Dev Builds » 20200813-0539

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 06:33:16 584730 4002 68 2611 1323 -260.74 ± 6.85 631 1282 87 1 0 -657.25 ± 37.02
ncm-dbt-02 06:32:37 585175 4000 69 2635 1296 -264.3 ± 7.03 658 1250 92 0 0 -651.26 ± 35.96
ncm-dbt-03 06:33:58 585239 3988 72 2635 1281 -265.0 ± 7.0 654 1256 83 1 0 -664.79 ± 37.93
ncm-dbt-04 06:32:59 568929 4016 51 2628 1337 -264.41 ± 6.83 645 1288 74 1 0 -685.87 ± 40.25
ncm-dbt-05 06:34:01 580977 3994 42 2617 1335 -266.21 ± 6.82 645 1286 65 1 0 -707.19 ± 43.05
20000 302 13126 6572 -264.12 ± 3.09 3233 6362 401 4 0 -672.13 ± 17.05

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
461446 ncm-dbt-01 582778 2 0 1 1 -189.7 ± 55.98 0 1 0 0 0 -1129.65 ± 376.02
461445 ncm-dbt-04 566967 16 0 10 6 -254.49 ± 90.13 2 6 0 0 0 -1199.83 ± 190.04
461444 ncm-dbt-03 582819 488 11 321 156 -260.63 ± 19.64 77 156 11 0 0 -654.82 ± 116.74
461443 ncm-dbt-05 579951 494 2 334 158 -282.98 ± 20.13 89 154 4 0 0 -835.17 ± 242.0
461442 ncm-dbt-02 584790 500 6 330 164 -268.16 ± 19.99 84 156 10 0 0 -676.04 ± 124.55
461441 ncm-dbt-01 585211 500 11 329 160 -261.07 ± 19.66 80 158 12 0 0 -643.67 ± 110.29
461440 ncm-dbt-04 567561 500 4 320 176 -258.74 ± 18.26 74 168 8 0 0 -715.51 ± 146.53
461439 ncm-dbt-02 584790 500 9 336 155 -271.78 ± 21.25 90 147 13 0 0 -629.41 ± 104.8
461438 ncm-dbt-03 583908 500 10 338 152 -272.99 ± 21.13 90 148 12 0 0 -643.67 ± 110.29
461437 ncm-dbt-05 580945 500 4 329 167 -269.36 ± 18.98 81 163 6 0 0 -766.17 ± 188.02
461436 ncm-dbt-01 585548 500 8 325 167 -259.9 ± 19.51 78 162 9 1 0 -659.17 ± 131.36
461435 ncm-dbt-04 569190 500 3 333 164 -275.44 ± 19.41 85 160 5 0 0 -798.18 ± 231.48
461434 ncm-dbt-02 584285 500 12 321 167 -250.76 ± 18.62 72 165 13 0 0 -629.41 ± 104.8
461433 ncm-dbt-03 585000 500 10 331 159 -264.59 ± 20.09 83 155 12 0 0 -643.67 ± 110.29
461432 ncm-dbt-05 578300 500 7 329 164 -265.77 ± 19.41 81 160 9 0 0 -694.7 ± 134.18
461431 ncm-dbt-04 569909 500 6 332 162 -270.57 ± 20.0 85 156 9 0 0 -694.7 ± 134.18
461430 ncm-dbt-01 584832 500 10 321 169 -253.02 ± 19.42 76 159 15 0 0 -603.84 ± 95.91
461429 ncm-dbt-02 585042 500 9 328 163 -262.24 ± 19.26 79 161 10 0 0 -676.04 ± 124.55
461428 ncm-dbt-01 584285 500 15 321 164 -247.41 ± 19.45 74 158 18 0 0 -571.09 ± 86.01
461427 ncm-dbt-03 586097 500 10 334 156 -268.16 ± 21.33 88 149 12 1 0 -616.2 ± 109.19
461426 ncm-dbt-04 567126 500 6 329 165 -266.96 ± 19.28 81 161 8 0 0 -715.51 ± 146.53
