Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: A couple of Questions re ABDADA

Author: Tom Kerrigan

Date: 00:38:33 05/30/00

Go up one level in this thread


On May 30, 2000 at 03:27:30, Steve Maughan wrote:

>Tom,
>
>That is helpful - thanks!
>
>One more question;  I assume that you really need to extract the PV from the
>hash table as any one thread will only have searched a fraction of the PV's

I've worried about this slightly but it doesn't seem to be a big deal. All of
the threads seem to end up with a useful PV somehow (in my program, anyway).

>tree?  Also, suppose that you interrupt the search and force a move - which
>thread would you use, since even at the root the threads could have different
>alpha values and best moves.  I assume that this would mean that it is even more
>desirable to let all the threads complete a given search ply before playing a
>move.

My threads all seem to finish a search within a second of each other (and
usually much less), even if it's a really long search. I think this is a
property of the algorithm; if one thread is still searching, the other threads
should be helping it. Unless there's some sort of hash table weirdness...

-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.