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Subject: Re: Crafty vs Crafty ... CPU Speed -> performance

Author: Robert Hyatt

Date: 15:28:33 02/03/01

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On February 03, 2001 at 11:09:47, Jorge Pichard wrote:

>On February 03, 2001 at 10:29:37, Robert Hyatt wrote:
>
>>On February 03, 2001 at 09:20:59, Jorge Pichard wrote:
>>
>>>On February 03, 2001 at 08:19:16, Hristo wrote:
>>>
>>>>Managed to play 10 games with crafty running on 1Ghz Athlon
>>>>and 450MHz PIII computers.
>>>>Crafty 1G  : 1 .5 .5 .5 .5 .5 1 .5 1 1 = 7
>>>>Crafty 450M: 0 .5 .5 .5 .5 .5 0 .5 0 0 = 3
>>>>
>>>>on average crafty pulls 630K NPS on the 1G Athlon and about
>>>>250K on the 450M PIII.
>>>>
>>>>"What does it all mean Bazil?" ;-)
>>>>
>>>>hristo
>>>
>>>Set up the time control to twice as much for the 450 MHz and run another much
>>>and provive the result later. I will bet on the 450 MHz to win the match even if
>>>the NPS is 2.2 more on the 1Ghz than on the 450 MHz. I did a similar test
>>>between my AMD 800 MHz vs my second P.C. K6-2 500 MHz for this test I provide a
>>>time control of 60 minutes per game for the 500 Mhz vs 45 Minutes per game for
>>>the 800 MHz just to match the equivalence of the NPS for both machines and the
>>>result ended in favor of the 500 MHz P.C. by 1 game after 15 games total W6 L5
>>>D4.
>>>
>>>Pichard.
>>
>>
>>Giving the slower machine more time doesn't work.  The faster machine will
>>predict most of the slower machine's moves and it will get to think for a longer
>>time as well.
>
>In order to avoid the faster machine to think while the slower machine is
>thinking, simply provide the slower machine a move per every 60 seconds, and the
>faster machine a move per every 24 seconds. This will allow the slower machine
>to match the NPS produced by the faster machine.
>
>Pichard.


How can you possibly do this when the slower program is going to take a long
while to make its move?  During _all_ that time, Crafty on the faster machine
will continue to think.



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