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Subject: Re: DPerft trends

Author: Albert Bertilsson

Date: 22:10:29 12/15/03

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On December 15, 2003 at 17:17:46, scott farrell wrote:

>On December 15, 2003 at 15:37:01, Albert Bertilsson wrote:
>
>>Hi great counters!
>>
>>Today the project progressed some 20%, dispite being in the toughest phase, from
>>now on I guess it is downhill! Hopefully the project will be completed in two
>>days.
>>
>>Of yesterdays new participants sfarrel (Scott Farell) proved to be a rocket,
>>already has he completed close to 200 problems.
>
>:) clearly a few PCs doing this
>
>I was thinking you can probably predict which are 'big ones' and which are
>'small ones'.
>
>Probably the number of pieces on the board, or how close to mate or something.
>Or even a perft3 or perft4 calc might give an indicator. And you might be able
>to break these positions out again, instead of say giving a 'big one' out as
>perft8, break it down one more move, and give it out as perft7 from the server.
>
>just an idea

Actually I consider perft(8) to be to small in general but perft(9) is to big in
general so large problems is not a problem. The top list is ordered by nodes so
getting a large problem is only good for the participant. The only problem is
when a very slow client get a large problem and then turn of the machine, this
causes wasted work, but must clients seem work rather consistently.

/Regards Albert
>
>Scott
>
>>
>>A warm welcome to those who are new and as a note to Benny, you do know how to
>>pick your problems (just completed monster problem that took a freaky 15 hours!)
>>
>>As the project have more participants it is getting a very nice pace, not as
>>dependent on a few particular members any more. Of course even more participants
>>would be nice, to really have a go at perft(12) over the Christmas holiday.
>>
>>So tell your friends to follow this link:
>>http://www.albert.nu/programs/dperft
>>
>>Regards Albert



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