Dann Corbit wrote: ↑Tue Oct 13, 2020 12:17 am
Ozymandias wrote: ↑Mon Oct 12, 2020 8:04 pm
Madeleine Birchfield wrote: ↑Mon Oct 12, 2020 7:42 pm
Ozymandias wrote: ↑Mon Oct 12, 2020 6:14 pm
Komodo 11.2 is only 26 Elo points behind version 14, at CCRL 40/15. It was released on July 17, 2017. SF had been the clear number one for over a year, by the time Lc0 matured, and now it is again; this last T60 run has been rather disappointing, not to mention incredibly long.
The main reason why Leela is somewhat competitive in TCEC is because Leela has oursourced net training to jhorthos and the J92 nets are better than the T60 nets. But even then it is weaker than Stockfish.
That, and because Lc0 scales better with HW. TCEC uses high end configurations for both GPU and CPU. But not even that + long time controls are enough to close the gap.
These statements are true for millionaires but not for ordinary people.
Which is to say, it is a lot cheaper to buy a super high end GPU than to buy a super high end CPU machine.
Of course, you may also have to buy a new power supply.
For example, a 2080 super can be bought for $760
and a 1200W power supply for around $40:
so around $800 gets you extremely high compute power for chess. To get equivalent compute power through a regular computer system would be more expensive.
You still need a CPU for Lc0.
SF currently wins the price/performance ratio by a clear margin.
SF on an i9-9900K is roughly equal to a 3090...
If you compare equal price: The 3080 is equal in price to the R9 5950X that's coming out. (And that one's much faster than the 9900K used by Ankan)
An RTX3090 is equal in price to a 24/32 core Threadripper.
Taken from Ankan from the Lc0 Discord:
Match: TCEC SF Dev, vs TCEC lc0 (J92-190)
LC0 version: 0.26.3 dev build
LC0 options: backend=cuda-fp16, minibatch-size=240, max-out-of-order-evals-factor=2.4, max-collision-events=800, max-prefetch=120, nncache=20000000, moves-left-max-effect=0.2,moves-left-threshold=0.0,moves-left-slope=0.004,smart-pruning-minimum-batches=320,moves-left-quadratic-factor=0.0,moves-left-scaled-factor=1.0,moves-left-constant-factor=0.0
Time control: 5m+5s
Hardware: RTX 3090 for lc0, core i9 9900K 16 threads for SF
Speed: start pos after 15 seconds: 30knps for lc0, 15 MNps for Stockfish.
Book: TCEC14 openings AND some CCC12 openings
Tablebases: none
Adjudication: none
Software: Arena
Comments: still some hope for lc0 at SUFI
Code: Select all
# PLAYER : RATING ERROR POINTS PLAYED (%) CFS(%) W D L D(%)
+ 1 Lc0 : 3 17 109.5 217 50.5 64 16 187 14 86.2
- 2 Stockfish_20092822 : 0 ---- 107.5 217 49.5 --- 14 187 16 86.2
White advantage = 38.91 +/- 8.60
Draw rate (equal opponents) = 91.24 % +/- 2.83