Re: For Mac OS X users [Was Re: [Bug-gnubg] gnubg on mac os x]

[Olivier Baur]

Le mercredi, 9 avr 2003, à 10:09 Europe/Paris, Øystein O Johansen a 
écrit :

> Fantastic!
> How is the speed? How many static evaluations can you get each sec?
> (Analyse->Evaluation Speed->Calibrate)
> I get about 17000 on my 2 GHz Intel XEON, and about 23000 on my 2.53 
> GHz P4
>
> -Øystein

On my PowerBook G4 768 MHz (no L3 cache :-)), I get about 9000 static 
evals/sec. Quite poor compared to the numbers you give. I'm waiting for 
someone to test it on a desktop G4 :-)

But I know I can get an increase to about 11000-12000 evals/sec by 
"tweaking" some code (actually rewriting the eval algorithm to 
superscalar with the G4's Velocity Engine) -- this was a quick try, not 
released for now. My G4 code perf analyser also tells me there are many 
things to correct about float usage in the eval, sigmoid and 
calculateinputs functions -- things that dramatically matter on G4 
performance.

Best,

Olivier Baur