Search found 480 matches

by brianr
Tue Jan 19, 2021 6:47 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Cutechess-cli and SPRT
Replies: 4
Views: 196

Re: Cutechess-cli and SPRT

A 5 Elo range is quite small to detect (with the 95% error) without thousands of games, unless there is a huge difference the strength of the engines. You mentioned expecting hundreds of Elo, but it might be less. Also, the time controls are very long for what is typically used with SPRT. Draw moven...
by brianr
Tue Jan 19, 2021 1:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Odd position for lc0 with 256x20-t40-1541.pb.gz NN
Replies: 5
Views: 146

Re: Odd position for lc0 with 256x20-t40-1541.pb.gz NN

Keep in mind that "depth" with Lc0 is nothing like A/B engines.
It is an estimate based on nodes.
by brianr
Mon Jan 18, 2021 5:28 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Odd position for lc0 with 256x20-t40-1541.pb.gz NN
Replies: 5
Views: 146

Re: Odd position for lc0 with 256x20-t40-1541.pb.gz NN

At one time I think lc0 would simply use up all RAM storing the tree. There are parameters to limit memory use. --ramlimit-mb (command line) RamLimitMb (UCI setoption) Maximum memory usage for the engine, in megabytes. The estimation is very rough, and can be off by a lot. For example, multiple visi...
by brianr
Tue Jan 12, 2021 9:05 pm
Forum: Computer Chess Club: General Topics
Topic: Some beginner questions about Lc0
Replies: 6
Views: 707

Re: Some beginner questions about Lc0

Why is 2 CPU cores default? In my test 1 core was fastest and 3 slowest. How does Lc0 use CPU? Lc0 is a totally different architecture and nothing like traditional alpha/beta engines. Lc0 uses CPUs to fill large batches of work for the GPUs to process with the net. The overhead in transferring data...
by brianr
Mon Jan 04, 2021 2:12 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Testing strategies for my engines playing strength
Replies: 8
Views: 701

Re: Testing strategies for my engines playing strength

I forgot a few more things. When you think you engine is stable, enter a tournament, like the monthly tourneys announced here. NOTHING will find bugs in an engine like a tournament. But please make an effort to get your engine stable. It is a pain when an engine has major problems for the tourney ma...
by brianr
Mon Jan 04, 2021 1:39 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Testing strategies for my engines playing strength
Replies: 8
Views: 701

Re: Testing strategies for my engines playing strength

Testing engines is its own specialty, however we all have to figure out some methodology to know if progress is being made. I cannot tell you how many times I have messed this up. That said, some suggestions: Learn to use cutechess-cli with an engines.json file for configurations. GUIs strongly not ...
by brianr
Sun Jan 03, 2021 6:38 pm
Forum: Computer Chess Club: General Topics
Topic: +100 elo breakthrough in new rewritten Lco engine ( Ceres)
Replies: 97
Views: 9387

Re: +100 elo breakthrough in new rewritten Lco engine ( Ceres)

While I have not used it in a GUI, based on what others are showing it clearly does work in GUIs.

Update: Ceres runs for me under Arena and Winboard both...

2nd Update: Runs fine under Cutechess GUI also.
by brianr
Sun Jan 03, 2021 6:27 pm
Forum: Computer Chess Club: General Topics
Topic: +100 elo breakthrough in new rewritten Lco engine ( Ceres)
Replies: 97
Views: 9387

Re: +100 elo breakthrough in new rewritten Lco engine ( Ceres)

Ceres is a UCI engine.
I have done those commands like go and the others and it plays just fine.

No, it does not load like Lc0.
There are no setoption commands.

I have not tried Ceres with a GUI, but it runs just fine with cutechess-cli.
by brianr
Sun Jan 03, 2021 5:46 pm
Forum: Computer Chess Club: General Topics
Topic: +100 elo breakthrough in new rewritten Lco engine ( Ceres)
Replies: 97
Views: 9387

Re: +100 elo breakthrough in new rewritten Lco engine ( Ceres)

corres wrote:
Sun Jan 03, 2021 5:28 pm
But without commands the Ceres can not work.
What commands are you looking for?
There are none of the setoption UCI commands that Lc0 might use as Ceres only uses the Lc0 backend.
Setup commands are in the json file for things like tablebase directories.
The "go" and other playing commands work.
by brianr
Sun Jan 03, 2021 3:18 pm
Forum: Computer Chess Club: General Topics
Topic: +100 elo breakthrough in new rewritten Lco engine ( Ceres)
Replies: 97
Views: 9387

Re: +100 elo breakthrough in new rewritten Lco engine ( Ceres)

From Ted Summers on Ed's forum: Here is a Boxed version that was uploaded by Chad on Discord. You will need to have Dot Net 5 installed. Ceres: https://drive.google.com/file/d/12wpPWyMfax1tlCKvAeUnlv0JgB2fh5gK/view?usp=sharing Dot Net: https://dotnet.microsoft.com/download/dotnet/thank-you/runtime-...