Ethereal12.25 vs SlowChess2.2 [32-Threads, 2GB Hash, 60s+.6s]

[AndrewGrant]

Latest Ethereal (12.25) vs Latest SlowChess (2.2)
Games using 32-threads, with 2GB of hash with 60s+.6s time control.
PGNS:

Code: Select all

    Program                     +   -   Games   Score   Av.Op.  Draws
  1 Ethereal12.25             : 30  28   128    56.2 %   2378   76.6 %
  2 SlowChess2.2              : 28  30   128    43.8 %   2422   76.6 %

Code: Select all

    Ethereal12.25             : 128 (+ 23,= 98,-  7), 56.2 %
    SlowChess2.2              : 128 (+  7,= 98,- 23), 43.8 %

Cutechess was running using the following command:

./cutechess -resign movecount=3 score=400 -draw movenumber=40 movecount=8 score=10 -variant standard -concurrency 1 -games 128 -engine cmd=Ethereal12.25 proto=uci tc=60.00+0.60 option.Threads=32 option.Hash=2048 option.SyzygyPath=/home/andrew/Desktop/Syzygy/ name=Ethereal12.25 -engine cmd=SlowChess2.2 proto=uci tc=60.00+0.60 option.Threads=32 option.Hash=2048 option.SyzygyPath=/home/andrew/Desktop/Syzygy/ name=SlowChess2.2 -openings file=8moves_v3.pgn format=pgn order=sequential -pgnout Games.pgn

[jonkr]

Thanks for testing with 32-threads. I've actually never tried more than 8 threads, so happy that it ran okay and achieved a decent result against a very strong engine.

Not sure exactly what to expect with the balance on how much 32-threads compresses the elo gap from the additional drawishness vs additional new version Ethereal strength and probably weaker multi-threaded perf from SlowChess. But Ethereal 12.00 was always clearly ahead in standard chess in my single-thread tests, I think the very best result I got was -15 elo in 2000 games and the other matches were worse.