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Subject: Re: Junior - Crafty NPS Challenge - a user experiment

Author: Robert Hyatt

Date: 15:24:42 11/21/03

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On November 21, 2003 at 18:05:55, Joachim Rang wrote:

>On November 21, 2003 at 16:47:52, Peter Berger wrote:
>
>>Following recent heated discussions I'd love to do a little testmatch. There are
>>different versions of the challenge online - I chose one that I can kind of
>>simulate myself with slower hardware.
>>
>>Junior 8.0.0.2 will play on a P233MMX, 32 MB RAM.
>>Crafty 19.4 will play on a PIV2.0GHz notebook, 1GHz RAM.
>>
>>Time control will be game in 2 hours with 10 seconds increment/move. The match
>>will be done like older FIDE world championship matches - the first one to win 6
>>games wins the match, draws won't count.
>>
>>Junior uses 16MB Hash, 3+4 men tablebases, 1MB cache, junior8.ctg.
>>Crafty uses 384MB Hash, 64MB hashp, 3+4 men tablebases, 32MB cache, own book,
>>aware of playing a computer.
>>
>>Compairing setups with Crafty bench (hash 12M, hashp 3M, cache 1M on the slower
>>one) suggests a speed difference factor of about 10.5 in raw nodes per seconds
>>and 11.0 in "SMP time to-ply-measurement" between the two computers.
>>As the Junior Mark doesn't work on the slower one and Junior chooses to search
>>different depths on both in the starting position, I can't really give a number.
>>The difference seems to be slightly lower for Junior though, sth like 9.0 maybe.
>>
>>Saying that the faster computer is about 10 times faster shouldn't be too wrong.
>>
>>That's also clearly an upper-bound for faster hardware Crafty could reasonably
>>come up to compete with against a single-CPU opponent in a current competition
>>on fast computers IMHO - the speedup demands 16 CPUs I guess, and I don't know
>>if Crafty can really scale that well.
>>
>>With this setup Crafty should be the clear favourite I suppose.
>>
>>Crafty won the toss and will have the white pieces in the first game.
>>
>>Peter
>
>
>nice test indeed. I think crafty will win.
>
>regards Joachim

If it loses I should obviously retire from computer chess due to gross
incompetence.  It will fortell of things to come with 100X time odds,
although I am sure some will expect to lose even it it wins with 10x.



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