Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Diep fullwidth vs Deep Blue fullwidth

Author: Robert Hyatt

Date: 11:53:16 12/23/99

Go up one level in this thread


On December 23, 1999 at 14:43:33, José de Jesús García Ruvalcaba wrote:

>On December 22, 1999 at 18:37:16, Robert Hyatt wrote:
>
>>On December 22, 1999 at 17:38:27, José de Jesús García Ruvalcaba wrote:
>>
>>>On December 21, 1999 at 17:44:06, Robert Hyatt wrote:
>>>
>>>[big snip]
>>>>
>>>>Also, chess is _far_ from "embarassingly parallel".  It is one of the more
>>>>difficult-to-program parallel algorithms, because alpha/beta is a strictly
>>>>defined sequential algorithm.  Doing it in parallel invites a lot of extra
>>>>work that can't be avoided.
>>>>
>>>[big snip]
>>>
>>>	I was just about to begin a new thread asking "is there a quick and dirty way
>>>of parallelizing a chess search?". By your post I guess that the answer is "no".
>>>José.
>>
>>
>>There are "quick and dirty" ways to do it. But they don't produce what would be
>>called stellar performance...
>>
>>unfortunately... :)
>
>	Where can I find about those 'quick and dirty' ways? Poor performance was to be
>expected, of course.
>José.


The simplest idea is "young brothers wait" which has been around in various
forms since 1980.  It is still non-trivial to handle the locking and potential
race conditions...  but it is not terribily difficult to get up and going.



This page took 0.01 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.