search

cosmobobak / viridithas

A superhuman chess engine.
MIT License
94 stars 8 forks source link

how to get the NNUE file ? #141

Closed tissatussa closed 5 months ago

tissatussa commented 5 months ago

while compiling i have an error at the end : it can't find the NNUE file .. i looked for it, but the (v12.0.0) asset ZIP doesn't contain it .. so i tried to git clone the newest source (PR 140), even with the --recursive option, but the NNUE file isn't downloaded that way ..

then i re-found (my) #83 and this gave the perfect answer : how to download the (newest) NNUE file and also how to compile (on Linux), not using the makefile .. your #83 info also works with the newest Viridithas, so i managed to compile : a valid binary v13.0.0-dev is created, with filesize 23.9 Mb .. this is a lot bigger than previous versions !?

can you elaborate on this ? you could mention this in the README, i think most people will use the makefile ..

[ i'm on Xubuntu 22.04 ]

cosmobobak commented 5 months ago

Yes, the new NNUE is significantly larger than previous, because it has nine king buckets and therefore significantly more parameters than before, and I'm also yet to apply some of the compression techniques that can be used (LEB encoding, king feature-plane merging). I'll add a section to the README on compilation soon.

cosmobobak commented 5 months ago

Build instructions added to the README in https://github.com/cosmobobak/viridithas/commit/eefa0c8f079cbfcc5e8d11228d373922c66b9468, I hope future compiles are easier!