461425 ncm-dbt-05 582736 500 5 315 180 -251.89 ± 17.95 70 170 10 0 0 -676.04 ± 124.55
461424 ncm-dbt-02 584916 500 5 339 156 -280.42 ± 20.6 91 152 7 0 0 -739.05 ± 163.27
461423 ncm-dbt-05 583531 500 7 326 167 -262.24 ± 19.26 79 161 10 0 0 -676.04 ± 124.55
461422 ncm-dbt-01 585211 500 8 327 165 -262.24 ± 19.26 79 161 10 0 0 -676.04 ± 124.55
461421 ncm-dbt-04 572074 500 8 322 170 -256.44 ± 18.8 75 164 11 0 0 -659.13 ± 116.77
461420 ncm-dbt-03 585506 500 5 327 168 -265.77 ± 18.84 79 164 7 0 0 -739.05 ± 163.27
461419 ncm-dbt-01 583531 500 3 321 176 -261.07 ± 17.07 71 176 3 0 0 -887.58 ± 222.18
461418 ncm-dbt-04 570068 500 7 321 172 -256.44 ± 18.8 75 164 11 0 0 -659.13 ± 116.77
461417 ncm-dbt-02 585421 500 8 318 174 -251.89 ± 18.5 72 166 12 0 0 -643.67 ± 110.29
461416 ncm-dbt-05 579289 500 4 340 156 -282.94 ± 20.29 91 154 5 0 0 -798.18 ± 231.48
461415 ncm-dbt-03 586393 500 8 324 168 -258.74 ± 18.54 75 166 9 0 0 -694.7 ± 134.18
461414 ncm-dbt-04 570308 500 8 334 158 -270.57 ± 20.28 86 154 10 0 0 -676.04 ± 124.55
461413 ncm-dbt-02 587664 500 11 330 159 -262.24 ± 20.33 83 153 14 0 0 -616.18 ± 100.06
461412 ncm-dbt-01 585379 500 7 329 164 -265.77 ± 19.97 83 156 11 0 0 -659.13 ± 116.77
461411 ncm-dbt-05 583656 500 8 312 180 -245.2 ± 18.67 69 167 13 1 0 -603.86 ± 103.96
461410 ncm-dbt-03 585843 500 8 335 157 -271.78 ± 19.86 85 157 8 0 0 -715.51 ± 146.53
461409 ncm-dbt-02 584495 500 9 333 158 -268.16 ± 20.81 87 150 13 0 0 -629.41 ± 104.8
461408 ncm-dbt-04 567165 500 9 327 164 -261.07 ± 20.45 82 155 12 1 0 -616.2 ± 109.19
461407 ncm-dbt-01 585801 500 6 337 157 -276.68 ± 20.74 90 151 9 0 0 -694.7 ± 134.18
461406 ncm-dbt-03 586350 500 10 325 165 -257.59 ± 19.22 77 161 12 0 0 -643.67 ± 110.29
461405 ncm-dbt-05 579413 500 5 332 163 -271.78 ± 19.86 85 157 8 0 0 -715.51 ± 146.53

Commit

Commit ID dd63b98fb06e050aa961fbad6fd1f9316f2b17df
Author mstembera
Date 2020-08-13 05:39:52 UTC
Add support for VNNI Adds support for Vector Neural Network Instructions (avx512), as available on Intel Cascade Lake The _mm512_dpbusd_epi32() intrinsic (vpdpbusd instruction) is taylor made for NNUE. on a cascade lake CPU (AWS C5.24x.large, gcc 10) NNUE eval is at roughly 78% nps of classical (single core test) bench 1024 1 24 default depth: target classical NNUE ratio vnni 2207232 1725987 78.20 avx512 2216789 1671734 75.41 avx2 2194006 1611263 73.44 modern 2185001 1352469 61.90 closes https://github.com/official-stockfish/Stockfish/pull/2987 No functional change
Copyright 2011–2026 Next Chess Move LLC