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Subject: Re: Robert, a little question ...

Author: Mogens Larsen

Date: 08:52:17 09/20/00

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On September 20, 2000 at 08:52:03, Robert Hyatt wrote:

>Jonathan Schaeffer tried this a good while back with his distributed version
>of Phoenix.

Has he published anything on the net about this subject?

>The problem is, suppose your "positional" search says play "X"
>while the tactical search says "X loses"?

I guess that would depend on the actual evaluation. Maybe in very rough terms
something like: if the tactical evaluation is very poor then go with positional,
unless the number of pieces on the board favours a tactical approach or the
position isn't at least semiclosed. Maybe a cpu for comparative evaluation would
be ideal as well :o). You've got four. What should the last one do? :o))

>It is not easy to coordinate a pair
>of search results like this.  And remember both would be searching the same
>part of the tree, twice.

That wouldn't be a major problem IMO as the actual result would still
(hopefully) be superior to the single cpu approach. The SMP approach is just a
remedy to the lack of single cpu clock speed as far as I can tell, not an
advanced computer chess concept. Am I wrong about that?

>a standard SMP approach is way more efficient...  and also easier to understand
>when you try to address the above problem.

I think it's too simple an approach, but I know too little about it to put
weight behind that opinion. Is there any available papers for technical morons
about SMP?

Best wishes...
Mogens



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