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Re: Stockfish TCEC6 PA_GTB

Posted: Fri Jun 20, 2014 12:29 am
by User923005
I have no special insights as to what was going on, but I think Marco wanted high standards for code quality and did not like patches that did not meet the standard whether they increased Elo or not.

Since 80% of the cost of software is maintenance, I would probably have pushed back like Marco also.

But I don't really know any specifics and I am only guessing.

Re: Stockfish TCEC6 PA_GTB

Posted: Wed Jun 25, 2014 1:02 am
by 64x
Hi Jeremy,

Wow, can't believe how long it has been since I last posted. Thank you for your hard work creating this. I am very interested in it both as analysis tool and code base I can use to practice long lost programming skills.

A couple of questions if you don't mind (considering my review of the code has been less than cursory and haven't read old threads):

1) When I use persistent hash, a ~4MB hsh file is created the first time. File grows with analysis and remains of that size even after unloading the engine. However, upon loading the engine again file goes back to original size (4MB). Is this expected behavior (i.e. growth is from transaction log that is later committed to the base file, which means file won't grow past the original size until that much has been committed in new records), or am I doing something wrong?

2) What tool stack are you using in Windows/Linux for your compiles?

Thanks in advance for your help!

Re: Stockfish TCEC6 PA_GTB

Posted: Wed Jun 25, 2014 5:16 pm
by petevine
64x wrote: However, upon loading the engine again file goes back to original size (4MB).!
This happened to me in a buggy gui app that activated the "Clear persistent hash" button on every startup.

Re: Stockfish TCEC6 PA_GTB

Posted: Wed Jun 25, 2014 11:40 pm
by 64x
Good point, I will try another GUI

Re: Stockfish TCEC6 PA_GTB

Posted: Sat Jun 28, 2014 3:49 pm
by echai
Please: how to solve this in the GUI Fritz 14?

Re: Stockfish TCEC6 PA_GTB

Posted: Tue Jan 13, 2015 3:05 pm
by brisas2k
Are there any updates for this engine coming up? Stockfish has gained considerable chess knowledge since last version of pa_gtb. Any info appreciated. Txs.

Re: Stockfish TCEC6 PA_GTB

Posted: Mon Jan 19, 2015 8:57 am
by Ace1
brisas2k wrote:Are there any updates for this engine coming up? Stockfish has gained considerable chess knowledge since last version of pa_gtb. Any info appreciated. Txs.
+1

Re: Stockfish TCEC6 PA_GTB

Posted: Tue Jan 20, 2015 7:42 am
by Peter
+2!
Master branch using Syzygys now Gaviotas wouldn't be necessary even anymore but I love the learning- feature.

Re: Stockfish TCEC6 PA_GTB

Posted: Tue Jan 20, 2015 11:42 am
by User923005
Gaviota tablebase files give perfect information. Syzygy bases do not.
If you want to know the optimal move choices (not just some winning move) you need the Gaviota tablebase files.

Re: Stockfish TCEC6 PA_GTB

Posted: Thu Feb 05, 2015 6:58 am
by Peter
User923005 wrote:Gaviota tablebase files give perfect information.
However, I'd be even more happy with a learning Stockfish6 without any tbs or bbs than with a nonlearning one with Gaviotas, a nonlearning one with Syzygys we already have anyhow since quite a while, in the meantime there's rather some of them again, but there's not a single learning one among them.
:)