Author: Albert Silver
Date: 06:03:38 08/30/04
Go up one level in this thread
On August 30, 2004 at 08:30:34, Kurt Utzinger wrote:
>On August 30, 2004 at 08:12:52, Jouni Uski wrote:
>
>>Eine FPGA-Karte untersucht momentan ca. 3 Millionen Positionen/Sekunde. 16
>>Karten machen daher theoretisch 48 MPos/sec. (Donninger)
>>
>>Jouni
>
> If Hydra made 48 Mpos/sec this again proves (in comparison
> with the 2 Mpos/sec on Quad-Opteron server with 4 CPU's of
> Shredder) that the number of pos/sec can't be taken as a
> reliable value for the goodness of a chess program. It's
> of course simply impossible to compare apples and organes.
> Kurt [http://www.utzingerk.com]
It would be necessary to have more games played to really judge the relative
strengths of the machines (software + hardware), but supposing the gain is 40
Elo per ply at this point (diminishing returns) and that Hydra is gaining one
ply per 3-fold speedup that would mean it is roughly 120-150 Elo stronger than
Shredder on that hardware. The only problem with judging this is the fact that
I'd expect some loss with the scaling, and the number Jouni just gave is a
simple 16 x 3, and of course Shredder having left the book lost in the first 2
games. All in all, much too little information. Still, Hydra did win with a
convincing score (5.5 - 2.5) which argues in its favor, even if there were too
few games. Let's not forget the famous Bahrain qualifier when Junior started by
beating Fritz 5-0 in the first 5 games, which would have led to a similar
lopsided score if the match had only been 8 games long, but ultimately lost the
40 game match.
Albert
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