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Subject: Re: Quad scaling ? (another note)

Author: Robert Hyatt

Date: 12:16:34 08/24/05

Go up one level in this thread


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.

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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