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Subject: Re: Rybka nps - 30knps

Author: Dann Corbit

Date: 18:58:39 02/06/06

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On February 06, 2006 at 21:47:09, Ryan B. wrote:

>On February 06, 2006 at 17:20:00, Alvaro Jose Povoa Cardoso wrote:
>
>>Some time ago I saw someone reporting (don't remember if it was here) Rybka
>>doing 30Knps, while crafy 19.x doing 800Knps and Fritz8 doing over a million nps
>>on his pc while beating both crafty and fritz.
>>
>>Over the years computer programmers said that nps was an importante factor in an
>>engine performance, (and I agree, look at Deep Blue and Hydra).
>>In face of Rybka nps, my question is:
>>What the hell is going on?
>>In this department Rybka seams to prove that nps isn't a factor for performance
>>at all.
>>
>>Please state you opinion on this.
>>
>>best regards,
>>Alvaro Cardoso
>
>Rather it is to hide extra hidden search or for marketing propaganda I do not
>know but I do know Rybka manipulates its node count.

By what means do you know this?

>What is really important
>is the tactical strength of Rybka not the NPS.  It will be interesting to see
>what other engines have similar success after going back to try “old” ideas.
>Also not that Rybka is bad in endgames, I think it is rather good, but it will
>be interesting to see how Vas handles the endgame issues in Rybka.  It does not
>seem that it will be as simple as just adding endgame knowledge.
>
>
>Ryan



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