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Subject: Re: Coppermine results

Author: Peter Stahlhacke

Date: 06:34:46 12/13/99

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On December 13, 1999 at 04:36:26, Gunnar Andersson wrote:

>I'm the creator of the engine in the Othello program WZebra and I'm curious
>about how you obtained the figure 35%. Did you actually test it on a Coppermine
>processor?
>
>I did some back-of the envelope estimates recently and came up with 0% in the
>midgame and 5% in the endgame without any changes to the code, probably up to
>10%, at least in the midgame, if the Coppermine provides lots of registers (> 32
>would be nice). (I'm a bit confused here, is the Coppermine the same thing as
>the Merced/Itanium?)
>
>/ Gunnar


Hupps! Gunnar you are right!

I again put my old PIII-558 into Slot1 and found out that i get 445 kN/s
(instead of 345) in the middelgame. (Wzebra2.0)
In the same position i get 695kN/s with my PIII838.5E (oc 650),
--> speedup 4%

I also checked the other results from the chessprogs, and they seem to be ok.

Peter









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