Leela on a weak pc, question

Discussion of anything and everything relating to chess playing software and machines.

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Werner
Posts: 2990
Joined: Wed Mar 08, 2006 10:09 pm
Location: Germany
Full name: Werner Schüle

Re: Leela on a weak pc, question

Post by Werner »

dkappe wrote: Sun Jan 13, 2019 9:43 pm Someone made a patch for lc0 v19.1 that switched nets at a certain piece count and changed cpuct, policy softmax and fpur at the same time. I don't think it's been ported to v20.x

Also, just released 11258-112x9-se. Best one yet.
Thanks very much for these networks.
I think a lot of chess engines use different searches for opening, middlegame and endgame.
Would be a good idea for Lc0 too and save the results in 3 different files. Perhaps in this scenario the engine is even faster with 1CPU and endgame training is possible.
Werner
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Ovyron
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Joined: Tue Jul 03, 2007 4:30 am

Re: Leela on a weak pc, question

Post by Ovyron »

Hey, I'm having the same question 6 years later.
What is today's best net for Leela on a weak pc that only can run its CPU version?
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Tibono
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Joined: Sat Aug 01, 2015 6:16 pm
Location: France
Full name: Eric Bonneau

Re: Leela on a weak pc, question

Post by Tibono »

Hi,
my current best ranked is LCzero TCEC 2023 using its 768x15 net.
Second best (close in ranking, roughly 35 Elo points below the above) is still the old (2019) Little Demon 2 combined with Little Ender using Eman Chimera (LD2 starts with 32 pieces, then LE plays when number of pieces decreases to 16 or less). The gain I observed using LE this way is around 24 Elo points compared to LD2 playing the whole game.
More recent nets I tested didn't prove much more efficient on CPU using backend BLAS - yet I did not experiment that much.
Happy to read suggestions!