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Subject: Re: Many Crafty versions, many compile versions, different bench results??

Author: Matt Taylor

Date: 15:33:38 12/08/02

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On December 08, 2002 at 17:10:58, Edward Seid wrote:

>The thing I don't like about using Crafty to compare benchmarks is that everyone
>uses different versions of Crafty.  In addition, for any particular version,
>there's the Eugene Nalimov compile, the Dann Corbit compile, and who knows what
>other compiles, all giving different bench results.  It would be hard to compare
>my machine vs other people's unless we know we're using the exact same version
>and compile.
>
>Perhaps a better choice would be a more established program like Yace 0.99.56
>which has been the same version for over 1 year.  But I don't know if it has a
>bench command.
>
>On December 08, 2002 at 16:31:06, Matt Taylor wrote:
>
>>Sandra is like any other synthetic benchmark: not indicitive of real-world
>>performance.
>>
>>The best benchmark I know of is running an actual chess engine (e.g. Crafty) and
>>reporting nps.

Well, there are two metrics to consider. You can consider a general optimized
version of a chess engine not optimized for a specific processor. You can also
consider specially optimized forms for each processor.

In this case, I think the latter is likely more important since people will want
to optimize a particular chess engine for their system. Determining standard
builds is quite difficult, though. Perhaps that's why nobody has done it. :-)

And yes, any particular chess engine will do. I picked Crafty arbitrarily, but
just about any relatively complex engine will work.

-Matt



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