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November Knockout
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Lucas Braesch



Joined: 31 May 2010
Posts: 2918

PostPost subject: Re: November Knockout    Posted: Sat Nov 11, 2017 8:36 am Reply to topic Reply with quote

Graham Banks wrote:

256mb hash each where possible
40 moves in 25 minutes repeating (adapted for the CCRL)

I think I finally understand why Demolito underperforms dramatically in CCRL 40/40 compared to 40/4. It's probably not a problem of search or eval scalability, but simply of hash pressure. Having the most basic hash replacement scheme is very bad in CCRL 40/40 condition, because the hash pressure there is enormous (ie. 256mb is very small for such a long time control). In turn magnifies the effect of hash replacement, disadvantaging Demolito (whose hash replacement sucks).

I've already improved my hash replacement, and it has shown significant gain at testing conditions that aim to reproduce the CCRL 40/40 hash pressure. Hopefully the next version won't get beaten by Rodent anymore...
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Display posts from previous:   
Subject Author Date/Time
November Knockout Graham Banks Wed Nov 08, 2017 8:02 pm
      Broadcast Details Graham Banks Wed Nov 08, 2017 8:04 pm
            Round 1 Matches Graham Banks Wed Nov 08, 2017 8:05 pm
                  Re: Round 1 Matches Graham Banks Thu Nov 09, 2017 9:09 pm
                  Re: Round 1 Matches Graham Banks Fri Nov 10, 2017 8:23 pm
                  Re: Round 1 Matches Graham Banks Fri Nov 10, 2017 8:24 pm
                  Re: Round 1 Matches Graham Banks Sat Nov 11, 2017 6:44 am
                  Re: Round 1 Matches Graham Banks Sat Nov 11, 2017 7:51 pm
                  Re: Round 1 Matches Graham Banks Sun Nov 12, 2017 7:55 am
                  Re: Round 1 Matches Graham Banks Mon Nov 13, 2017 4:01 am
                  Re: Round 1 Matches Graham Banks Mon Nov 13, 2017 7:17 pm
                        Quarter-Final Matches Graham Banks Mon Nov 13, 2017 7:50 pm
                              Re: Quarter-Final Matches Graham Banks Tue Nov 14, 2017 8:48 pm
                              Re: Quarter-Final Matches Graham Banks Wed Nov 15, 2017 7:49 am
                              Re: Quarter-Final Matches Graham Banks Thu Nov 16, 2017 3:14 am
                              Re: Quarter-Final Matches Graham Banks Thu Nov 16, 2017 7:57 pm
                                    Semi-Final Matches Graham Banks Thu Nov 16, 2017 8:01 pm
                                          Re: Semi-Final Matches Graham Banks Fri Nov 17, 2017 8:24 am
                                          Re: Semi-Final Matches Graham Banks Sat Nov 18, 2017 1:00 am
                                                The Grand Final Graham Banks Sat Nov 18, 2017 1:01 am
                                                      Re: The Grand Final Graham Banks Mon Nov 20, 2017 9:13 am
                                                            Re: The Grand Final Graham Banks Tue Dec 05, 2017 8:31 pm
      Re: November Knockout Lucas Braesch Thu Nov 09, 2017 4:00 am
            Re: November Knockout Graham Banks Thu Nov 09, 2017 4:51 am
      Re: November Knockout Lucas Braesch Sat Nov 11, 2017 8:36 am
Post new topic    TalkChess.com Forum Index -> Computer Chess Club: Tournaments and Matches

 
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