Search found 46 matches

by jeffreyan11
Sat Jul 14, 2018 7:28 pm
Forum: Computer Chess Club: General Topics
Topic: Laser 1.6 Release
Replies: 14
Views: 2303

Laser 1.6 Release

Laser 1.6 has now been released and is available at https://github.com/jeffreyan11/uci-chess-engine/releases/tag/v1.6 Self-play regressions: +151 in 12000 games at 3+0.02 +151 in 12000 games at 15+0.05 Estimated CCRL elo is 3180 Major changes: Search and evaluation tweaks SMP rewrite Time management...
by jeffreyan11
Thu Jan 25, 2018 6:15 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Laser 1.5 64-bit Gauntlet for CCRL 40/40
Replies: 2
Views: 595

Re: Laser 1.5 64-bit Gauntlet for CCRL 40/40

Looks good, thanks as always Graham!
by jeffreyan11
Sat Dec 30, 2017 4:18 am
Forum: Computer Chess Club: General Topics
Topic: Laser 1.5 Release
Replies: 7
Views: 2808

Re: Laser 1.5 Release

That's good news, thanks for testing! [...snip...] Implement pondering: This is a preliminary release of pondering, which may not work with GUIs other than Cutechess. Pondering support will continue to improve in future versions. Pondering works under Shredder Classic and Arena too. And, the first m...
by jeffreyan11
Wed Dec 27, 2017 6:33 am
Forum: Computer Chess Club: General Topics
Topic: Laser 1.5 Release
Replies: 7
Views: 2808

Laser 1.5 Release

Laser 1.5 has now been released and is available at https://github.com/jeffreyan11/uci-chess-engine/releases/tag/v1.5 Self-play regressions: +84 in 8000 games at 3+0.02 +97 in 4000 games at 15+0.05 Estimated CCRL elo is 3110 Major changes: Multiple bugfixes Low depth pruning changes Evaluation tunin...
by jeffreyan11
Fri Nov 17, 2017 3:44 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Running multiple instances of Laser at once
Replies: 11
Views: 1983

Re: Running multiple instances of Laser at once

Yes, that is the guilty commit, although that problem is solved. The 24 process problem is unrelated. Unfortunately, I haven't been able to reproduce the problem on my Threadripper. I tried Laser, Stockfish 8, and Ethereal 8.28, and they all showed similar amounts of slowdown from 1 -> 8 cores (abou...
by jeffreyan11
Thu Nov 16, 2017 6:44 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Running multiple instances of Laser at once
Replies: 11
Views: 1983

Re: Running multiple instances of Laser at once

Andrew: Ah, I see. Sorry for misunderstanding. I'm not sure what the problem is then, but I'll look into it.

Martin: By evaluation tables, I meant attack map tables for the eval that are calculated on the fly, so they're both written and read. But I agree that read-only data shouldn't be a problem.
by jeffreyan11
Wed Nov 15, 2017 1:53 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Running multiple instances of Laser at once
Replies: 11
Views: 1983

Re: Running multiple instances of Laser at once

The lastest master is indeed broken on > 1 core. I can't give an exact time as to when a fixed version will be put onto Github, but hopefully in the next month. In the mean time, if you want the latest working version, take anything from July 22nd or before. Peter Osterlund found the bug for Nemorin...
by jeffreyan11
Fri Nov 03, 2017 1:02 am
Forum: Computer Chess Club: General Topics
Topic: Interesting endgame in TCEC: Nirvana vs. Gaviota
Replies: 2
Views: 673

Re: Interesting endgame in TCEC: Nirvana vs. Gaviota

A tricky one for sure. Laser dev with 1GB, 1 thread, 5-man Syzygy, starting directly from the position in question finds it at depth 30: info depth 1 seldepth 1 score cp -18 time 1 nodes 18 nps 18000 tbhits 0 hashfull 0 pv e7d5 info depth 2 seldepth 3 score cp -18 time 1 nodes 60 nps 60000 tbhits 0 ...
by jeffreyan11
Sun Oct 29, 2017 5:45 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Games of the on-line blitz tourney Oct 2017
Replies: 28
Views: 3572

Re: Games of the on-line blitz tourney Oct 2017

Laser games: [pgn] [Event "ICS rated blitz match"] [Site "winboard.nl"] [Date "2017.10.28"] [Round "-"] [White "Laser"] [Black "Spartacus"] [Result "1-0"] [WhiteElo "1883"] [BlackElo "1562"] [TimeControl "300+1"] [Annotator "1. +0.19 9... -0.28"] 1. d4 {+0.19/20 14} d5 2. Nf3 {+0.14/20 18} Nf6 3. c4...
by jeffreyan11
Fri Sep 29, 2017 1:06 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 66th Amateur Series Division 2
Replies: 14
Views: 1629

Re: Final Standings

Thanks for the tournament Graham! Proud to see Laser make it into Division 1 for the first time :)