Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Problem with TT

Author: Ricardo Gibert

Date: 14:50:21 07/11/03

Go up one level in this thread


On July 11, 2003 at 17:23:10, Tom Likens wrote:

[snip]

>I probably haven't solved your problem but of course these things
>are insidious.  Also I could easily be misinterpreting some of
>your code, if so I apologize.
>
>Some general advice, you probably should convert to 64-bit hash
>keys to reduce the chance of collisions.


Actually, every program should allow this to be configurable. For instance, an
8-bit hash can be useful in debugging and a 32-bit hash is something interesting
and not known for certain to be a bad idea.


>
>If you don't already have it I would write a routine that generates
>the hash key for the current position from scratch.  It should always
>match your current dynamic hash key.  If you make it a debug
>option, enabled either when you compile or at the command line,
>then you will be able to utilize it in the future when other
>nasty hashing bugs make their appearance.
>
>good luck,
>--tom



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.