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Subject: Re: Crafty 17-10 v Fritz 6a ponder=on Single cpu

Author: Jeremiah Penery

Date: 20:39:10 04/28/00

Go up one level in this thread


On April 28, 2000 at 09:41:29, Chessfun wrote:

>On April 28, 2000 at 09:21:59, Enrique Irazoqui wrote:
>
>>On April 28, 2000 at 08:59:27, Chessfun wrote:
>>
>>>
>>>All games on one Cel 433.
>>>Ponder=on.
>>>Tablebases used at 25 and longer.
>>>Nunn 1 positions.
>>>No opening books are loaded.
>>>
>>> 1 min game    Fritz 6a 10.0 - 10.0 Crafty 17-10
>>> 2 min game    Fritz 6a 12.0 -  8.0 Crafty 17-10
>>> 3 min game    Fritz 6a 16.5 -  3.5 Crafty 17-10
>>> 5 min game    Fritz 6a 16.0 -  4.0 Crafty 17-10
>>>10 min game    Fritz 6a      -      Crafty 17-10 running
>>>25 min game    Fritz 6a  7.0 -  6.0 Crafty 17-10 Current score
>>>60 min game    Fritz 6a      -      Crafty 17-10 Unplayed
>>>Tourney times  Fritz 6a      -      Crafty 17-10 Unplayed
>>>
>>>These results seem to be all over.
>>
>>Since you are using one machine and ponder on, each engine gets 50% of CPU time
>>and therefore you should compare these results with the ponder off results at
>>half the time. 2 minutes game ponder on compared to 1 minute game ponder off,
>>etc.

No. Pondering doesn't just affect the time so linearly.  There are a lot of
factors.

>>There is still the question of the CPU time being allocated properly. I wonder
>>if we are proving anything like this.
>
>
>I think ponder=on on one cpu just don't work.
>IMHO that is :-)

As long as both programs are getting 50% of the CPU, it's (roughly) the same as
a ponder-on match on 2 machines at half the time control.



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