Dev Builds » 20210613-1110

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
ncm-dbt-01 01:22:12 582610 810 71 342 397 -120.89 ± 11.74 16 255 118 16 0 -257.38 ± 31.51
ncm-dbt-02 01:21:56 585971 814 82 352 380 -119.77 ± 11.4 16 250 129 12 0 -254.2 ± 30.12
ncm-dbt-03 01:20:37 585674 798 73 351 374 -126.32 ± 11.01 17 249 128 5 0 -271.87 ± 30.04
ncm-dbt-04 01:22:17 566731 822 81 362 379 -123.75 ± 11.3 16 261 122 12 0 -266.24 ± 31.01
ncm-dbt-05 01:22:43 577937 820 79 369 372 -128.42 ± 11.97 26 249 124 11 0 -265.72 ± 30.74
4064 386 1776 1902 -123.82 ± 5.14 91 1264 621 56 0 -262.99 ± 13.67

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
454520 ncm-dbt-03 585801 298 28 133 137 -127.9 ± 17.52 5 97 45 2 0 -282.4 ± 51.37
454519 ncm-dbt-02 585126 314 34 141 139 -123.32 ± 18.07 6 99 48 4 0 -265.37 ± 49.86
454518 ncm-dbt-01 582318 310 32 129 149 -112.48 ± 19.25 6 92 50 7 0 -233.9 ± 48.79
454517 ncm-dbt-04 566336 322 29 143 150 -128.57 ± 17.33 6 105 47 3 0 -282.19 ± 50.39
454516 ncm-dbt-05 575965 320 26 139 155 -128.2 ± 20.55 12 96 45 7 0 -258.32 ± 51.46
454515 ncm-dbt-03 585548 500 45 218 237 -125.38 ± 14.13 12 152 83 3 0 -265.78 ± 37.35
454514 ncm-dbt-02 586816 500 48 211 241 -117.55 ± 14.69 10 151 81 8 0 -247.41 ± 38.13
454513 ncm-dbt-01 582903 500 39 213 248 -126.17 ± 14.79 10 163 68 9 0 -273.0 ± 41.7
454512 ncm-dbt-04 567126 500 52 219 229 -120.67 ± 14.83 10 156 75 9 0 -256.44 ± 39.69
454511 ncm-dbt-05 579909 500 53 230 217 -128.55 ± 14.59 14 153 79 4 0 -270.57 ± 38.47

Commit

Commit ID ce4c523ad3defce2d19342d2dd1b43858ec33819
Author Tomasz Sobczyk
Date 2021-06-13 11:10:56 UTC
Register count for feature transformer Compute optimal register count for feature transformer accumulation dynamically. This also introduces a change where AVX512 would only use 8 registers instead of 16 (now possible due to a 2x increase in feature transformer size). closes https://github.com/official-stockfish/Stockfish/pull/3543 No functional change
Copyright 2011–2026 Next Chess Move LLC