Saturday, November 21, 2015

Stockfish 15112107 - new development version very strong chess engine UCI (author: Marco Costalba)

Stockfish - chess engines UCI

Previous version chess engine Stockfish 

Author compilation - 
Marco Costalba

Information on the compilation:
Timestamp: 1448088530 

Rewrite how threads are spawned 

Instead of creating a running std::thread and returning, wait in Thread c'tor that the native 
thread of execution goes to sleep in idle_loop(). 

In this way we can simplify how search is started, because when main thread is idle we are sure also all other threads will be idle, in any case, even at thread creation and startup. 

After lazy smp went in, we can simpify and rewrite a lot of logic that is now no more needed. This is hopefully the final big cleanup. 

Tested for no regression at 5+0.1 with 3 threads: 
LLR: 2.95 (-2.94,2.94) [-5.00,0.00] 
Total: 17411 W: 3248 L: 3198 D: 10965 

No functional change.


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