Author: Vincent Diepeveen
Date: 07:39:26 08/25/05
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On August 24, 2005 at 21:52:53, Eelco de Groot wrote: Hi, I'm happy you read very correct what i wrote down :) Please note that for tiny amount of cpu's (2-8) the speedup in diep when not forward pruning (other than nullmove) is very close to the scaling. >On August 24, 2005 at 14:50:46, Thomas Logan wrote: > >>On August 24, 2005 at 12:05:09, Vincent Diepeveen wrote: >> >>>On August 24, 2005 at 08:59:28, Thomas Logan wrote: >>> >>>>On August 24, 2005 at 08:47:33, Vincent Diepeveen wrote: >>>> >>>>>On August 24, 2005 at 08:20:25, Thomas Logan wrote: >>>>> >>>>>>Does anyone have scaling figures for various deep programs >>>>>> >>>>>>and systems with 2 dual core processors >>>>>> >>>>>>Tom >>>>> >>>>>hi, i just started a test at my k7 single cpu machine >>>>>to compare an output created at a quad dual core 1.8Ghz. >>>>> >>>>>The test is over 213 positiosn and statistical significant. >>>>> >>>>>I expect results within 2 weeks. >>>>> >>>>>You can calculate what time it takes 70 minutes * 213 positions. >>>>> >>>>>one thing already seems sure: >>>>> >>>>>x86-64 has no scaling problems with big hashtables, x86 has. >>>>> >>>>>Vincent >>>> >>>>Hello Vincent >>>> >>>>Thank you >>>> >>>>Are you using Diep ? >>>> >>>>Any knowledge concerning Fritz, Junior or Shredder >>>>Please post your results when obtained >>> >>>Shredder is scaling 3.3 at quad single core, so that'll be like scaling of 4 at >>>dual core quad or so? >>> >>>junior was single core and fritz will not be scaling well either (deepfritz8). >>> >>>We know all this already from 8 cpu Xeon machines in fact. See results donninger >>>posted once. >>> >>>If you don't run well at 8 cpu xeon then forget dual core. >>> >>So you believe Shreder scale fairly well on a quad >> >>But regarding Junior and Fritz I of course meant the deep versions of Junior and >>Fritz >> >>Any knowledge on these ? >> >>Thanks >> >>Tom > >Hello Thomas, > >I think what Vincent meant was that Junior played on a single core 4 processor >machine on the WCCC. Deep Junior, or it could not have used more than one >processor, but actually I have not read anywhere what kind of processor Amir and >Shay used, AMD or Intel? > >If I understand correctly, scaling involves the NPS numbers,which is not the >same as plydepths/timeunit, the actual speed-up? > >Kevin Burcham posted some interesting numbers for Deep Fritz above >http://www.talkchess.com/forums/1/message.html?444985 > >If you convert that back to nodes per core per MHz that would roughly get the >Fritz scaling numbers. >Groeten, >Eelco
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