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Subject: Re: FPGAs playing chess--an expert opinion

Author: Greg Lindahl

Date: 21:32:58 12/20/99

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On December 20, 1999 at 21:37:43, Robert Hyatt wrote:

>Crafty's eval is 50% of the total time.  Nobody is over 90% of total time in
>eval.

You are correct about Crafty. You are wrong about "nobody".

> The problem that
>you may be overlooking is this:  Suppose a very fast program (fritz) searches
>300K nodes per second with almost no eval.  Your hardware won't help much.
>Suppose another program searches at 30K with 90% of the time spent in eval.
>You speed that program up to almost 300K.  That isn't enough to make a huge
>difference, particularly when someone can compile on other platforms (like
>the 21264) and get a big boost there as well...

First off, I almost exclusively use the 21264 already, which you remember
because you've been carefully reading what I write. Second off, you seem to be
assuming that searching N nodes is the same as searching N nodes. But you know
that's wrong -- quality makes a difference.

-- g



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