Energy vs. power

Article: Nehalem Performance Preview
By: slacker (s.delete@this.lack.er), April 10, 2009 7:00 pm
Room: Moderated Discussions
Jack (Jumpingjack6@verizon.net) on 4/10/09 wrote:
---------------------------
>Peak power will dictate various thermal cooling designs and such, but total energy
>consumed determines energy efficiency. A server can have 20% higher peak power
>but if it completes the task in 50% less time will be more energy efficient.

Only guaranteed to be true if you're strictly looking at the time span to complete the task on each server. Otherwise, you need to add the idle energy consumption when the faster server is sitting idle. This is what shot the Harpertown platform in the foot for workloads which you can imagine.

David: consider writing a short article explaining energy vs. power, and where each metric is relevant.
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TopicPosted ByDate
Nehalem review upDavid Kanter2009/04/07 03:43 AM
  Nehalem review upnoone2009/04/07 06:48 AM
  Strange jbb on HarpertownHenrik S2009/04/07 08:29 AM
    Strange jbb on HarpertownDavid Kanter2009/04/07 11:19 AM
      Strange jbb on HarpertownHenrik S2009/04/07 09:33 PM
        Strange jbb on HarpertownChris2009/04/08 12:54 AM
          Strange jbb on HarpertownHenrik S2009/04/08 02:40 AM
  Nehalem review upVincent Diepeveen2009/04/07 08:34 AM
    Nehalem review upJack2009/04/09 04:51 PM
      Nehalem review upVincent Diepeveen2009/04/10 01:58 AM
        Nehalem review upMichael S2009/04/10 03:45 AM
          Nehalem review upEduardoS2009/04/10 07:01 AM
            Nehalem review upMichael S2009/04/10 07:56 AM
          Nehalem review upEugene Nalimov2009/04/10 09:12 AM
          Choice of C compiler doesn't matter much for Java...Henrik S2009/04/10 10:10 AM
            Choice of C compiler doesn't matter much for Java...EduardoS2009/04/10 02:49 PM
              Choice of C compiler doesn't matter much for Java...Henrik S2009/04/11 07:13 AM
                Choice of C compiler doesn't matter much for Java...EduardoS2009/04/11 11:30 AM
                  Large pagesDavid Kanter2009/04/11 02:02 PM
                  Choice of C compiler doesn't matter much for Java...Henrik S2009/04/11 11:06 PM
                    Choice of C compiler doesn't matter much for Java...Paul2009/04/12 01:53 AM
                      Choice of C compiler doesn't matter much for Java...iz2009/04/12 02:59 AM
                      Choice of C compiler doesn't matter much for Java...Henrik S2009/04/12 07:37 AM
                    Choice of C compiler doesn't matter much for Java...EduardoS2009/04/12 08:08 AM
                      Choice of C compiler doesn't matter much for Java...Henrik S2009/04/12 09:25 AM
                        Choice of C compiler doesn't matter much for Java...EduardoS2009/04/12 05:24 PM
                          Choice of C compiler doesn't matter much for Java...Henrik S2009/04/12 10:18 PM
                            Thread costsDavid Kanter2009/04/13 12:12 AM
                              Thread costsHenrik S2009/04/14 02:08 PM
            Choice of C compiler doesn't matter much for Java...Michael S2009/04/11 08:53 AM
              Choice of C compiler doesn't matter much for Java...Henrik S2009/04/11 11:08 PM
          Nehalem review upVincent Diepeveen2009/04/11 04:50 PM
            Nehalem review upMichael S2009/04/11 05:12 PM
              Nehalem review upVincent Diepeveen2009/04/12 03:01 AM
                Nehalem review upMichael S2009/04/12 05:07 AM
  Nehalem review uprwessel2009/04/07 02:01 PM
    Nehalem review upslacker2009/04/08 09:11 AM
      Energy vs. powerDavid Kanter2009/04/08 10:11 AM
        Energy vs. powerVincent Diepeveen2009/04/10 02:08 AM
          Energy vs. powerslacker2009/04/10 09:26 AM
            Energy vs. powerRagingDragon2009/04/10 10:19 AM
              Energy vs. powerDavid Kanter2009/04/10 11:47 AM
              Energy vs. powerJack2009/04/10 04:44 PM
                Energy vs. powerslacker2009/04/10 07:00 PM
                  Energy vs. powerJack2009/04/10 07:31 PM
                  Energy vs. powerDavid Kanter2009/04/11 12:16 AM
      Nehalem review uprwessel2009/04/08 02:32 PM
  Minor font issuegpriatko2009/04/07 04:35 PM
    Minor HTML issueDavid Kanter2009/04/07 09:38 PM
      Minor HTML issueDavid Kanter2009/04/07 09:39 PM
  Good work, i look forward to linux and SP2 numbers (NT)PiedPiper2009/04/08 01:52 AM
  Nehalem review upJoe Chang2009/04/10 03:59 AM
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