Latency and HPC Workloads - Why not SRAM?

Article: Intel's Near-Threshold Voltage Computing and Applications
By: forestlaughing (forestlaughing.delete@this.yahoo.com), October 16, 2012 9:13 am
Room: Moderated Discussions
Robert Myers (rbmyersusa.delete@this.gmail.com) on October 15, 2012 9:04 am wrote:
> > And you wouldn't know anything about self promotion, would
> > you
> Robert? ;)
> >
> If people recognize my name at all, it's because I have a few hobby
> horses that I have mostly stuck to. Given that I usually pick topics on which
> there is a tidal wave of mindless repetition opposed to what I am usually
> saying, it's perhaps a shame that I don't have even more talent for
> self-promotion, if that's what you want to call it. If you think I'm in the
> same league with IBM, LLNL, ORNL, and the University of Tennessee, I'm
> flattered. They have entire teams at each location. There is just one of
> me.

I don't mean to poke at you too much. Self promotion is one of the primary job functions of the academic.

Your argument is valid. Many applications are left behind in the rush to commodity processors, and huge-scale MPPs. However, I think you mischaracterize and underestimate the labs and vendors. No one is thrilled by the relative drop-off in memory and network bandwidth, compared to flops. Everyone would like machines that are lower latency, have gobs of bandwidth, are easier to program, and use very little power. It is also that case that the labs are aware that smaller machines, with higher per-node performance, help a number of applications, and many labs do buy such machines, they are just not the flagship system.

The NNSA labs have the luxury of buying supercomputers to run 8-10 applications. However, most of the rest of HPC buyers have a diverse user base, and would really like to offer revolutionary performance for all of their users. However they're just buying what they're able to buy, and meeting the needs of as many users as possible. To be sure, the staff at the big labs look at running linpack as an tiresome chore. They have to crow a little, about their accomplishments, and linpack is the only metric the news media is interested in reporting. They don't buy fast linpack machines in order to run linpack. They buy the best machine they can, for the largest number of their users as they can, given a finite budget, and then talk about linpack because that's the only industry-wide vocabulary.







