chess22k 1.12 released

[sandermvdb]

I've just released chess22k 1.12 which participated this weekend in the CSVN tournament. Score is around 3100 elo.
The binaries are build using Java 11.

https://github.com/sandermvdb/chess22k/ ... s/tag/1.12

[Graham Banks]

Thanks Sander.

How does one make it use 4 cores or 8 cores?

Would providing bat files for each make it easier for the user (as with the latest Pirarucu)?

[Gabor Szots]

That's a huge jump. Can't wait to test it.

[sandermvdb]

How does one make it use 4 cores or 8 cores?

Would providing bat files for each make it easier for the user (as with the latest Pirarucu)?

Using multiple cores can easily be set by using the UCI threads command. Or do you really need that it can be set using a .bat file?
But as is mentioned in the release notes, this version does not scale very good when using multiple cores. Work in progress...

[Graham Banks]

How does one make it use 4 cores or 8 cores?

Would providing bat files for each make it easier for the user (as with the latest Pirarucu)?

Using multiple cores can easily be set by using the UCI threads command. Or do you really need that it can be set using a .bat file?
But as is mentioned in the release notes, this version does not scale very good when using multiple cores. Work in progress...

Yes, you're right.
I'll see whether I can include it in my next 8CPU Swiss.
I seem to recall issues when I tried previously, but could be wrong.

[Werner]

I have jre-10.0.2 on my pc and your engine Needs a newer version. I could not find a download link for jre-11.

[Werner]

with an early jre 11 I get following Errors:


C:\Users\Agando\Arena\Engines\chess22k-master\1.12>java -Xmx1024M -jar chess22k-1.12.jar uci
Exception in thread "chess22k-search" Exception in thread "chess22k-max-timer" java.lang.IllegalAccessError: tried to ac
cess field nl.s22k.chess.engine.MainEngine.cb from class nl.s22k.chess.engine.MainEngine$1
at nl.s22k.chess.engine.MainEngine$1.run(MainEngine.java:63)
java.lang.IllegalAccessError: tried to access field nl.s22k.chess.engine.MainEngine.synchronizedObject from class nl.s22
k.chess.engine.MainEngine$2
at nl.s22k.chess.engine.MainEngine$2.run(MainEngine.java:79)
Exception in thread "chess22k-info" java.lang.IllegalAccessError: tried to access field nl.s22k.chess.engine.MainEngine.
calculating from class nl.s22k.chess.engine.MainEngine$3
at nl.s22k.chess.engine.MainEngine$3.run(MainEngine.java:110)

[Werner]

Found a solution for me:
the engine works using openjdk-11.0.1_windows-x64_bin.zip. I copied the files in the chess22k folder and used the new java.exe.

[Graham Banks]

How does one make it use 4 cores or 8 cores?

Would providing bat files for each make it easier for the user (as with the latest Pirarucu)?

Using multiple cores can easily be set by using the UCI threads command. Or do you really need that it can be set using a .bat file?
But as is mentioned in the release notes, this version does not scale very good when using multiple cores. Work in progress...

Yes, you're right.
I'll see whether I can include it in my next 8CPU Swiss.
I seem to recall issues when I tried previously, but could be wrong.

I get a JNI error message when I try to run chess22k 1.12 on my octal.
Any suggestions?

[Werner]

Hi Graham,
which Version of Java do you use?
As I wrote here: you need to use Java 11 for this engine.