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Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 12:34 am
by Chessqueen
To my surprise I just when to check the current standing in TCEC and was shocked by the performance of the young little cute Girl Alliestein
https://tcec-chess.com/

And this was an earlier version of Alliestein Vs Houdini ==> https://www.youtube.com/watch?v=qW3ir6zfnQA

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 1:39 am
by Graham Banks
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 9:06 am
by corres
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 9:08 am
by Graham Banks
corres wrote:
Fri Sep 13, 2019 9:06 am
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.
Offhand not sure - something to do with the compiler I think. They were discussing it in TCEC chat.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 10:10 am
by RubiChess
They used a compiler and optimization options different from the regular builds to make the binary a little faster. Unfortunately a library used by this build is buggy and causes a deadlock sometimes.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 10:16 am
by zullil
corres wrote:
Fri Sep 13, 2019 9:06 am
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.
The faulty file was a Windows dynamic library file: libwinpthread-1.dll. Due to insufficient testing and insufficient attention to prior bug reports, this buggy file was part of the package sent to TCEC by the Stockfish "team". The file itself is not part of the Stockfish code. At least, this is my understanding. So one more crash/hang by Stockfish and the engine is disqualified.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 11:18 am
by corres
zullil wrote:
Fri Sep 13, 2019 10:16 am
corres wrote:
Fri Sep 13, 2019 9:06 am
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.
The faulty file was a Windows dynamic library file: libwinpthread-1.dll. Due to insufficient testing and insufficient attention to prior bug reports, this buggy file was part of the package sent to TCEC by the Stockfish "team". The file itself is not part of the Stockfish code. At least, this is my understanding. So one more crash/hang by Stockfish and the engine is disqualified.
Thanks.
I did not know the official Stockfish use such .dll.
When I tried it I got very few speed up, if any.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 11:36 am
by mwyoung
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
That is ridiculous. Tcec is a computer chess fan driven site. Let's ask them!!!

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 11:40 am
by MikeGL
corres wrote:
Fri Sep 13, 2019 11:18 am
zullil wrote:
Fri Sep 13, 2019 10:16 am
corres wrote:
Fri Sep 13, 2019 9:06 am
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.
The faulty file was a Windows dynamic library file: libwinpthread-1.dll. Due to insufficient testing and insufficient attention to prior bug reports, this buggy file was part of the package sent to TCEC by the Stockfish "team". The file itself is not part of the Stockfish code. At least, this is my understanding. So one more crash/hang by Stockfish and the engine is disqualified.
Thanks.
I did not know the official Stockfish use such .dll.
When I tried it I got very few speed up, if any.
Yes, it was my impression too that Windows and OS/2 was designed to use DLL not to improve speed, but to save disk space. The intention was that similar API (libraries) inside the DLL file can be reused by most applications, hence saving small disk space.
Sorry, I am not claiming I am technically better than those SF programmers, but building a binary with additional DLL is _not_ optimum, in my opinion.

Re: Never thought that Alliestein was in the same level with LCZero and Stockfish !

Posted: Fri Sep 13, 2019 11:48 am
by zullil
corres wrote:
Fri Sep 13, 2019 11:18 am
zullil wrote:
Fri Sep 13, 2019 10:16 am
corres wrote:
Fri Sep 13, 2019 9:06 am
Graham Banks wrote:
Fri Sep 13, 2019 1:39 am
Even more shocking are the two crashes of Stockfish due to a faulty file.
One more crash and it's out.

The participant authors took a vote on whether or not the SF people should be allowed to replace that file. but because one voted no, it won't happen.
Which file of Stockfish was faulty?
After many tests this is really a surprise.
The faulty file was a Windows dynamic library file: libwinpthread-1.dll. Due to insufficient testing and insufficient attention to prior bug reports, this buggy file was part of the package sent to TCEC by the Stockfish "team". The file itself is not part of the Stockfish code. At least, this is my understanding. So one more crash/hang by Stockfish and the engine is disqualified.
Thanks.
I did not know the official Stockfish use such .dll.
When I tried it I got very few speed up, if any.
My understanding is that there is no real speed increase from using the linked library. But using it allows the MingW compiler to carry out LTO (link-time optimization), which does seem to give a good speed boost (at least on some systems, not mine).

I run Linux.