Full access to the folder with chess engines - about 3000 files!

If you do not want to wait a long time for download - donate a minimum of 10$, enter your email - you will gain full access to the folder with chess engines. Bonus on donate of 15$ - acces to the folder with games, tables, engines pack. My email: jotes@go2.pl

Or transfer bank:
IBAN: PL 58 2490 0005 0000 4000 2134 5302 SWIFT code of the bank: ALBPPLPW Name of bank: Alior Bank
Bank address: Lupuszanska 38D, 02-232 Warsaw Bank Country: Poland Postscript: donation - chess engines (and email)
List of donors

Monday, November 9, 2015

Stockfish 15110311 - new development version very strong chess engine UCI

Stockfish - chess engines UCI

Previous version chess engine Stockfish 

Author compilation - 
Marco Costalba

Information on the compilation:
Get rid of timer thread 

Unfortunately std::condition_variable::wait_for() is not accurate in general case and the timer thread can wake up also after tens or even hundreds of millisecs after time has elapsded. CPU load, process priorities, number of concurrent threads, even from 
other processes, will have effect upon it. 

Even official documentation says: "This function may block for longer than timeout_duration due to scheduling or resource contention delays." 

So retire timer and use a polling scheme based on a local thread counter that counts search() calls and a small trick to keep polling frequency constant, independently from the number of threads. 

Tested for no regression at very fast TC 2+0.05 th 7: 
LLR: 2.96 (-2.94,2.94) [-3.00,1.00] 
Total: 32969 W: 6720 L: 6620 D: 19629 

TC 2+0.05 th 1: 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 7765 W: 1917 L: 1765 D: 4083 

And at STC TC, both single thread 
LLR: 2.96 (-2.94,2.94) [-3.00,1.00] 
Total: 15587 W: 3036 L: 2905 D: 9646 

And with 7 threads 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 8149 W: 1367 L: 1227 D: 5555 

bench: 8639247


 Stockfish 15110311 - download

No comments:

Post a Comment