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

Author: Vincent Diepeveen

Date: 18:50:32 12/17/99

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On December 16, 1999 at 16:13:25, Tom Kerrigan wrote:

>On December 16, 1999 at 15:19:01, Greg Lindahl wrote:
>>Don't get caught up in the straw-man argument here -- there's no reason that
>>someone using FPGAs would not put functions on the FPGA more suitable for FPGAs.
>
>I'm only a 3rd year EE student, but I just don't see how you could do that.
>
>>Things have changed since DB: processors are faster, the busses have higher
>>bandwidth and lower latency (DB was MCA, yes?), the interconnect I use is only
>>as fast as DB's IBM SP (albeit with lower latency). These factors all mean that
>>a different design is likely.
>
>The general-purpose computer played a relatively insignificant role in Deep
>Blue. It doesn't really matter if processors are faster or busses have higher
>bandwidth. It's the chips that search 200M nodes per second with an incredibly
>complex evaluation function.

incredible complex for a not-rated player. incredible simple for
a player like me.

They only claim to have an evaluation bigger than the PUBLISHED evaluations
so far. Apart from gnuchess and crafty i don't know much about 'published'
evaluations. The 40,000 general purpose instructions which makes up
their complete evaluation function in deep blue sure ain't much to
my standards. Saying your evaluation usual eating less than 40,000
GPI is a complete different statement as saying your evaluation function
is totally comparing with 40k GPI.

Apart from this discussion great discussion about FPGA. You're however
comparing with deep blue. I'm only interested in how much faster my program
can get if i for example put my evaluation to FPGA.

What i'm doing in my evaluation is of course first adjust a bunch of
variables and make lists with information to be processed later.

Is this possible in FPGA, or does this require something that's hard
to do in FPGA?

Vincent

>-Tom



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