly enough.

It is a bit of nonsense, but I did write: "Under the circumstances common to those designs."
What I ment is, that this factor is also throwing architecture into the kettle. It is a very general line that describes the best that is currently possible regardless of whether it is more of a CPU or GPU. If you make all the right choices you would land on that line. You may choose where, depending on your cost preference.
That line is around the best that is possible independent of the cache.
Of cause flops are not flops, it depends on the problem and the system.
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New Article: Compute Efficiency 2012David Kanter2012/07/25 01:37 AM
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    New Article: Compute Efficiency 2012David Kanter2012/07/25 02:42 AM
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        GCN - TFLOP DPKevin G2012/08/11 05:22 PM
      GCN - TFLOP DPEric2012/08/09 05:12 PM
        GCN - TFLOP DPjp2012/08/10 01:23 AM
          GCN - TFLOP DPEBFE2012/08/12 08:27 PM
            GCN - TFLOP DPjp2012/08/13 02:02 AM
              GCN - TFLOP DPEBFE2012/08/13 07:45 PM
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            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
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                  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
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      Best case for GPUsfranzliszt2012/07/25 01:39 PM
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                      "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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                    SP vs DP & performance metricsaaron spink2012/07/28 07:05 AM
                      SP vs DP & performance metricsjp2012/07/28 11:04 AM
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                          SP vs DP & performance metricsanon2012/07/29 11:09 AM
                          SP vs DP & performance metricsEric2012/07/29 01:08 PM
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              Memory power and bandwidth?Michael S2012/08/04 02:36 PM
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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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