Configuring lc0 the right way

[Cardinalem]

Hi all..

I'm trying to configure Lc0 in the best way possible. I'm at the point that i'm able to use it as an UCI-engine in a Fritz GUI. I've made some engine matches. But i don't know if "my" lc0-Engine uses my Graphiccard (RTX 2080) in the right way. How can i see/test it? And can someone tell me the optimal settings for my PC?
Some information about my System:

AMD TR 1950X @ 3,7 GHz
32 GB Ram

Geforce RTX 2080

The first picture shows the Files i've downloaded....hope that these are complete and i haven't forgotten to download additional needed files.

The second picture shows my current configuration of Lc0. Are there some improvements possible?

Greetings to all Chess players here.

Cardinalem

[glbchess64]

Threads is a bit high. It must be 1 or 2. The best is probably 2. Unlike AB engines to many threads does not give a better play when you use lc0 with a GPU. More than 2 threads is needed for several GPU.

Weights file extension is not .txt but  .pb.gz but the name is not a problem (you can name it as you want).

Some parameters depends of TC used.

For matches the best is not using a GUI but using cutechess-CLI.

[Cardinalem]

Hi glbchess64

thanks for the Information. The extension of the weights-file..... in an example for the version 0.17 of Lc0 they named it as i've done.

And this file should be in the same directory as the lc0-file. Or am i wrong? And can I somehow check if Lc0 uses this file too?

[glbchess64]

At the beginning of the leela project weights were in text format. I don't remember exactly when this has changed but now the format is proto buffer (.pb) and compression (.gz)

[Jesse Jordache]

You can just download the compressed weights file - there's no need to dezip it.  Plus, as far is I remember the name of the weights file without the extension is good enough in any configuration, but it's been a while for me since I've been using nibbler lately and changing the net is just two clicks. 

Anyway, no file extension simplifies things if you've downloaded a whole bunch and decompressed some but not others.  But double-check this first.

[Steve C.]

You are correct about having no file extension. After I download a weights file (e.g weights_run1_60605.pb.gz) I just rename it to 60605 (not file extension) and in the configuration just point to the file using the full path name (e.g. c:\engines\lco\weights\60605).

[Anil Dharan]

No need to type in anything. <autodetect> is good enough.

[Markus Domanski]

What about this: https://en.chessbase.com/post/optimizing-fat-fritz

Does anyone know how it influences Leela?

[Jesse Jordache]

If you look closely, the the pictures of the configs say "Fat Fritz(in lc0)".  It's just their proprietary net running in Lc0.