Search found 839 matches

by AndrewGrant
Sat Aug 11, 2018 1:47 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: "go ponder"/"ponderhit" issue in UCI
Replies: 13
Views: 3337

Re: "go ponder"/"ponderhit" issue in UCI

Using cutechess-cli in UCI mode with pondering on, I see quite a few instances in the debug log where "go ponder" is immediately followed by a "ponderhit" command, with no intervening commands from cutechess or either engine. As I understand it, this is really equivalent to a foreground (non-ponder...
by AndrewGrant
Wed Aug 08, 2018 8:09 pm
Forum: Computer Chess Club: General Topics
Topic: Weini questions
Replies: 22
Views: 3114

Re: Weini questions

Yes
by AndrewGrant
Wed Aug 08, 2018 4:51 pm
Forum: Computer Chess Club: General Topics
Topic: Weini questions
Replies: 22
Views: 3114

Re: Weini questions

Yes oops, it isn't clear at all indeed. All TT size work as follows : - the TT size is the number of bucket in the TT, not the Mb used. - the TT size given is always rounded to the previous power of 2 If you run Weini in the command line without any argument, you'll get more detail on memory really...
by AndrewGrant
Wed Aug 08, 2018 5:23 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Lazy SMP and 44 cores
Replies: 21
Views: 7076

Re: Lazy SMP and 44 cores

One thing you could try is letting each thread do it's own iterative deepening starting from varying depths. Should cause a nice spread with a nice mix of aspiration windows. Although I wouldn't try to predict how it measures up against the usual +0,+1 depth method. Just an idea I think this is the...
by AndrewGrant
Wed Aug 08, 2018 1:54 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Lazy SMP and 44 cores
Replies: 21
Views: 7076

Re: Lazy SMP and 44 cores

By system, I was reffering to your current method of picking the thread for each depth.

As for setting loose ... Some people will restart each thread whenever the main thread finishes (awful idea). In that case, a different scheme is probably best.
by AndrewGrant
Tue Aug 07, 2018 6:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Lazy SMP and 44 cores
Replies: 21
Views: 7076

Re: Lazy SMP and 44 cores

Assuming you let the threads loose, and don't force 50% to always be mainDepth + 1, then this system would probably work out pretty well for 43 cores. I do the following, which is inspired from Demolito. It basically says if 50% of the threads are working on an equal or higher depth, then I should t...
by AndrewGrant
Tue Aug 07, 2018 4:48 pm
Forum: Computer Chess Club: General Topics
Topic: Ivanhoe plays singlecore in TCEC 13 !!
Replies: 73
Views: 16535

Re: Ivanhoe plays singlecore in TCEC 13 !!

In the past when Martin was still in charge of TCEC each engine was thoroughly checked before it was entered in the tournament. Now it seems more like playing Pacman. TCEC will lose a lot of credibility with all these nonsense. TCEC tournament director is totally incompetent. Was already the case w...
by AndrewGrant
Thu Aug 02, 2018 9:28 pm
Forum: Computer Chess Club: General Topics
Topic: TCEC season 13, 2 NN engines will be participating, Leela and Deus X
Replies: 182
Views: 42092

Re: TCEC season 13, 2 NN engines will be participating, Leela and Deus X

5. You did not write a chess engine. Why didn't you ask TCEC admins to correct the title "Deus X – the NN chess engine by Albert Silver" of this announcement: http://www.chessdom.com/deus-x-the-nn-c ... rt-silver/ and a similar sentence in the article itself? Interestingly, this has been corrected ...
by AndrewGrant
Wed Aug 01, 2018 7:14 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Strings of timelosses under cutechess-cli
Replies: 4
Views: 1147

Re: Strings of timelosses under cutechess-cli

It was suggested that the machine over heats, and due to a kernal bug, instead of downclocking each thread, the cpu instead idles them. This would cause engines to time loss, despite never crashing. It seems like a reasonable idea, so I've upgrade the kernal and opened up the chassis to increase air...
by AndrewGrant
Wed Aug 01, 2018 4:53 pm
Forum: Computer Chess Club: General Topics
Topic: TCEC season 13, 2 NN engines will be participating, Leela and Deus X
Replies: 182
Views: 42092

Re: TCEC season 13, 2 NN engines will be participating, Leela and Deus X

Note that the things I have posted here are simply speculative. Although I am involved in the TCEC games, I am not actually in-the-know about the inner-workings of Anton, TCEC, and others. It has been pointed out to me that some take my writings to be insulting. This is not my intend, and in fact, f...