Dev Builds » 20180530-1107

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NCM plays each Stockfish dev build 20,000 times against Stockfish 14. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.


Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN


Commit ID 626d43a329adca379421db5d378e33df0868584b
Author Rodrigo Exterckötter Tjäder
Date 2018-05-30 11:07:18 UTC
Use threads to clear the TT faster. Stockfish currently takes a while to clear the TT when using larger hash sizes. On one machine with 128 GB hash it takes about 50 seconds with a single thread, allowing it to use all allocated cores brought that time down to 4 seconds on some Linux systems. The patch was further tested on Windows and refined with NUMA binding of the hash initializing threads (we refer to pull request #1601 for the complete discussion and the speed measurements). Closes No functional change
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