Search found 62 matches

by Geonerd
Sat Apr 06, 2019 8:21 am
Forum: Computer Chess Club: General Topics
Topic: AMD questions
Replies: 12
Views: 1070

Re: AMD questions

AMD's next-generation Ryzen chips, due to hit the shelves in a few months, should have excellent performance-per-watt, possibly significantly better than Intel's offerings. Watch the first 4 or five minutes of this video: https://www.youtube.com/watch?v=g39dpcdzTvk These chips will almost certainly ...
by Geonerd
Thu Apr 04, 2019 3:48 pm
Forum: Computer Chess Club: General Topics
Topic: Mate in 82?
Replies: 21
Views: 2114

Re: Mate in 82?

What am I missing? :? :oops: I don't see any way to force the black king off the c-file w/o dropping the d3 pawn (which appears to actually loose!)
by Geonerd
Thu Mar 07, 2019 6:10 pm
Forum: Computer Chess Club: General Topics
Topic: multi PV mode
Replies: 8
Views: 776

Re: multi PV mode

Larry, anyone.
Halving the cpu resources should cost the typical engine somewhere around 20(?) elo? Yet MPV =2 kills ~100 points. Why is the MPV performance hit so high? (A simple question with - I suspect - a complex answer! :roll: )
by Geonerd
Thu Mar 07, 2019 4:11 am
Forum: Computer Chess Club: General Topics
Topic: Questions about graphics cards for Leela
Replies: 14
Views: 1623

Re: Questions about graphics cards for Leela

Here are some benchmarks. As suggested, be sure to get a card capable of the running the fp-16 back end, as seen in the config notes. "--backend=cudnn-fp16"

https://docs.google.com/spreadsheets/d/ ... 1508569046
by Geonerd
Thu Mar 07, 2019 4:05 am
Forum: Computer Chess Club: General Topics
Topic: multi PV mode
Replies: 8
Views: 776

Re: multi PV mode

I'm not 100% sure this is happening, but it seems that setting MultiPV to N causes the engine to search all N first moves to a more or less equal depth. This short-circuits the engine's finely tuned pruning parameters and theoretically weakens the engine slightly. But the engine is also significantl...
by Geonerd
Fri Feb 08, 2019 7:25 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish Cluster MPI
Replies: 16
Views: 2294

Re: Stockfish Cluster MPI

petero2 wrote:
Fri Feb 08, 2019 5:44 pm

I have uploaded stockfish_cluster_win64.7z to this public dropbox folder:
Thank you for the compile and specific instructions! :D
by Geonerd
Fri Feb 08, 2019 7:23 pm
Forum: Computer Chess Club: General Topics
Topic: Glad we are back online!
Replies: 11
Views: 1699

Re: Glad we are back online!

Thanks Mr. X :D
by Geonerd
Sat Jan 26, 2019 2:18 am
Forum: Computer Chess Club: General Topics
Topic: Big boost in strength for LC0 by simply changing VGA card
Replies: 19
Views: 2275

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

What card were you running before? What NPS did it generate?
Have you enabled the FP16 back end on the new card? What NPS are you getting now?
by Geonerd
Wed Jan 23, 2019 12:24 am
Forum: Computer Chess Club: General Topics
Topic: LCZero GPU memory requirements?
Replies: 10
Views: 1901

Re: LCZero GPU memory requirements?

GPU memory bandwidth doesn't really matter. It's mostly cuda cores * clock speed. And you can use multiple GPUs as long as they are roughly the same. like a 2080 and 2080 ti or a 1060 and 1070. Up to 4 GPUs works well now. Now that the 2060 is out there's really no reason not to get that for Leela ...
by Geonerd
Mon Dec 31, 2018 1:49 am
Forum: Computer Chess Club: General Topics
Topic: AMD Ryzen 3000 Series CPUs
Replies: 9
Views: 1457

Re: AMD Ryzen 3000 Series CPUs

Speculation over the R3K series is even more wild and wooly than usual for a new CPU lineup. :wink: This fellow has some interesting information, leaks, analysis, etc. https://www.youtube.com/watch?v=ReYUJXHqESk