Latency and HPC Workloads

Article: Intel's Near-Threshold Voltage Computing and Applications
By: SHK (nomail.delete@this.mail.com), October 8, 2012 4:42 am
Room: Moderated Discussions
Robert Myers (rbmyersusa.delete@this.gmail.com) on October 4, 2012 10:24 am wrote:

anon (anon.delete@this.anon.com) on October 3, 2012 6:50 pm wrote:

>

> What do you mean by latency?
>

As I have been involved in
discussions, latency has always referred to the latency of memory references,
whether to cache, to local memory, or to remote
memory.

www.sandia.gov/~rcmurph/doc/latency.pdf

Robert.


One of the things i really don't like in HPC since the whole "clusters take over vector processors" has taken place is that even the top machines on top500 are stuck with commodity DRAM+hardware managed caches. Everybody is complaining about the memory wall but something like RLDRAM-3 (AFAIK) has never been used outside networking equipment.
Disregarding the physical implementation seems that a Cray T90 was a much better and balanced architecture for HPC.
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TopicPosted ByDate
New article: Intel's Near-Threshold ComputingDavid Kanter09/18/12 11:26 AM
  Higher SRAM voltage and shared L1Paul A. Clayton09/18/12 01:38 PM
    Higher SRAM voltage and shared L1David Kanter09/18/12 04:20 PM
      Higher SRAM voltage and shared L1Eric09/20/12 09:44 AM
        Higher SRAM voltage and shared L1David Kanter09/20/12 11:24 AM
      Yes, that kind of asynchronousPaul A. Clayton09/20/12 01:53 PM
    Higher SRAM voltage and shared L1somebody09/19/12 08:27 AM
      So micro-turboboost is doubly impracticalPaul A. Clayton09/20/12 01:53 PM
  Big littleDoug S09/18/12 02:04 PM
    Big littleDavid Kanter09/18/12 03:05 PM
    Big littleRicardo B09/19/12 03:06 AM
  New article: Intel's Near-Threshold Computingdefderdar09/18/12 08:39 PM
    New article: Intel's Near-Threshold Computingtarlinian09/19/12 07:32 AM
      New article: Intel's Near-Threshold ComputingDavid Kanter09/19/12 09:44 AM
  New article: Intel's Near-Threshold ComputingMark Christiansen09/19/12 10:31 AM
    New article: Intel's Near-Threshold ComputingChris Brodersen09/19/12 11:54 AM
  New article: Intel's Near-Threshold ComputingEric09/20/12 09:47 AM
  Latency and HPC WorkloadsRobert Myers10/03/12 09:52 AM
    Latency and HPC Workloadsanon10/03/12 05:50 PM
      Latency and HPC WorkloadsRobert Myers10/04/12 09:24 AM
        Latency and HPC WorkloadsSHK10/08/12 04:42 AM
          Latency and HPC WorkloadsMichael S10/08/12 12:59 PM
            Latency and HPC WorkloadsSHK10/08/12 01:42 PM
              Latency and HPC WorkloadsMichael S10/08/12 04:12 PM
                Latency and HPC Workloadsforestlaughing10/15/12 07:41 AM
                  The original context was Micron RLDRAM (NT)Michael S10/15/12 07:55 AM
                    The original context was Micron RLDRAMforestlaughing10/15/12 09:21 AM
              Latency and HPC Workloads - Why not SRAM?Kevin G10/09/12 08:48 AM
                Latency and HPC Workloads - Why not SRAM?Michael S10/09/12 09:33 AM
                  Latency and HPC Workloads - Why not SRAM?SHK10/09/12 11:55 AM
                    Why not SRAM? - CapacityRohit10/09/12 08:13 PM
                  Latency and HPC Workloads - Why not SRAM?Kevin G10/09/12 02:04 PM
                    Latency and HPC Workloads - Why not SRAM?Michael S10/09/12 03:52 PM
                      Latency and HPC Workloads - Why not SRAM?Robert Myers10/10/12 09:11 AM
                        Latency and HPC Workloads - Why not SRAM?forestlaughing10/15/12 07:02 AM
                          Latency and HPC Workloads - Why not SRAM?Robert Myers10/15/12 08:04 AM
                            Latency and HPC Workloads - Why not SRAM?forestlaughing10/16/12 08:13 AM
                          Latency and HPC Workloads - Why not SRAM?SHK10/16/12 07:12 AM
                    Latency and HPC Workloads - Why not SRAM?slacker10/11/12 12:35 PM
                      SRAM leakageDavid Kanter10/11/12 02:00 PM
