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

Author: Jeremiah Penery

Date: 02:34:22 04/29/00

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On April 29, 2000 at 01:02:29, Robert Hyatt wrote:

>On April 28, 2000 at 23:39:10, Jeremiah Penery wrote:
>
>>On April 28, 2000 at 09:41:29, Chessfun wrote:
>>
>>>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.
>
>
>It is really like a ponder-on match on 2 machines at about 3/4 of the time
>control.  Programs will use 50% of their total time properly.  They will use
>the other 50% of their total time for pondering, but roughly 50% of that will
>be useful, 50% will be lost due to incorrect pondering.
>
>A game in 1 minute ponder=on is probably pretty close to game in 45 seconds,
>ponder=off.

True.  But I was pointing out that this:

2 min/game, ponder=ON, 50% CPU (I.e., using one CPU.)

is approximately the same as this:

1 min/game, ponder=ON, 100% CPU (I.e., using 2 CPUs.)

Jeremiah :)



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