Dev Builds » 20200822-0900

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 06:31:08 583167 3986 157 1970 1859 -170.52 ± 4.31 107 1610 265 11 0 -444.08 ± 21.0
ncm-dbt-02 06:30:09 586482 4006 158 1991 1857 -171.71 ± 4.44 126 1590 278 9 0 -439.23 ± 20.49
ncm-dbt-03 06:29:11 585240 4000 176 1987 1837 -169.6 ± 4.35 111 1599 280 10 0 -436.43 ± 20.42
ncm-dbt-04 06:28:13 567507 4000 163 2021 1816 -174.77 ± 4.49 140 1586 266 8 0 -448.02 ± 20.96
ncm-dbt-05 06:30:28 581146 4008 163 2009 1836 -173.04 ± 4.61 142 1576 272 14 0 -436.81 ± 20.72
20000 817 9978 9205 -171.93 ± 1.99 626 7961 1361 52 0 -440.86 ± 9.24

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
440111 ncm-dbt-02 588047 6 0 4 2 -278.86 ± 222.92 1 2 0 0 0 -1199.83 ± 276.48
440110 ncm-dbt-05 581028 8 0 4 4 -190.56 ± 13.88 0 4 0 0 0 -1199.83 ± 250.99
440109 ncm-dbt-01 586223 486 13 228 245 -165.1 ± 10.57 5 206 31 1 0 -455.03 ± 63.34
440108 ncm-dbt-03 584076 500 23 243 234 -164.07 ± 12.0 9 205 33 3 0 -429.05 ± 60.97
440107 ncm-dbt-04 563314 500 18 252 230 -176.32 ± 12.46 17 201 31 1 0 -460.32 ± 63.35
440106 ncm-dbt-02 587919 500 16 253 231 -179.0 ± 12.47 19 199 32 0 0 -466.03 ± 62.14
440105 ncm-dbt-05 580199 500 22 252 226 -172.78 ± 12.98 19 192 39 0 0 -429.05 ± 55.79
440104 ncm-dbt-01 582819 500 15 248 237 -175.43 ± 10.71 11 211 28 0 0 -490.7 ± 66.89
440103 ncm-dbt-03 586266 500 26 255 219 -171.9 ± 11.6 11 209 28 2 0 -466.04 ± 66.79
440102 ncm-dbt-04 570829 500 23 256 221 -175.43 ± 13.01 20 193 37 0 0 -438.94 ± 57.41
440101 ncm-dbt-05 578465 500 19 261 220 -183.51 ± 13.05 22 199 28 1 0 -477.99 ± 66.98
440100 ncm-dbt-02 587240 500 16 254 230 -179.9 ± 12.39 18 203 28 1 0 -477.99 ± 66.98
440099 ncm-dbt-01 582318 500 27 251 222 -167.53 ± 12.91 15 196 37 2 0 -419.61 ± 57.55
440098 ncm-dbt-04 567601 500 24 249 227 -168.4 ± 11.9 13 199 38 0 0 -433.93 ± 56.58
440097 ncm-dbt-03 586012 500 14 248 238 -176.32 ± 12.94 20 194 36 0 0 -444.08 ± 58.27
440096 ncm-dbt-02 582903 500 15 245 240 -172.78 ± 11.52 13 204 33 0 0 -460.31 ± 61.1
440095 ncm-dbt-05 582110 500 23 250 227 -170.15 ± 13.18 16 198 33 3 0 -429.05 ± 60.97
440094 ncm-dbt-01 583656 500 22 247 231 -168.4 ± 13.07 16 195 37 2 0 -419.61 ± 57.55
440093 ncm-dbt-04 566178 500 23 259 218 -178.11 ± 13.27 21 195 33 1 0 -449.35 ± 61.23
440092 ncm-dbt-02 587240 500 20 241 239 -164.93 ± 12.41 11 202 34 3 0 -424.28 ± 60.03
440091 ncm-dbt-03 583531 500 18 243 239 -168.4 ± 11.14 10 205 35 0 0 -449.34 ± 59.17
