Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Pawn Transposition Table

Author: Stuart Cracraft

Date: 09:54:42 01/13/98

Go up one level in this thread


On January 12, 1998 at 13:48:02, Robert Hyatt wrote:

>Here's a good sanity check.  I ran win at chess #141 for 45 seconds.
>I hashed 99% of the pawn scores.  The raw numbers were 4,341,832 probes
>attempted, 4,327,288 probes successful.  IE Crafty only evaluated some
>15,000 pawn positions out of 4.3 million calls to evaluate pawns.  This
>number was similar for every position in WAC (plus others) that I
>tested.
>
>note your hash (pawns) has to be large enough to hold everything,
>otherwise
>it is not as effective.

Solution of WAC #141 was slow for me. It took 700+ seconds on a Pentium
133mhz.
The pawn tranposition table hashed 98% of the scores.

I know there's been some discussion about #141 before. What kinds of
improvements help solve this problem? I'm hesitant to go making a lot
of changes for one problem unless someone says they've helped in other
areas and are willing to describe them.

--Stuart



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.