Arasan 24.2

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

jdart
Posts: 4368
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 24.2

Post by jdart »

FYI if you are experiencing issues, adding "-t" to the Arasan command line will produce additional debug info, which can be helpful in diagnosis.

> in Cutechess it doesn't work
what's the issue? When I run in UCI mode under cutechess-cli, I see learning activity in the logs, such as:
395957 <Arasan-24.2.1(1): info string learning position, fen = r4rk1/pp1nqppp/2pp4/4p3/1PP1P3/P1NPPQ1P/6P1/R4RK1 w - - score = +0.32 depth = 24

FYI I have done a test match on Linux, 24.2.1 vs. 24.1, 1:0+0.8 time control. Results:
LLR=3.08 [-2.94, 2.94] 3252 games, score: 51.25%
result=H1
ELO: 8.66 +-5.1 (95%)
LOS: 100.0%
peter
Posts: 3194
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Arasan 24.2

Post by peter »

jdart wrote: Sun Apr 14, 2024 7:42 pm > in Cutechess it doesn't work
what's the issue? When I run in UCI mode under cutechess-cli, I see learning activity in the logs, such as:
Tried only Cutechess- GUI, no .lrn- file is created by 24.2.1.
Peter.
Modern Times
Posts: 3557
Joined: Thu Jun 07, 2012 11:02 pm

Re: Arasan 24.2

Post by Modern Times »

jdart wrote: Sat Apr 13, 2024 9:48 pm This may not be a complete fix: Graham was saying he still had issues. But I'm releasing it because it does fix a real problem.
Well, ChessGUI is the GUI where there is the greatest potential for time losses, as it is I think Graham has to set a huge overstep margin to mitigate it. But many engines do run just fine there.
peter
Posts: 3194
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Arasan 24.2

Post by peter »

Modern Times wrote: Sun Apr 14, 2024 8:30 pm
jdart wrote: Sat Apr 13, 2024 9:48 pm This may not be a complete fix: Graham was saying he still had issues. But I'm releasing it because it does fix a real problem.
Well, ChessGUI is the GUI where there is the greatest potential for time losses, as it is I think Graham has to set a huge overstep margin to mitigate it. But many engines do run just fine there.
In 350 game run by Cutechess GUI no time loss, yet 1 after 10 games in Shredder (13), regards
Peter.
jdart
Posts: 4368
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Arasan 24.2

Post by jdart »

I have made another patch release (24.2.2) to fix UCI position learning (was working with ponder on, but not off). Any other fixes will have to wait until the next major release.

Note that under UCI, the learning info is reloaded from disk after receiving "ucinewgame." I am not sure all interfaces send this. cutechess-cli does, as does Arena.