440090 ncm-dbt-05 582152 500 20 248 232 -171.02 ± 13.11 16 199 32 3 0 -433.94 ± 61.95
440089 ncm-dbt-01 581444 500 26 251 223 -168.4 ± 12.85 15 197 36 2 0 -424.28 ± 58.4
440088 ncm-dbt-03 585970 500 21 248 231 -170.15 ± 13.18 17 195 36 2 0 -424.28 ± 58.4
440087 ncm-dbt-04 568474 500 22 242 236 -164.07 ± 12.23 11 200 37 2 0 -419.61 ± 57.55
440086 ncm-dbt-02 587367 500 25 243 232 -162.35 ± 11.15 8 202 40 0 0 -424.27 ± 55.03
440085 ncm-dbt-05 579537 500 19 254 227 -177.21 ± 12.63 18 200 31 1 0 -460.32 ± 63.35
440084 ncm-dbt-04 570829 500 23 249 228 -169.27 ± 13.24 17 194 37 2 0 -419.61 ± 57.55
440083 ncm-dbt-01 584076 500 14 248 238 -176.32 ± 12.46 17 201 31 1 0 -460.32 ± 63.35
440082 ncm-dbt-03 584832 500 20 257 223 -179.0 ± 12.72 19 200 30 1 0 -466.04 ± 64.5
440081 ncm-dbt-02 587070 500 23 251 226 -171.02 ± 13.11 17 196 35 2 0 -429.05 ± 59.28
440080 ncm-dbt-05 582277 500 17 253 230 -178.11 ± 13.5 22 193 34 1 0 -444.09 ± 60.25
440079 ncm-dbt-04 565430 500 14 256 230 -183.51 ± 12.8 21 201 27 1 0 -484.25 ± 68.34
440078 ncm-dbt-03 587877 500 16 252 232 -178.11 ± 11.53 15 206 29 0 0 -484.24 ± 65.6
440077 ncm-dbt-02 586393 500 20 257 223 -179.0 ± 13.43 23 191 36 0 0 -444.08 ± 58.27
440076 ncm-dbt-01 582569 500 22 249 229 -170.15 ± 12.72 16 196 37 1 0 -429.05 ± 57.55
440075 ncm-dbt-05 582360 500 16 247 237 -173.66 ± 12.92 17 199 32 2 0 -444.09 ± 62.18
440074 ncm-dbt-04 567403 500 16 258 226 -183.51 ± 12.55 20 203 26 1 0 -490.71 ± 69.77
440073 ncm-dbt-03 583363 500 38 241 221 -149.68 ± 12.87 10 185 53 2 0 -356.21 ± 47.52
440072 ncm-dbt-02 584159 500 23 243 234 -164.07 ± 13.56 16 191 40 3 0 -397.72 ± 55.14
440071 ncm-dbt-05 582193 500 27 240 233 -158.08 ± 13.06 12 192 43 3 0 -385.59 ± 53.09
440070 ncm-dbt-01 582235 500 18 248 234 -172.78 ± 11.78 12 208 28 2 0 -466.04 ± 66.79

Commit

Commit ID 34f67c57223d73ad40d583ccc033c75eb0df2453
Author Joost VandeVondele
Date 2020-08-22 09:00:45 UTC
Explicitly rely on pthreads if possible allows us to set the needed stacksize on thread creation. Useful for environments with too small a default stack size (e.g. Alpine Linux with musl). Passed STC, no regression: LLR: 2.96 (-2.94,2.94) {-1.25,0.25} Total: 17816 W: 1344 L: 1275 D: 15197 Ptnml(0-2): 30, 1057, 6682, 1092, 47 https://tests.stockfishchess.org/tests/view/5f402b5587a5c3c63d8f534d closes https://github.com/official-stockfish/Stockfish/pull/3047 fixes https://github.com/official-stockfish/Stockfish/issues/3041 No functional change.
Copyright 2011–2025 Next Chess Move LLC