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Subject: Re: Permanent Brain ON vs Permanent Brain OFF

Author: Miguel A. Ballicora

Date: 08:18:08 07/27/01

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On July 26, 2001 at 14:41:54, Robert Hyatt wrote:

>On July 26, 2001 at 12:55:06, Miguel A. Ballicora wrote:
>
>>On July 26, 2001 at 10:43:45, Robert Hyatt wrote:
>>
>>>On July 26, 2001 at 09:56:24, Matthias Gemuh wrote:
>>>
>>>>
>>>>Hi Robert,
>>>>
>>>>I think you just wanted to make a joke. We all know that PONDER OFF hurts nobody
>>>>(Fritz used its full time). PONDER ON on one CPU is very appropriate to arrive
>>>>at wrong engine comparasons.
>>>>
>>>>Regards,
>>>>Matthias.
>>>
>>>
>>>Nope... no joke at all.  Two programs, one machine, my preference is ponder=on.
>>>both will get 1/2 of the machine and the time controls won't be screwed up.
>>>
>>>ponder=off exposes the opportunity for a program to get into time trouble
>>>because it assumes it will save time with ponder=on when it really can't since
>>>it is disabled...
>>
>>Why the program should assume that it will save time in with ponder=on when
>>it knows that it is off already?
>>Shouldn't a program take this into account?
>>If ponder=off is an option for the program, it should notice the difference
>>and act accordingly IMHO.
>>
>>Regards,
>
>
>because in my case, 99.9% of all games played have ponder=on.  I only disable
>pondering to debug so that I can reproduce the same searches over and over
>when necessary.  Since almost all real games are played with ponder=on, I don't
>have a special time-allocation formula for ponder=on and another one for
>ponder=off.  I just have one that _assumes_ ponder=on.
>
>I see no reason to waste what little time I have working on something that is
>hardly going to be used...

Well, it is used a lot actually by lots of people already. Most of the people
are running matches with ponder=off for some reasons.
If both engines were tuned for ponder=off, it will be the best condition to
optimze the resources since time used pondering is never as good a time used
thinking. For instance, you have a competitive mindset in your answer but if my
purpose is to run a match between engines to learn a particulat opening, I want
my resources to be used as efficient as possible. That is ponder=off for both.
Maybe you could consider making Crafty to be able to process "ponder=off"
accordingly because there will be users that would benefit from it.

Regards,
Miguel




>
>
>
>
>
>>Miguel
>>
>>>
>>>ponder=on is the right way to test _everything_ IMHO, unless you have so little
>>>memory that both programs won't fit at the same time.



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