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Subject: Re: Quad scaling ?

Author: Thomas Logan

Date: 19:51:57 08/24/05

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On August 24, 2005 at 21:52:53, Eelco de Groot wrote:

>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

Ok thanks

I saw the post you refer to

Tom



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