Search found 3602 matches

by Daniel Shawul
Sun Feb 28, 2021 9:31 pm
Forum: Computer Chess Club: General Topics
Topic: Interesting observation on the latest Scorpio
Replies: 2
Views: 518

Re: Interesting observation on the latest Scorpio

I have added something that could be the cause of that. When one side is winning by 90 percent or more only one of the winning variations is searched. This inflates winning scores and is able to find mates better than previous version. But the first two games against defenchess probably due to end g...
by Daniel Shawul
Thu Feb 18, 2021 11:53 pm
Forum: Computer Chess Club: General Topics
Topic: NN in Scorpio 3.0.11 is not loaded
Replies: 39
Views: 6710

Re: NN in Scorpio 3.0.11 is not loaded

Hi Jamal, The new graphics cards 3080 require new versions of cuda (11.1) and cudnn 8. The default installation of Scorpio like you did will not work on a 3080 because that is compiled with cuda 10. Cudnn 8 is more than 1 GB in size so I don't ship that. If you have cuda 11 and cudnn 8 already insta...
by Daniel Shawul
Mon Feb 15, 2021 11:28 pm
Forum: Computer Chess Club: General Topics
Topic: Introducing Flabby Fred 0.5
Replies: 15
Views: 1955

Re: Introducing Flabby Fred 0.5

I already have half the number of weights in the input layer by taking advantage of vertical symmetry.
But that doesn't decrease the inference time unlike your ff-0.5 idea.
Who knows a NNUE eval that is faster than classic could result in a better engine.
by Daniel Shawul
Mon Feb 15, 2021 12:56 pm
Forum: Computer Chess Club: General Topics
Topic: Paradigm shift
Replies: 5
Views: 844

Re: Paradigm shift

I wouldn't say search is obsolete now because it is very hard to write a search as efficient as stockfish's. If it was that easy, other engines like komodo would have done it before NNs arrived to the scene. That is why I think treating stockfish search as a "net runner" is plain wrong. The proof is...
by Daniel Shawul
Thu Feb 11, 2021 7:33 pm
Forum: Computer Chess Club: General Topics
Topic: NN in Scorpio 3.0.11 is not loaded
Replies: 39
Views: 6710

Re: NN in Scorpio 3.0.11 is not loaded

An observation: playing around with the Scorpio 3.0.11 settings, I noticed that using NNUEs doesn't make it necessary to use Scorpio egbbs. An example: -using 5-men egbb loaded into the RAM memory-82% -using only 3 & 4-men loaded into the RAM memory-91% The rest of the conditions were identical. I ...
by Daniel Shawul
Thu Feb 11, 2021 7:32 pm
Forum: Computer Chess Club: General Topics
Topic: NN in Scorpio 3.0.11 is not loaded
Replies: 39
Views: 6710

Re: NN in Scorpio 3.0.11 is not loaded

I set mt=1 in the ini file but Scorpio still uses 2 cores of my 4-core engine. What shall I do? Hi Gabor, What mode are you running ? It should obey mt parameter for NNUE/HCE but the meaning of the mt parameter is different for NNs. Please don't change the mt parameter in that case. If you have a G...
by Daniel Shawul
Tue Feb 09, 2021 3:54 pm
Forum: Computer Chess Club: General Topics
Topic: Fat Fritz 2
Replies: 491
Views: 40841

Re: Fat Fritz 2

Training a NNUE net from A0 style res nets, such as an Lc0 net, is not new either. Dkappe already trained several nets with this approach, and often his nets require different scaling than SF style nets. I see it as a ripoff of the latest and greatest open source project with some bizarre claims of...
by Daniel Shawul
Tue Feb 09, 2021 3:33 pm
Forum: Computer Chess Club: General Topics
Topic: Fat Fritz 2
Replies: 491
Views: 40841

Re: Fat Fritz 2

https://de.chessbase.com/post/fat-fritz-2-0-die-neue-nummer-1 Commercial version of SF? I smell SF dev here :) . Not really. I am testing Fat Fritz 2 right now. Fat Fritz 2 uses a nnue net, which is 2x bigger, than the Stockfish nnue-nets. Because of this, the binary is more than 40MB in size and t...
by Daniel Shawul
Mon Feb 08, 2021 9:23 pm
Forum: Computer Chess Club: General Topics
Topic: NN in Scorpio 3.0.11 is not loaded
Replies: 39
Views: 6710

Re: NN in Scorpio 3.0.11 is not loaded

I will do a test just for Scorpio 3.0.11 NNUE ! MCTS=0 NN=0 NNUE=1 (the original dh-o.2.bin net) NNUE_scale=256 I am very curious ! :lol: :wink: :lol: https://i.ibb.co/w7NCyBn/Scorpio-3-0-11-NNUE-in-console-mode.jpg You have to change the "nnue_type 0", then you will get a message "NNUE loaded" ins...
by Daniel Shawul
Mon Feb 08, 2021 4:00 pm
Forum: Computer Chess Club: General Topics
Topic: NN in Scorpio 3.0.11 is not loaded
Replies: 39
Views: 6710

Re: NN in Scorpio 3.0.11 is not loaded

Well I guess that is the problem.
The CPU version of Scorpio, both NN and NNUE are compiled with AVX2 support.
Sorry about that!