Search found 78 matches

by jstanback
Wed Sep 02, 2020 12:59 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Train a neural network evaluation
Replies: 13
Views: 2623

Re: Train a neural network evaluation

I am also updating the weights on every position, so I guess a batch size of one. Do LC0 and SFNNUE start by using random positions for tuning or some other method to get enough variety such that all the weights get tuned correctly?

John
by jstanback
Tue Sep 01, 2020 3:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Train a neural network evaluation
Replies: 13
Views: 2623

Re: Train a neural network evaluation

I am also trying to implement a NN eval for Wasp. I have an EPD file of about 30M positions from Wasp vs other engines with depth ~15 scores and game result. I randomly choose positions from this file and then do a 25 ply "playout" where only one move is randomly chosen and played. At each position ...
by jstanback
Sun Aug 23, 2020 12:46 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney August
Replies: 13
Views: 4228

Re: On-line engine blitz tourney August

I plan to run a home-brew Wasp neural network today. It's a tiny 4x2 node network with inputs that are similar to a standard eval, ie piece/sq, mobility, count of attacks near enemy king, backward pawns ... It's trained using random playouts starting from about 30M positions from Wasp games against...
by jstanback
Sat Aug 22, 2020 5:43 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney August
Replies: 13
Views: 4228

Re: On-line engine blitz tourney August

I plan to run a home-brew Wasp neural network today. It's a tiny 4x2 node network with inputs that are similar to a standard eval, ie piece/sq, mobility, count of attacks near enemy king, backward pawns ... It's trained using random playouts starting from about 30M positions from Wasp games against ...
by jstanback
Sun Aug 09, 2020 2:35 pm
Forum: Computer Chess Club: General Topics
Topic: Safe values for AMD Ryzen 9 3950x
Replies: 3
Views: 931

Re: Safe values for AMD Ryzen 9 3950x

AMD allows Vcore to go up to ~1.5 volts when running a single core. I think they do this more as a marketing gimmick than anything else since I don't think the max single core frequency can be maintained for more than a few seconds or so. I set my 3950x with Vcore=1.20 (droops to almost 1.13V at ful...
by jstanback
Sat Aug 01, 2020 2:37 pm
Forum: Computer Chess Club: General Topics
Topic: New chess rig
Replies: 64
Views: 5732

Re: New chess rig

When I put together my Ryzen 3950x with Asus Prime X570 MB last winter it didn't POST. Bummer! I tried re-doing all MB connections, one stick of RAM, but no go. Then I removed the M2 SSD and connected an old 2.5" SATA SSD and it worked. It turned out that after a BIOS update it worked fine with the ...
by jstanback
Sun Jun 14, 2020 5:26 pm
Forum: Computer Chess Club: General Topics
Topic: Wasp 4.00 by John Stanback available!
Replies: 9
Views: 2027

Re: Wasp 4.00 by John Stanback available!

Thanks for hosting Wasp on your web site and testing the pre-release versions, Frank!!

John
by jstanback
Sun Mar 22, 2020 3:20 pm
Forum: Computer Chess Club: General Topics
Topic: My budget 3950x build
Replies: 21
Views: 1910

Re: My budget 3950x build

I just tried several consecutive 120s searches of the opening position with SF10 at 32 threads on my Ryzen 3950x at 4.0 Ghz. I got 41895 Knps and had maximum package power of 139 watts and temperature of 70C. My Vcore droops from 1.20 to 1.16 volts when running all cores. My memory is set to 3200 Mh...
by jstanback
Fri Mar 20, 2020 10:58 pm
Forum: Computer Chess Club: General Topics
Topic: My budget 3950x build
Replies: 21
Views: 1910

Re: My budget 3950x build

That's a very nice overclock! The Ryzen's do something called "clock-stretching" where they may slow the clock down to prevent crashing, or something like that. I found that with Vcore below about 1.175V my CPU seemed stable at 4.1Ghz, but my benchmark speeds were slower, or at least no faster. So I...