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Subject: Re: Go Brutus!!

Author: Robert Hyatt

Date: 13:14:12 11/24/03

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On November 24, 2003 at 15:05:53, Pete Rihaczek wrote:

>I for one am very excited to see Brutus in the lead. This is an exciting advance
>in chess computing and FPGA computing in general. With the ability to add
>knowledge without the usual penalty, some version of this is the odds-on
>favorite to be the world's strongest chess machine. Such a system was a logical
>step after Deep Blue II had shown the advantages of computing in hardware. Can a
>Kasparov-Brutus match be far away? Well done Dr. Donninger!


I don't think it is _that_ revolutionary.  IE a single FPGA board and
computer together search about 2.5M nodes per second, according to comments
by them when we have played a few skittles games on ICC.  A dual-CPU opteron
is faster than that, as a reference point.

yes, I know that he is running with four machines, two FPGA cards per machine
in Graz.  But then again, 8-way opterons are around as well.  I'm hardly
"anti-hardware" but the benefits to using hardware normally far-surpass
readily available general-purpose computers.  IE belle did 160K when the
fastest competitor was 20K (Cray Blitz).  Deep thought went to 1.5M when we
were at 200K with the fastest hardware Cray had at the time.  The FPGA
approach doesn't have that significant speed advantage.  IE a single card
at 2.5 M nodes per second is within reach of a single processor machine
today...



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