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TopicPosted ByDate
New article: Intel's Near-Threshold ComputingDavid Kanter2012/09/18 12:26 PM
  Higher SRAM voltage and shared L1Paul A. Clayton2012/09/18 02:38 PM
    Higher SRAM voltage and shared L1David Kanter2012/09/18 05:20 PM
      Higher SRAM voltage and shared L1Eric2012/09/20 10:44 AM
        Higher SRAM voltage and shared L1David Kanter2012/09/20 12:24 PM
      Yes, that kind of asynchronousPaul A. Clayton2012/09/20 02:53 PM
    Higher SRAM voltage and shared L1somebody2012/09/19 09:27 AM
      So micro-turboboost is doubly impracticalPaul A. Clayton2012/09/20 02:53 PM
  Big littleDoug S2012/09/18 03:04 PM
    Big littleDavid Kanter2012/09/18 04:05 PM
    Big littleRicardo B2012/09/19 04:06 AM
  New article: Intel's Near-Threshold Computingdefderdar2012/09/18 09:39 PM
    New article: Intel's Near-Threshold Computingtarlinian2012/09/19 08:32 AM
      New article: Intel's Near-Threshold ComputingDavid Kanter2012/09/19 10:44 AM
  New article: Intel's Near-Threshold ComputingMark Christiansen2012/09/19 11:31 AM
    New article: Intel's Near-Threshold ComputingChris Brodersen2012/09/19 12:54 PM
  New article: Intel's Near-Threshold ComputingEric2012/09/20 10:47 AM
  Latency and HPC WorkloadsRobert Myers2012/10/03 10:52 AM
    Latency and HPC Workloadsanon2012/10/03 06:50 PM
      Latency and HPC WorkloadsRobert Myers2012/10/04 10:24 AM
        Latency and HPC WorkloadsSHK2012/10/08 05:42 AM
          Latency and HPC WorkloadsMichael S2012/10/08 01:59 PM
            Latency and HPC WorkloadsSHK2012/10/08 02:42 PM
              Latency and HPC WorkloadsMichael S2012/10/08 05:12 PM
                Latency and HPC Workloadsforestlaughing2012/10/15 08:41 AM
                  The original context was Micron RLDRAM (NT)Michael S2012/10/15 08:55 AM
                    The original context was Micron RLDRAMforestlaughing2012/10/15 10:21 AM
              Latency and HPC Workloads - Why not SRAM?Kevin G2012/10/09 09:48 AM
                Latency and HPC Workloads - Why not SRAM?Michael S2012/10/09 10:33 AM
                  Latency and HPC Workloads - Why not SRAM?SHK2012/10/09 12:55 PM
                    Why not SRAM? - CapacityRohit2012/10/09 09:13 PM
                  Latency and HPC Workloads - Why not SRAM?Kevin G2012/10/09 03:04 PM
                    Latency and HPC Workloads - Why not SRAM?Michael S2012/10/09 04:52 PM
                      Latency and HPC Workloads - Why not SRAM?Robert Myers2012/10/10 10:11 AM
                        Latency and HPC Workloads - Why not SRAM?forestlaughing2012/10/15 08:02 AM
                          Latency and HPC Workloads - Why not SRAM?Robert Myers2012/10/15 09:04 AM
                            Latency and HPC Workloads - Why not SRAM?forestlaughing2012/10/16 09:13 AM
                          Latency and HPC Workloads - Why not SRAM?SHK2012/10/16 08:12 AM
                    Latency and HPC Workloads - Why not SRAM?slacker2012/10/11 01:35 PM
                      SRAM leakageDavid Kanter2012/10/11 03:00 PM
          Latency and HPC Workloadsforestlaughing2012/10/15 08:57 AM
            Latency and HPC WorkloadsRobert Myers2012/10/16 07:28 AM
              Latency and HPC WorkloadsMichael S2012/10/16 07:35 AM
              Latency and HPC Workloadsanon2012/10/16 08:17 AM
                Latency and HPC WorkloadsRobert Myers2012/10/16 09:56 AM
                  Supercomputer variant of Kahan quotePaul A. Clayton2012/10/16 11:09 AM
                    Supercomputer variant of Kahan quoteanon2012/10/17 01:17 AM
                      Supercomputer variant of Kahan quoteRobert Myers2012/10/17 04:34 AM
                        Supercomputer variant of Kahan quoteanon2012/10/17 05:12 AM
                          Supercomputer variant of Kahan quoteRobert Myers2012/10/17 02:38 PM
                            Supercomputer variant of Kahan quoteanon2012/10/17 05:24 PM
                              Supercomputer variant of Kahan quoteRobert Myers2012/10/17 05:45 PM
                                Supercomputer variant of Kahan quoteanon2012/10/17 05:58 PM
                                Supercomputer variant of Kahan quoteanon2012/10/17 05:58 PM
                                  Supercomputer variant of Kahan quoteRobert Myers2012/10/17 07:14 PM
                                    Supercomputer variant of Kahan quoteanon2012/10/17 08:36 PM
                                      Supercomputer variant of Kahan quoteRobert Myers2012/10/18 09:47 AM
                                        Supercomputer variant of Kahan quoteanon2012/10/19 02:34 AM
                                          Supercomputer variant of Kahan quoteanon2012/10/19 04:47 AM
                                          Supercomputer variant of Kahan quoteRobert Myers2012/10/19 03:14 PM
                        Supercomputer variant of Kahan quoteMichael S2012/10/17 06:56 PM
                          Supercomputer variant of Kahan quoteanon2012/10/17 09:02 PM
                            Supercomputer variant of Kahan quoteRobert Myers2012/10/18 01:29 PM
                              Supercomputer variant of Kahan quoteanon2012/10/19 02:27 AM
                                Supercomputer variant of Kahan quoteRobert Myers2012/10/19 07:24 AM
                                  Supercomputer variant of Kahan quoteanon2012/10/19 08:00 AM
                                    Supercomputer variant of Kahan quoteRobert Myers2012/10/19 09:28 AM
                                      Supercomputer variant of Kahan quoteanon2012/10/19 10:27 AM
                              Supercomputer variant of Kahan quoteforestlaughing2012/10/19 10:26 AM
                                Supercomputer variant of Kahan quoteRobert Myers2012/10/19 07:04 PM
                                  Supercomputer variant of Kahan quoteEmil Briggs2012/10/20 04:52 AM
                                    Supercomputer variant of Kahan quoteRobert Myers2012/10/20 07:51 AM
                                      Supercomputer variant of Kahan quoteEmil Briggs2012/10/20 08:33 AM
                                        Supercomputer variant of Kahan quoteEmil Briggs2012/10/20 08:34 AM
                                          Supercomputer variant of Kahan quoteRobert Myers2012/10/20 09:35 AM
                                            Supercomputer variant of Kahan quoteEmil Briggs2012/10/20 10:04 AM
                                              Supercomputer variant of Kahan quoteRobert Myers2012/10/20 11:23 AM
                  Latency and HPC Workloadsanon2012/10/16 06:48 PM
                    Latency and HPC Workloadsforestlaughing2012/10/19 11:43 AM
              Latency and HPC Workloadsforestlaughing2012/10/19 09:38 AM
                Latency and HPC WorkloadsRobert Myers2012/10/19 11:40 AM
                Potential false economics in researchPaul A. Clayton2012/10/19 12:54 PM
                  Potential false economics in researchVincent Diepeveen2012/10/20 08:59 AM
                  Potential false economics in researchforestlaughing2012/10/23 10:56 AM
                    Potential false economics in researchRobert Myers2012/10/23 07:16 PM
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