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Subject: Re: Hash table question

Author: Larry Griffiths

Date: 11:10:41 02/19/01

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Ok Carmelo,

I ran Fine70 to a depth of 24 plys.  I used two 8Meg hash Tables, One for Black,
One for White.

00:00:01.984 24 -            1000   Kb1  <----------

00:00:01.984 24 - ########## SEARCH TERMINATED (TIME EXPIRED) ##########

Valid Hash Entries............... 37270
Refereneced Hash Entries......... 13671
BTM Hash Entries................. 25036
WTM Hash Entries................. 12234

Elapsed Time= 1.88 seconds

From my disk log...

41,829 keys matched at ply 24 and 2,046 keys did not match.
so the hit ratio is around 95%.

If I divide 13671 by 37270 then only 36.6 % of the hash entries show being
referenced at the end of the search.

I also get high Add Failure rates at deeper plys because of the depth not being
greater than the hash entry depth in the hash table.

Larry.



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