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Subject: Re: Quad scaling ? (another note)

Author: Vincent Diepeveen

Date: 07:34:35 08/25/05

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On August 24, 2005 at 15:16:34, Robert Hyatt 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?
>
>Don't see why.  I get somewhere around 3.0 on a quad.  I'm getting reasonably
>close to 6 on the 8-way box.  Will have lots of numbers to post later once all
>the runs finish.

Bob perhaps not mix scaling and speedup, they are 2 different things.

>But no reason 3.3 on 4 translates to 4.0 on 8.  That is hardly a straight-line
>fit of anything.
>
>
>>
>>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.
>>
>>>Thanks again
>>>
>>>Tom



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