Search found 339 matches

by brianr
Thu Dec 05, 2019 6:49 pm
Forum: Computer Chess Club: General Topics
Topic: AMD Ryzen R9 3950X new build
Replies: 50
Views: 2156

Re: AMD Ryzen R9 3950X new build

Also, on a new system for NN engines, I see that some motherboards do have 2 slots, but don't support SLI (which is what I am used to). Do I just "plug in" 2 RTX video cards and the NN engine will see both and use them both? The NN engines like Leela (Lc0) will just use multiple GPU cards for playi...
by brianr
Fri Nov 22, 2019 12:48 am
Forum: Computer Chess Club: General Topics
Topic: NN Engine GPU Usage
Replies: 24
Views: 1073

Re: NN Engine GPU Usage

I have one 2080ti with Win10Pro 64bit. In Task Manager one of the GPU options for me is Cuda (as was mentioned before), which does show reasonable activity. However (as was also mentioned), I rely on MSI Afterburner and GPU-Z for the best picture of things. The MSI tool can also display (graphically...
by brianr
Mon Oct 07, 2019 1:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: A book on machine learning
Replies: 7
Views: 1900

Re: A book on machine learning

I think this one is pretty good, albeit for Go not Chess, and it's a bit pricey.
However, it does cover quite a lot specifically for Alpha Zero, and the code code samples do work (with a bit of tweaking last time I tried).

https://www.amazon.com/Deep-Learning-Ga ... 1617295329
by brianr
Fri Oct 04, 2019 10:55 am
Forum: Computer Chess Club: General Topics
Topic: buying a new computer
Replies: 280
Views: 42542

Re: buying a new computer

I would stay away from the 2060's because they only have 6GB of VRAM. The 2060 Supers all have 8gb of VRAM as far as I know. I would also stay away from reference design cards. Best to check reviews of the thermal performance of any card you select as this can be an issue in dual card configuration...
by brianr
Sun Sep 29, 2019 11:53 am
Forum: Computer Chess Club: General Topics
Topic: Laptop for Leela
Replies: 6
Views: 1114

Re: Laptop for Leela

For running at about 30 sec or so per move I doubt that you would notice any strength difference. I did not look at the detailed specs of those two, but if one is considerably less expensive... Leela also does better with full 6 piece syzygy tablebases which should ideally fit on an SSD (about 150 G...
by brianr
Sun Sep 29, 2019 11:37 am
Forum: Computer Chess Club: General Topics
Topic: Laptop for Leela
Replies: 6
Views: 1114

Re: Laptop for Leela

It may not be an option that works for you, but unless you very much want a laptop for portability a desktop would be a better option for Leela. You could also use a desktop and remote in to it from a mobile device. Leela works GPUs very hard, and the ones in laptops can get too hot, and then they a...
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: 2208

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: 1256

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: 2208

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: 2208

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...