Need help getting lc0 running with cutechess

[Felix Zaslavskiy]

I was trying to test playing lc0 against itself but when i tried to use the opencl version I was getting a Stalled engine.. refused to respond to ping on startup.

This command worked fine. The one with opencl was stalling out.

cutechess.exe -games 1 -engine cmd=lc0-v0.18.1-windows-blas\lc0.exe  -engine cmd=lc0-v0.18.1-windows-blas\lc0.exe -each proto=uci tc=30+5 arg="--weights=n16b6e505904aac83d965a35fb2367819d613dc73328d900129f4b43b6d986db60" dir=lc0-v0.18.1-windows-blas -debug -wait 200 -pgnout game.pgn

I noticed that first time OpenCL goes through some tunning which takes about 30 seconds and a tuning file is created. Since the tuning is not done on subsequent runs I don't understand why the engine times out on start. Any ideas?

[Jupiter]

Try to run Lc0 opencl first.

execute and type 

uci

isready

go movetime 60000

Lets see if it will run.

[Felix Zaslavskiy]

Your command works and I noticed there is like a 6 second delay after i type isready and before  readyok message shows. This delay seems to be related to the block20 network weights.

When I switched to 6 block network weights was able to get cutechess working with opencl on my computer.

When i run it with cutechess with block 20 network i get:

5521 >Lc0 v0.18.1(1): isready

Engine Lc0 v0.18.1(0) failed to respond to ping

cutechess seems to timeout after 5 seconds and if engine is not ready it fails to start game.

[zz4032]

At least on Linux the path to the weights file needs to be complete (absolute).

[Jupiter]

It seemed like cutechess had been revised to address this issue last June.

https://github.com/cutechess/cutechess/pull/383/commits/f1d300100839d3322245c26f05572a11307098d6

You can downloard the latest windows compile of gui and cli at http://talkchess.com/forum3/viewtopic.php?f=2&t=66430&p=776197&hilit=cutechess#p776197

Check if it solves the problem.

[Felix Zaslavskiy]

That was helpful. Thanks