Search found 59 matches

by crem
Fri Dec 28, 2018 10:22 am
Forum: Computer Chess Club: General Topics
Topic: LC0 using 4 x 2080 Ti GPU's on Chess.com tourney?
Replies: 5
Views: 717

Re: LC0 using 4 x 2080 Ti GPU's on Chess.com tourney?

The speeds are pretty low for 4 x 2080 Ti, only some 2.5 times higher than my single 2070. And the effective speed-up to 4 GPUs is probably not that good, so even this factor of 2.5 in NPS is lower strength-wise. They moved from a rented server to their own with 4 GPUs and 2 CPUs. nps turned out to...
by crem
Mon Dec 24, 2018 9:51 am
Forum: Computer Chess Club: General Topics
Topic: My non-OC RTX 2070 is very fast with Lc0
Replies: 85
Views: 8760

Re: My non-OC RTX 2070 is very fast with Lc0

No, in the second case there was no GPU usage for sure. Roundrobin is a new multiGPU option I used in v20, and that is remarkably efficient in single-GPU as well. Here was my commandline: lc0-v20rc2.exe --cpuct=3.4 --backend=roundrobin --backend-opts="(backend=cudnn-fp16,gpu=0)" --minibatch-size=51...
by crem
Wed Dec 19, 2018 2:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Policy training in Alpha Zero, LC0 ..
Replies: 26
Views: 1203

Re: Policy training in Alpha Zero, LC0 ..

ah! thanks! so, the end user crowd source sends training games to the LCZero server, with all this extra information, back of a fag packet calculation suggests each PGN increased from maybe 500 bytes to 100 moves x 30 children each x 5? bytes visit count = 15000 bytes, call it a thirty-fold size in...
by crem
Wed Dec 12, 2018 11:14 pm
Forum: Computer Chess Club: General Topics
Topic: The Lc0 squeak
Replies: 10
Views: 1135

Re: The Lc0 squeak

Werewolf wrote:
Wed Dec 12, 2018 10:27 pm
Anyone know what it is?
That's "GPU coil whine" (googleable).
There are lots of discussions on forums and there are also youtube videos so that people whose GPU doesn't whine could also listen.
by crem
Mon Dec 10, 2018 10:14 pm
Forum: Computer Chess Club: General Topics
Topic: Scaling of Lc0 at high Leela Ratio
Replies: 21
Views: 2500

Re: Scaling of Lc0 at high Leela Ratio

That +2 -0 =2 for SF10 at real LTC in these games with diverse developments, the double failure of Lc0 to convert, indicate again that scaling to real LTC might be not that good for Lc0. Which Lc0 version did you use? The most recent one v0.19.1 (it's just a version rename of v0.19.1-rc2 from 3 day...
by crem
Fri Dec 07, 2018 12:02 pm
Forum: Computer Chess Club: General Topics
Topic: Alphazero news
Replies: 381
Views: 30040

Re: Alphazero news

All our values are between 0 and 1, so if the best move has a value of 0.8, we would sample from all moves with values >= 0.79. The paper says: "At the end of the game, the terminal position sT is scored according to the rules of the game to compute the game outcome z: −1 for a loss, 0 for a draw, ...
by crem
Fri Dec 07, 2018 11:34 am
Forum: Computer Chess Club: General Topics
Topic: Alphazero news
Replies: 381
Views: 30040

Re: Alphazero news

The paper says that during the training moves are selected "in proportion to the root visit count", without mention that it happens only for first 30 plies (so I assume it happens for the entire game). However, in the training pseudocode it looks like there is a temperature cutoff at ply 30: def sel...
by crem
Sun Nov 25, 2018 10:21 pm
Forum: Computer Chess Club: General Topics
Topic: 2900 Elo points progress, 10 million games, 330 nets
Replies: 18
Views: 2470

Re: 2900 Elo points progress, 10 million games, 330 nets

1. So far in our tests we fail to reach A0 strength given the same number of training games (44 million). 2. We don't know why it is. Maybe we have a bug (probably), maybe we use wrong FPU, maybe we guessed wrong Cpuct, maybe we understood the paper incorrectly, maybe we don't shuffle training games...
by crem
Fri Nov 23, 2018 5:47 pm
Forum: Computer Chess Club: General Topics
Topic: LC0 graph has gone impressive
Replies: 32
Views: 3544

Re: LC0 graph has gone impressive

Damir wrote:
Fri Nov 23, 2018 5:06 pm
When I try and Click on game ID I get this message: Thanks to http://chesstempo.com for the board viewer!
Nothing happens after that.
Try going to http:// instead of https://
Board viewer doesn't work well with https due to cross site scripting protection.
by crem
Thu Nov 22, 2018 9:34 am
Forum: Computer Chess Club: General Topics
Topic: My non-OC RTX 2070 is very fast with Lc0
Replies: 85
Views: 8760

Re: My non-OC RTX 2070 is very fast with Lc0

I checked max node collisions for 32. 48, 64 values. In tactical WAC200.epd corrected by Albert Silver, in 6 runs, I got too that 48 or even 64 is the best. But in more positional and reflecting better the real strength STS 1500 (1 run), Openings200 (6 runs), ERET (6 runs), the results came inconcl...