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Subject: Re: Shared Hash Table - How to Test?

Author: Robert Hyatt

Date: 15:24:01 07/22/03

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On July 22, 2003 at 17:27:37, Bob Durrett wrote:

>
>While using Chessbase 8, I use an analysis engine.  Until today, that analysis
>engine has been Fritz 8.  Today I purchased Shredder 7 and ran Chessbase 8 using
>Shredder 7 as the analysis engine.  After allowing the analysis engine to look
>at a position for a few minutes, I copied the Shredder line to the notation and
>then switched to Fritz 8.  The question I have is whether or not the contents of
>the hash table used by Shredder would then be used by Fritz.  The first thought
>would be that switching engines would erase the Shredder hash table(s) and set
>up new empty Fritz hash table(s).  But does it have to be that way?
>
>Is there some simple test a user could perform to determine whether or not the
>two engines would use the same hash table where the contents put in by one
>engine would then be used by the other?
>
>Does this make any sense?
>
>Bob D.


I doubt they "share".  That would require the _same_ random numbers for
the Zobrist hash.  The same scores.  Etc. All of those seem highly improbable.




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