LC0 in Areana

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Thomas Kaas

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Jul 9, 2018, 1:44:17 PM7/9/18
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Hi

Can someone help me? I would like to run Leela as an engine in Arena(any given network). Does anyone know how to ? (Iam no computer expert) So need great detail.

Best regard

David Larson

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Jul 9, 2018, 1:59:41 PM7/9/18
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Thomas Kaas

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Jul 9, 2018, 2:23:58 PM7/9/18
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Thank you

Complicated for me :(

its says in document "  Alternatively, you can copy the Leela Chess Zero training instance folder to the ‘Engines’ folder, since it contains the required files mentioned above." I cant seem to find those files. Can you send a link please ?

Matt Blakely

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Jul 9, 2018, 3:44:40 PM7/9/18
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1. lc0 setup is exactly the same as the regular GPU setup in arena so the linked instructions are correct
2. Rather than copying the training folder, and rather than supplying command lines args, all you have to do is download the latest network (from networks tab on leela home page), unzip the file, rename it to "weights.txt" and put it in the same folder as the rest of the leela files.  That is what she looks for by default

That should do it.  The only tricky part for me was finding the DLLs, but you didn't mention that so hopefully you have them already.

Thomas Kaas

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Jul 9, 2018, 5:48:26 PM7/9/18
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Thank you. Finally got it right.

Now a new problem. My GPU version of leela plays VERY odd. And the CPU version is way better. Its supposed to the other way around. Any ideas ?


mandag den 9. juli 2018 kl. 19.44.17 UTC+2 skrev Thomas Kaas:

Matt Blakely

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Jul 9, 2018, 6:10:55 PM7/9/18
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How much NPS do you get with each of GPU vs. CPU?

Are you running the regular "gpu-win" version or the lc0 CUDA version?

Thomas Kaas

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Jul 10, 2018, 10:03:29 AM7/10/18
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Hi

Iam running the regular gpu version. But cant get Lco with cuda to work

mandag den 9. juli 2018 kl. 19.44.17 UTC+2 skrev Thomas Kaas:

David Grosvenor

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Jul 10, 2018, 10:59:15 AM7/10/18
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Hi Thomas,

could you specify your graphic-card (right click windows start -> device manager)? This would help us to help you :-)

Nan Zhang

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Jul 10, 2018, 11:02:09 AM7/10/18
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I had the same problem too but someone from the Leela team expanded the documentation page for running cuda lc0 and it helped me identify my problem. In my case, the version of cuda wasn't at the mininum version 397.44.  You can use the switch --debuglog as detailed in that doc (https://github.com/LeelaChessZero/lc0/wiki/Getting-Started-%28lc0%29) to identify the issue.

> lc0.exe --debuglog=log.txt

The doc was a bit misleading though. It said that it was only necessary to just extract the three dll files (and no need to run the installer), but to get to the minimum cuda driver version it was necessary to run the installer. It is necessary to install the cuda display driver (and leave out all the rest as the install is quite huge.)

Nan

Thomas Kaas

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Jul 10, 2018, 11:02:57 AM7/10/18
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Gforce GTX 1080


mandag den 9. juli 2018 kl. 19.44.17 UTC+2 skrev Thomas Kaas:

David Grosvenor

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Jul 10, 2018, 11:29:09 AM7/10/18
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OK - first of all be sure to install the latest Nvidia-Driver, for my 1060 + the aforementioned 3 DLLs everything went perfect. If this still doesn´t work, Nan´s proposal should work.

Thomas Kaas

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Jul 11, 2018, 8:14:29 AM7/11/18
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Thank you. It seems to work now.

Rgds


mandag den 9. juli 2018 kl. 19.44.17 UTC+2 skrev Thomas Kaas:
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