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Subject: Re: Cray Blitz

Author: Dann Corbit

Date: 00:56:58 08/02/01

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On August 02, 2001 at 03:32:12, Joshua Lee wrote:

>Since Deep Blue isn't around playing games these days the only "Real"
>Competition That is on the level of DeepThought or Blue would be Cray Blitz.
>How does CB compare to the Deep's? I know DT could be searching 10Ply find a
>move but a regular Fritz might take 20+ ply I am guessing that CB is closer to
>the Deep's than your average program ...  What kind of differences between Cray
>and Commercials are there in eval "IF"  that's a BIG "IF" eval is the main
>difference between the two. How much memory went to Hash Tables etc? Is the
>Depth = to Crafty only just deeper in searches? In other words is 12ply for CB
>the same as Crafty? I played a game Between Fritz and Crafty at 12ply each and
>then 12ply for Crafty and 14 for Fritz , Fritz lost both  not that this says
>much as Fritz at 12 ply took tops 1:30 while Crafty took up to 30 minutes but at
>14 Ply for Fritz it was not enough in the endgame. I don't know how much Depth
>is good for fritz but it looks like 12Ply is a decent minimum for Crafty for
>most positions except in the endgame.
>
>Also i asked about the games of Crafty Vs Cray Blitz when will these be
>available?

Cray blitz had memory bandwidth as a big advantage.  But personally, I think the
8 way SMP boxes running Junior or Fritz would give cray blitz all it could
handle.

On the other hand, put crafty on a 64 way SMP Compaq Alpha machine, and only
Deep Blue would have a chance against it.

Pure speculation, of course.




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