Search found 67 matches

by ankan
Tue Feb 12, 2019 5:03 pm
Forum: Computer Chess Club: General Topics
Topic: Scorpio+Lc0-32742 vs Stockfish 9
Replies: 12
Views: 966

Re: Scorpio+Lc0-32742 vs Stockfish 9

./lc0 -t 2 --backend=cudnn --verbose-move-stats --weights=../../../lcnets/ID-11248.gz | _ | | |_ |_ |_| v0.19.1 built Feb 11 2019 go movetime 100000 Loading weights file from: ../../../lcnets/ID-11248.gz Creating backend [cudnn]... For fair comparison, you should use cudnn-fp16 backend for lc0. Jus...
by ankan
Sat Jan 26, 2019 11:42 am
Forum: Computer Chess Club: General Topics
Topic: Big boost in strength for LC0 by simply changing VGA card
Replies: 19
Views: 1528

Re: Big boost in strength for LC0 by simply changing VGA card

Card I am using is now an RTX 2080Ti which reading on the forums seems to indicate would do very well. The previous card was a Quadro M4000 with around 1700 Cuda cores while the RTX 2080Ti has about 3.5x that. I would expect a bigger jump in NPS going from Quadro M4000 to the RTX 2080Ti (something ...
by ankan
Sun Jan 13, 2019 4:05 am
Forum: Computer Chess Club: General Topics
Topic: Dramatic drop in performance with LC0 after updating Cuda drivers
Replies: 14
Views: 1355

Re: Dramatic drop in performance with LC0 after updating Cuda drivers

I think there is some confusion. The 'cudart64_100.dll, cublas64_100.dll, cudnn64_7.dll' files is not part of driver - they are cuda runtime/cublas/cudnn library files. Very early builds of lc0 didn't come with them, so they had to be downloaded separately from nvidia's website (first two are part o...
by ankan
Tue Jan 08, 2019 6:04 pm
Forum: Computer Chess Club: General Topics
Topic: Building a new super fast computer
Replies: 10
Views: 1069

Re: Building a new super fast computer

nabildanial wrote:
Tue Jan 08, 2019 4:52 pm
Will you be updating the list with RTX 2060 too? I'm looking an upgrade for my GTX 1060 too.
I don't have a 2060 to test with, but based on specs I am pretty confident that it won't be more than 20% slower than 2070 (~15% slower most likely).
by ankan
Tue Jan 08, 2019 3:22 pm
Forum: Computer Chess Club: General Topics
Topic: Building a new super fast computer
Replies: 10
Views: 1069

Re: Building a new super fast computer

I plan on building a new super fast computer. I still am not sure whether I am going with Intel or AMD, but that is not the real concern ... my concern is what would be best for NN engines as a GPU card. Is it better to get 2 x 2080 Ti cards or just one Titan V card? Is there anything on the horizo...
by ankan
Sun Dec 23, 2018 1:04 pm
Forum: Computer Chess Club: General Topics
Topic: Smallnet (128x10) run1 progresses remarkably well
Replies: 24
Views: 2446

Re: Smallnet (128x10) run1 progresses remarkably well

The latest v0.20.0 rc1 release has some improvements for CPU bottlenecked scenarios in case you want to try (but don't expect more than 5-10% speedup).
https://github.com/LeelaChessZero/lc0/releases
by ankan
Fri Dec 21, 2018 7:18 pm
Forum: Computer Chess Club: General Topics
Topic: Smallnet (128x10) run1 progresses remarkably well
Replies: 24
Views: 2446

Re: Smallnet (128x10) run1 progresses remarkably well

I have a question about the engine I have: lc0 v0.20-de 12 Dec With older test30 bignets it achieves high NPS from Initial Board position after filling about half of its large chache size, a long time: ID 32112 info depth 17 seldepth 46 time 166191 nodes 7327539 score cp 48 hashfull 426 nps 44091 W...
by ankan
Thu Nov 15, 2018 6:42 am
Forum: Computer Chess Club: General Topics
Topic: How good is the RTX 2080 Ti for Leela?
Replies: 48
Views: 8602

Re: How good is the RTX 2080 Ti for Leela?

Another thing to notice in this table is that fp16 numbers tend to be >> 2x fp32 numbers. This makes me a bit suspicious. That is because we use Tensor Cores for FP16 path. The speedup is only about 3X (and not 8X as raw TFlops nos would suggest) because fp32 path uses Winograd algorithm for convol...
by ankan
Sun Oct 28, 2018 4:27 am
Forum: Computer Chess Club: General Topics
Topic: How good is the RTX 2080 Ti for Leela?
Replies: 48
Views: 8602

Re: How good is the RTX 2080 Ti for Leela?

oh, that’s intereresting. what does minibatch do? I guess evaluates 512 positions as a batch?! but who provides the positions, I mean if everytime I want an evaluation, I have to wait for somebody else to want another 511 positions before i get get mine, I’m going to be doing a lot of stalling, wai...
by ankan
Sat Oct 27, 2018 6:11 am
Forum: Computer Chess Club: General Topics
Topic: How good is the RTX 2080 Ti for Leela?
Replies: 48
Views: 8602

Re: How good is the RTX 2080 Ti for Leela?

I think I might have used different settings (just to maximize nps). I also might have the GPU overclocked when I posted that result. Generally letting it run for longer (like for 5m nodes) with bigger nncache setting results in higher nps. I just updated the sheet with benchmark at two different se...