Dev Builds » 20201214-0646

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

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

Commit ID d862ba40692797031ec5b0d95e46bcfc5a80f06c
Author mstembera
Date 2020-12-14 06:46:15 UTC
AVX512, AVX2 and SSSE3 speedups Improves throughput by summing 2 intermediate dot products using 16 bit addition before upconverting to 32 bit. Potential saturation is detected and the code-path is avoided in this case. The saturation can't happen with the current nets, but nets can be constructed that trigger this check. STC https://tests.stockfishchess.org/tests/view/5fd40a861ac1691201888479 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 25544 W: 2451 L: 2296 D: 20797 Ptnml(0-2): 92, 1761, 8925, 1888, 106 about 5% speedup closes https://github.com/official-stockfish/Stockfish/pull/3261 No functional change
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