          Latency and HPC Workloadsforestlaughing10/15/12 07:57 AM
            Latency and HPC WorkloadsRobert Myers10/16/12 06:28 AM
              Latency and HPC WorkloadsMichael S10/16/12 06:35 AM
              Latency and HPC Workloadsanon10/16/12 07:17 AM
                Latency and HPC WorkloadsRobert Myers10/16/12 08:56 AM
                  Supercomputer variant of Kahan quotePaul A. Clayton10/16/12 10:09 AM
                    Supercomputer variant of Kahan quoteanon10/17/12 12:17 AM
                      Supercomputer variant of Kahan quoteRobert Myers10/17/12 03:34 AM
                        Supercomputer variant of Kahan quoteanon10/17/12 04:12 AM
                          Supercomputer variant of Kahan quoteRobert Myers10/17/12 01:38 PM
                            Supercomputer variant of Kahan quoteanon10/17/12 04:24 PM
                              Supercomputer variant of Kahan quoteRobert Myers10/17/12 04:45 PM
                                Supercomputer variant of Kahan quoteanon10/17/12 04:58 PM
                                Supercomputer variant of Kahan quoteanon10/17/12 04:58 PM
                                  Supercomputer variant of Kahan quoteRobert Myers10/17/12 06:14 PM
                                    Supercomputer variant of Kahan quoteanon10/17/12 07:36 PM
                                      Supercomputer variant of Kahan quoteRobert Myers10/18/12 08:47 AM
                                        Supercomputer variant of Kahan quoteanon10/19/12 01:34 AM
                                          Supercomputer variant of Kahan quoteanon10/19/12 03:47 AM
                                          Supercomputer variant of Kahan quoteRobert Myers10/19/12 02:14 PM
                        Supercomputer variant of Kahan quoteMichael S10/17/12 05:56 PM
                          Supercomputer variant of Kahan quoteanon10/17/12 08:02 PM
                            Supercomputer variant of Kahan quoteRobert Myers10/18/12 12:29 PM
                              Supercomputer variant of Kahan quoteanon10/19/12 01:27 AM
                                Supercomputer variant of Kahan quoteRobert Myers10/19/12 06:24 AM
                                  Supercomputer variant of Kahan quoteanon10/19/12 07:00 AM
                                    Supercomputer variant of Kahan quoteRobert Myers10/19/12 08:28 AM
                                      Supercomputer variant of Kahan quoteanon10/19/12 09:27 AM
                              Supercomputer variant of Kahan quoteforestlaughing10/19/12 09:26 AM
                                Supercomputer variant of Kahan quoteRobert Myers10/19/12 06:04 PM
                                  Supercomputer variant of Kahan quoteEmil Briggs10/20/12 03:52 AM
                                    Supercomputer variant of Kahan quoteRobert Myers10/20/12 06:51 AM
                                      Supercomputer variant of Kahan quoteEmil Briggs10/20/12 07:33 AM
                                        Supercomputer variant of Kahan quoteEmil Briggs10/20/12 07:34 AM
                                          Supercomputer variant of Kahan quoteRobert Myers10/20/12 08:35 AM
                                            Supercomputer variant of Kahan quoteEmil Briggs10/20/12 09:04 AM
                                              Supercomputer variant of Kahan quoteRobert Myers10/20/12 10:23 AM
                  Latency and HPC Workloadsanon10/16/12 05:48 PM
                    Latency and HPC Workloadsforestlaughing10/19/12 10:43 AM
              Latency and HPC Workloadsforestlaughing10/19/12 08:38 AM
                Latency and HPC WorkloadsRobert Myers10/19/12 10:40 AM
                Potential false economics in researchPaul A. Clayton10/19/12 11:54 AM
                  Potential false economics in researchVincent Diepeveen10/20/12 07:59 AM
                  Potential false economics in researchforestlaughing10/23/12 09:56 AM
                    Potential false economics in researchRobert Myers10/23/12 06:16 PM
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