Search found 366 matches

by chrisw
Sun Jan 20, 2019 11:06 am
Forum: Computer Chess Club: General Topics
Topic: Why Lc0 eval (in cp) is asymmetric against AB engines?
Replies: 16
Views: 2326

Re: Why Lc0 eval (in cp) is asymmetric against AB engines?

I think that’s the major factor, especially at this TC, but “comtempt” (relatively dramatic cp scores) also plays a part...when possible I exclusively use win% with leela now because after a short time you can understand her evaluation in traditional “+-, +/-, +/=“, etc terms. If the cp value is in...
by chrisw
Sun Jan 20, 2019 1:42 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: GPU laptop 1070
Replies: 1
Views: 155

Re: GPU laptop 1070

I’m about to discover if a 1070 in a laptop consuming a few watts only is effectively equivalent to the central heating and air conditioning version in a desktop. Hopefully last obstacle (cudnn versions not matching) shortly solved, then discovery ..... Eventually solved the cudnn problem, which wa...
by chrisw
Sat Jan 19, 2019 10:33 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: GPU laptop 1070
Replies: 1
Views: 155

GPU laptop 1070

I’m about to discover if a 1070 in a laptop consuming a few watts only is effectively equivalent to the central heating and air conditioning version in a desktop.

Hopefully last obstacle (cudnn versions not matching) shortly solved, then discovery .....
by chrisw
Thu Jan 17, 2019 11:54 am
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Is it the Hardware speed or some breakthrough programming innovation? So far what is the score between Komodo and Leela ? https://www.youtube.com/watch?v=ymDA7-hdkKA My answer is a bit different than others. Leela (following AlphaZero) has found a way to use a powerful GPU for chess, which is itsel...
by chrisw
Thu Jan 17, 2019 10:10 am
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Is it the Hardware speed or some breakthrough programming innovation? So far what is the score between Komodo and Leela ? https://www.youtube.com/watch?v=ymDA7-hdkKA My answer is a bit different than others. Leela (following AlphaZero) has found a way to use a powerful GPU for chess, which is itsel...
by chrisw
Thu Jan 17, 2019 8:51 am
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Is it the Hardware speed or some breakthrough programming innovation? So far what is the score between Komodo and Leela ? https://www.youtube.com/watch?v=ymDA7-hdkKA My answer is a bit different than others. Leela (following AlphaZero) has found a way to use a powerful GPU for chess, which is itsel...
by chrisw
Thu Jan 17, 2019 12:12 am
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Dann Corbit wrote:
Thu Jan 17, 2019 12:01 am
chrisw wrote:
Wed Jan 16, 2019 10:50 pm
Well a chess evaluating neural net is just a squashed and imperfect 32man egtb.
So is a chess player's brain, for that matter.
Yes, exactly. Knowledge is statistical. We know things because the thing worked for us in the past more often than not. Or somebody told us and we believed.
by chrisw
Wed Jan 16, 2019 10:50 pm
Forum: Computer Chess Club: General Topics
Topic: Can somebody explain what makes Leela as strong as Komodo?
Replies: 50
Views: 2296

Re: Can somebody explain what makes Leela as strong as Komodo?

Is it the Hardware speed or some breakthrough programming innovation? So far what is the score between Komodo and Leela ? https://www.youtube.com/watch?v=ymDA7-hdkKA Nope, nobody can explain, there is no explanation, it just is. I can explain why that. First it understands nothing, no patterns, not...
by chrisw
Wed Jan 16, 2019 9:30 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Egbb dll neural network support
Replies: 9
Views: 1509

Re: Egbb dll neural network support

Egbbdll now supports leela networks, which have policy head, as well besides value head. To use the lc0 networks, they should be converted to formats readable by egbbdll (i.e. either Protobuf (pb) format for Tensorflow backend, and UFF format for TensorRT support). The cpu version does not work yet...
by chrisw
Wed Jan 16, 2019 9:25 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: MCTS: How to deal with extreme imbalances
Replies: 6
Views: 332

Re: MCTS: How to deal with extreme imbalances

Consider this position https://lichess.org/KOImYPTl#60 which is highly favorable for white. [D] R7/2B4p/1p2k1p1/8/1Pp3p1/2Q3P1/1P2PP1P/5RK1 w - - 6 31 The game is between two instances of zurichess mcts (less_than_one). Once the game reaches this extreme imbalance the engine moves aimlessly because...