Search found 351 matches

by brianr
Tue Mar 24, 2020 4:37 pm
Forum: Computer Chess Club: General Topics
Topic: Issue with compilation of leela ver.0.24.x
Replies: 25
Views: 862

Re: Issue with compilation of leela ver.0.24.x

Maybe there is no developer of Leela, who read TCM? Or from them lacks the readiness to help? My impression is that very few of the many helpful Leela devs read here, and then only occasionally. If you want help, suggest joining the Lc0 Discord server and asking in the #help channel, which is very ...
by brianr
Fri Mar 20, 2020 9:51 am
Forum: Computer Chess Club: General Topics
Topic: Is more dedicated memory to gaming chip better for Leela
Replies: 2
Views: 223

Re: Is more dedicated memory to gaming chip better for Leela

Short answer for game playing is no. Longer answer is that larger nets which need more GPU RAM will take longer on your GPU whereas smaller nets will see more nodes. You can experiment, but a lot will depend on time controls. Even very large 30x384 nets fit it 2GB but will be quite slow. See: https:...
by brianr
Thu Mar 19, 2020 1:14 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Poor mans testing process please
Replies: 30
Views: 1599

Re: Poor mans testing process please

Depending on the current strength of your engine, early changes that result in large improvements (hopefully) are relatively easy to test. As the engine gets stronger, it gets increasingly more difficult to measure smaller improvements. Fast time control games are helpful for search related changes ...
by brianr
Sun Mar 15, 2020 11:01 pm
Forum: Computer Chess Club: General Topics
Topic: Engine programming
Replies: 32
Views: 2142

Re: Engine programming

I would like to provide another albeit isolated data point suggesting that the language speed does not matter at first, and for quite some time afterwards either. Testing my engine Tinker vs Stockfish and giving SF a 1:200 time handicap begins to make Tinker somewhat competitive. This was long befor...
by brianr
Tue Mar 03, 2020 12:44 pm
Forum: Computer Chess Club: General Topics
Topic: Leela CPU becomes Top 5 engine
Replies: 22
Views: 3248

Re: Leela CPU becomes Top 5 engine

Which net is best with Lc0 is a rather difficult question and depends on many factors.
Below are some suggestions.
Best bet is to experiment with your particular rig.

https://github.com/LeelaChessZero/lc0/w ... ts-for-Lc0
by brianr
Tue Mar 03, 2020 12:41 pm
Forum: Computer Chess Club: General Topics
Topic: AMD RYZEN 2950 Speed issue
Replies: 31
Views: 5882

Re: AMD RYZEN 2950 Speed issue

Michael Sherwin wrote:
Fri Mar 01, 2019 4:29 pm
Magic bitboard engines are going to run the slowest on the 2950x. That is why Crafty gains virtually nothing from the 2nd 16 cores. SF is not magic and does better than Crafty.
Stockfish does use some form of magic bitboards, although the tables may be smaller than those used in Crafty.
by brianr
Tue Feb 04, 2020 10:39 pm
Forum: Computer Chess Club: General Topics
Topic: rtx 2080ti scaling
Replies: 4
Views: 602

Re: rtx 2080ti scaling

stavros wrote:
Tue Feb 04, 2020 10:09 pm
hi.has anyone some data about 2080ti scaling for 1,x2,x4 sli 2080ti only for chess and Lc0? tnx
I am far from an expert (and only have one 2080ti), but SLI does not help (and may slow down) Lc0.
For some benchmark info see:
https://lc0.org/benchmarks