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Subject: Re: Brutus KN / S???

Author: Robert Hyatt

Date: 06:33:29 11/25/03

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On November 25, 2003 at 01:23:27, Dann Corbit wrote:

>On November 25, 2003 at 00:17:00, Derek Paquette wrote:
>
>>What KN/S is Brutus getting anyone know?
>>Or how far is it searching, or how thorough etc?
>
>From:
>http://www.talkchess.com/forums/1/message.html?330084
>8 PC cluster, with hardware acceleration.
>2.5 million NPS per card * 8 cards = 20M NPS (less threading loss, which is
>probably considerable).
>
>Might be twice that if there are two cards per machine (it isn't clear to me).

There are 4 pcs, two cards per PC.  I think he is claiming roughly 6.7X
in NPS efficiency (rather than the optimal 8x).  Of course, the parallel
search reduces that significantly...  Still, even if it is 5x faster than
one, that is significant.



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