Stockfish TCEC6 PA_GTB

[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.

[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!

[petevine]

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.

[64x]

Good point, I will try another GUI

[echai]

Please: how to solve this in the GUI Fritz 14?

[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.

[Ace1]

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

[Peter]

+2!
Master branch using Syzygys now Gaviotas wouldn't be necessary even anymore but I love the learning- feature.

[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.

[Peter]

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.