Search found 333 matches

by brianr
Thu Sep 12, 2019 1:54 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some newbie questions about lc0
Replies: 8
Views: 1484

Re: Some newbie questions about lc0

I am not aware of a good way to limit gpu use with Lc0, other than to have another gpu card.

If you have more than one, see here:
https://blog.lczero.org/2019/04/backend ... ation.html
by brianr
Thu Aug 29, 2019 5:28 pm
Forum: Computer Chess Club: General Topics
Topic: DQ 1.2 vs Bad Gyal 7 - the power of policy
Replies: 7
Views: 972

Re: DQ 1.2 vs Bad Gyal 7 - the power of policy

FWIW, it is quite a lot stronger than that, I think, at least on the hardware below. I trained a large 320x24 net and played against Stockfish 7 on one CPU (i5 3570K, 3.4GHz, boost to 3.8) My net was clearly stronger on an RTX 2060 (I know, not a favorable "Leela Ratio" for SF). Score of SF7 vs T60-...
by brianr
Mon Aug 26, 2019 1:12 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some newbie questions about lc0
Replies: 8
Views: 1484

Re: Some newbie questions about lc0

The input size is not a major factor and bitmaps are needed to approximate an "image" of the board for the nets to learn to generalize from, so mailbox might not work at all. The Alpha Zero paper explains it in detail. It is something like 14 bitmaps of 8x8 for 8 ply plus some for castling and such ...
by brianr
Sun Aug 25, 2019 5:10 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some newbie questions about lc0
Replies: 8
Views: 1484

Re: Some newbie questions about lc0

!papers LeelaBotBOTToday at 12:43 PM A general reinforcement learning algorithm that masters chess, shogi and Go through self-play: https://deepmind.com/documents/260/alphazero_preprint.pdf Mastering the game of Go with Deep Neural Networks & Tree Search: https://deepmind.com/research/publications/m...
by brianr
Sun Aug 25, 2019 4:39 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Some newbie questions about lc0
Replies: 8
Views: 1484

Re: Some newbie questions about lc0

Here is perhaps not the best place to ask about Lc0. You may already know about the wiki as you compiled Lc0. https://github.com/LeelaChessZero/lc0/wiki is a good source of info There is also a Forum here https://groups.google.com/forum/#!forum/lczero and the #help channel here (which is the most ac...
by brianr
Tue Aug 20, 2019 8:47 pm
Forum: Computer Chess Club: General Topics
Topic: The advantages of NN Learning engines..........
Replies: 8
Views: 985

Re: The advantages of NN Learning engines..........

You have it all wrong. It has no learning and no reinforcement learning either. It was just randomness due to thinking time and whatever happened on your machine. I certainly defer to the Lc0 experts, but I think the default mode with Leela is not to clear memory tables between games. Of course thi...
by brianr
Wed Jul 24, 2019 4:28 pm
Forum: Computer Chess Club: General Topics
Topic: Is the 320x24b larger net the strongest around for RTX GPU?
Replies: 63
Views: 5091

Re: Is the 320x24b larger net the strongest around for RTX GPU?

There is a clear difference in match results with and without the restart=on option in cutechess-cli. Below are two identical Leelas. Score of A vs B: 31 - 18 - 51 [0.565] 100 Elo difference: 45.42 +/- 47.89 Dead even within one game with restart=on Interesting, but not entirely clear to me. In the...
by brianr
Wed Jul 24, 2019 2:26 pm
Forum: Computer Chess Club: General Topics
Topic: Is the 320x24b larger net the strongest around for RTX GPU?
Replies: 63
Views: 5091

Re: Is the 320x24b larger net the strongest around for RTX GPU?

There is a clear difference in match results with and without the restart=on option in cutechess-cli.
Below are two identical Leelas.

Score of A vs B: 31 - 18 - 51 [0.565] 100
Elo difference: 45.42 +/- 47.89

Dead even within one game with restart=on
by brianr
Sun Jul 21, 2019 5:31 pm
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 219
Views: 22547

Re: buying a new computer

The huge memory usage of Lc0 is a returning theme on the sites of LC0. But this is the first established answer for it. Why, Dear "crem"? Is it so great secret? I can not believe the developers of Leela can not make modifiable the usage of RAM with an UCI parameter. Maybe it would decrease the Leel...
by brianr
Thu Jul 18, 2019 11:17 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: A question to MCTS + NN experts
Replies: 8
Views: 1829

Re: A question to MCTS + NN experts

The net architectures used with chess are very similar to those used in general image detection and classification, which work off of 2D grids of pixels (with additional color channels in more dimensions), so you can roughly think of the piece type 2D bitmaps like a piece list and each type of piece...