Search found 353 matches

by brianr
Mon Apr 06, 2020 12:52 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Using Freeware AI and Dynamically Generated Endgame Tablebases
Replies: 32
Views: 1224

Re: Using Freeware AI and Dynamically Generated Endgame Tablebases

Long answer: I don't think you appreciate how the nets learn, particularly the so-called "zero" approach. Zero here means almost no chess knowledge at all. The nets are not told what a bishop is, much less that two are better. Nobody, including the programmer, knows how many games/samples are enough...
by brianr
Thu Apr 02, 2020 1:30 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish Polyglot now violates the GPL
Replies: 21
Views: 1587

Re: Stockfish Polyglot now violates the GPL

I know next to nothing about GPL or any other licenses, but it took about 1 minute to find a copy of the polybook source. Here is one place:

https://github.com/massimilianogoi/Stockfish-Polyglot

It may not actually be part of SF, but an add-on.
by brianr
Tue Mar 24, 2020 4:37 pm
Forum: Computer Chess Club: General Topics
Topic: Issue with compilation of leela ver.0.24.x
Replies: 25
Views: 985

Re: Issue with compilation of leela ver.0.24.x

Maybe there is no developer of Leela, who read TCM? Or from them lacks the readiness to help? My impression is that very few of the many helpful Leela devs read here, and then only occasionally. If you want help, suggest joining the Lc0 Discord server and asking in the #help channel, which is very ...
by brianr
Fri Mar 20, 2020 9:51 am
Forum: Computer Chess Club: General Topics
Topic: Is more dedicated memory to gaming chip better for Leela
Replies: 2
Views: 247

Re: Is more dedicated memory to gaming chip better for Leela

Short answer for game playing is no. Longer answer is that larger nets which need more GPU RAM will take longer on your GPU whereas smaller nets will see more nodes. You can experiment, but a lot will depend on time controls. Even very large 30x384 nets fit it 2GB but will be quite slow. See: https:...
by brianr
Thu Mar 19, 2020 1:14 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Poor mans testing process please
Replies: 30
Views: 1888

Re: Poor mans testing process please

Depending on the current strength of your engine, early changes that result in large improvements (hopefully) are relatively easy to test. As the engine gets stronger, it gets increasingly more difficult to measure smaller improvements. Fast time control games are helpful for search related changes ...
by brianr
Sun Mar 15, 2020 11:01 pm
Forum: Computer Chess Club: General Topics
Topic: Engine programming
Replies: 32
Views: 2262

Re: Engine programming

I would like to provide another albeit isolated data point suggesting that the language speed does not matter at first, and for quite some time afterwards either. Testing my engine Tinker vs Stockfish and giving SF a 1:200 time handicap begins to make Tinker somewhat competitive. This was long befor...
by brianr
Tue Mar 03, 2020 12:44 pm
Forum: Computer Chess Club: General Topics
Topic: Leela CPU becomes Top 5 engine
Replies: 22
Views: 3353

Re: Leela CPU becomes Top 5 engine

Which net is best with Lc0 is a rather difficult question and depends on many factors.
Below are some suggestions.
Best bet is to experiment with your particular rig.

https://github.com/LeelaChessZero/lc0/w ... ts-for-Lc0
by brianr
Tue Mar 03, 2020 12:41 pm
Forum: Computer Chess Club: General Topics
Topic: AMD RYZEN 2950 Speed issue
Replies: 31
Views: 5951

Re: AMD RYZEN 2950 Speed issue

Michael Sherwin wrote:
Fri Mar 01, 2019 4:29 pm
Magic bitboard engines are going to run the slowest on the 2950x. That is why Crafty gains virtually nothing from the 2nd 16 cores. SF is not magic and does better than Crafty.
Stockfish does use some form of magic bitboards, although the tables may be smaller than those used in Crafty.