Search found 820 matches

by Joerg Oster
Thu Jul 22, 2021 9:04 pm
Forum: Computer Chess Club: General Topics
Topic: stockfish evaluates knight as more than rook
Replies: 14
Views: 1329

Re: stockfish evaluates knight as more than rook

If I remove knight b1 NNUE gives me -1272(-6.12) If I remove both knight b1 and rook a1 NNUE gives me -1271(-6.11) I used the NNUE that latest stockfish developement use. Stupid NNUE and it is better if the stockfish stop to use it. Both evals are about 100% loss chance according to stockfish, so w...
by Joerg Oster
Mon Jul 12, 2021 8:30 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: WIP, Eta - GPGPU ANN based engine, RFC
Replies: 17
Views: 10216

Re: WIP, Eta - GPGPU ANN based engine, RFC

... 3. The ab q-search is pretty much going to be worse than a well trained resnet’s eval. ... To get an idea of this one could run an Lc0 depth 1 (no policy-head, n playouts) vs SF NNUE depth 1 (root+ab-q-search) match. -- Srdja Stockfish is weak at these low depths. No doubt. Is it really possibl...
by Joerg Oster
Sat May 22, 2021 3:46 pm
Forum: Computer Chess Club: General Topics
Topic: Banksia GUI released
Replies: 1418
Views: 382749

Re: Version 0.44 beta released

When setting up a new position, the half-move and the full-move numbers can't be changed.

I also noticed this dialog has 'OK' and 'Cancel' buttons, while most (or all?) other dialogs don't.
I would prefer having these buttons for all dialogs.
by Joerg Oster
Fri May 21, 2021 7:37 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: SPCC: Testrun of Stockfish 210518 finished
Replies: 1
Views: 1180

Re: SPCC: Testrun of Stockfish 210518 finished

AB-testrun of Stockfish 210518 finished. First result of a Stockfish-Dev with the new (and bigger) nnue-net architecture. https://www.sp-cc.de (Perhaps you have to clear your browsercache or reload the website) Thank you! Only a small elo gain but a net more than double the size than before. Not su...
by Joerg Oster
Wed May 19, 2021 12:31 pm
Forum: Computer Chess Club: General Topics
Topic: Stockfish with new NNUE architecture and bigger net released
Replies: 54
Views: 22798

Re: Stockfish with new NNUE architecture and bigger net released

peter wrote:
Wed May 19, 2021 11:47 am
Spliffjiffer wrote:
Wed May 19, 2021 11:28 am
Jörg Oster's HalfKAv2 (exp HalfKAv2 version)
Good to know that too, thanks regards
Just to clarify, it was my compile, yet the net and code from @sopel (Tomasz Sobczyk). :wink:
by Joerg Oster
Tue May 18, 2021 4:10 pm
Forum: Computer Chess Club: General Topics
Topic: Multi-threaded shortest mate solver
Replies: 24
Views: 9674

Re: Multi-threaded shortest mate solver

lechmazur wrote:
Tue May 18, 2021 1:12 pm
Cool, looks like enough interest. I'll make a public release. :)
Looking forward to it!
by Joerg Oster
Sun May 02, 2021 10:13 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)
Replies: 53
Views: 24653

Re: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)

My concern was that setting group affinity for the new created threads in TT.clear() might destroy the thread-binding of the search threads. How could it? I don't know. :lol: Using the same id's for both raised some suspicion on my side. But I realized they are only used for distributing among the ...
by Joerg Oster
Sat May 01, 2021 5:21 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)
Replies: 53
Views: 24653

Re: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)

It is probably advisable to Limit the number of threads in this case to 16 or 32 at most. Why would you want to limit a CPU with 64 physical cores to 16 or 32 threads? For hash clearing purpose only, not for search. Clearing fi 16 GB with 16 threads should be sufficiently fast. My concern was that ...
by Joerg Oster
Mon Apr 26, 2021 8:16 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)
Replies: 53
Views: 24653

Re: New AMD Ryzen™ Threadripper™ PRO 3995WX (Windows and Multithreading Problem)

I removed thread binding by commenting the call to bindThisThread() but that turned out to be a disaster when using 128 threads (For some reason, the console output was very slow and the NPS was clearly bad) so I reverted this change. A friend of mine told me that hash size could be the problem. I ...