Stockfish 121204 (ELO +18)

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Prima
Posts: 328
Joined: Tue Dec 14, 2010 6:12 am

Stockfish 121204 (ELO +18)

Post by Prima » Wed Dec 05, 2012 11:10 am

From authors of Stockfish:
Stockfish can handle 64cores/threads now

https://github.com/mcostalba/Stockfish/commits/master

- Merge branch 'eval_cache'

Merge branch 'eval_cache'

Use an eval cache instead of TT to store node
position evaluations.

It is already an improvment and, because it frees
two TT entry slots, paves the way to extend TT to
store both upper and lower bounds.

After 4855 games, single thread, 15"+0.05
Mod vs Orig 1165 -920 - 2770 ELO +18

bench: 5149248


- Increase MAX_THREADS to 64


Stockfish source - Dec 01, 2012

- Reintroduce eval optimizaion from null search
- Don't save eval score in TT
- Don't use TT just to save a node evaluation
- Don't read eval from TT anymore
- Retire eval optimization from null search
- Add eval cache infrastructure
Stable Stockfish 121204 64-bit compiles for SSE and non-SSE PCs from Quocvuong82:
Thanks Quocvuong82! Much appreciated :D

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