Dev Builds » 20250213-1844

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 06:47:58 581856 4010 1611 550 1849 +94.17 ± 4.85 0 86 789 1113 17 +200.57 ± 12.09
ncm-dbt-02 06:48:14 587535 4000 1563 529 1908 +91.9 ± 4.9 2 84 813 1080 21 +194.34 ± 11.9
ncm-dbt-03 06:46:25 586377 4000 1579 522 1899 +94.04 ± 4.9 3 74 812 1085 26 +198.82 ± 11.89
ncm-dbt-04 06:46:46 570191 4000 1581 539 1880 +92.64 ± 4.99 0 103 772 1105 20 +195.98 ± 12.25
ncm-dbt-05 06:48:26 585478 3990 1546 544 1900 +89.16 ± 5.06 3 110 781 1084 17 +188.65 ± 12.18
20000 7880 2684 9436 +92.38 ± 2.21 8 457 3967 5467 101 +195.65 ± 5.39

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
400128 ncm-dbt-01 585000 10 4 1 5 +107.47 ± 143.78 0 1 0 4 0 +240.76 ± 617.56
400127 ncm-dbt-05 588430 490 180 71 239 +78.6 ± 15.24 0 22 94 127 2 +162.67 ± 35.26
400126 ncm-dbt-02 584159 500 191 65 244 +89.48 ± 13.53 0 11 103 135 1 +190.85 ± 33.57
400125 ncm-dbt-04 569390 500 196 64 240 +93.95 ± 14.53 0 16 88 144 2 +200.24 ± 36.52
400124 ncm-dbt-03 589368 500 197 63 240 +95.44 ± 13.31 0 8 102 138 2 +204.07 ± 33.61
400123 ncm-dbt-01 583321 500 197 72 231 +88.74 ± 14.13 0 15 96 138 1 +189.0 ± 34.95
400122 ncm-dbt-05 584579 500 190 64 246 +89.48 ± 14.44 1 13 97 137 2 +190.85 ± 34.75
400121 ncm-dbt-02 586943 500 188 66 246 +86.52 ± 14.81 0 16 101 128 5 +176.33 ± 34.04
400120 ncm-dbt-03 586858 500 191 62 247 +91.71 ± 13.42 0 7 111 128 4 +190.85 ± 31.92
400119 ncm-dbt-04 569789 500 200 55 245 +103.73 ± 12.88 0 5 97 146 2 +226.0 ± 34.38
400118 ncm-dbt-01 584159 500 199 67 234 +93.95 ± 13.92 0 11 99 137 3 +198.34 ± 34.31
400117 ncm-dbt-02 588174 500 203 65 232 +98.44 ± 13.18 0 8 97 144 1 +213.85 ± 34.58
400116 ncm-dbt-05 582027 500 200 68 232 +93.95 ± 14.23 0 14 92 142 2 +200.24 ± 35.72
400115 ncm-dbt-03 586646 500 201 86 213 +81.37 ± 13.96 1 9 118 118 4 +167.53 ± 30.96
400114 ncm-dbt-04 569190 500 197 67 236 +92.45 ± 13.74 0 11 100 137 2 +196.45 ± 34.12
400113 ncm-dbt-01 582987 500 201 75 224 +89.48 ± 13.53 0 10 106 132 2 +189.0 ± 32.98
400112 ncm-dbt-02 588984 500 190 68 242 +86.52 ± 13.93 1 9 110 127 3 +181.7 ± 32.28
400111 ncm-dbt-04 571351 500 210 75 215 +96.19 ± 14.26 0 12 95 139 4 +202.15 ± 35.11
400110 ncm-dbt-05 587792 500 209 59 232 +107.54 ± 13.89 0 10 83 154 3 +234.38 ± 37.67
400109 ncm-dbt-03 586266 500 204 61 235 +102.22 ± 14.48 0 11 91 142 6 +213.85 ± 35.9
400108 ncm-dbt-01 581319 500 210 66 224 +102.97 ± 13.54 0 9 90 149 2 +223.94 ± 36.07
400107 ncm-dbt-02 588430 500 188 63 249 +88.74 ± 13.98 0 11 107 128 4 +183.51 ± 32.85
400106 ncm-dbt-04 571672 500 195 68 237 +90.22 ± 14.01 0 13 99 136 2 +190.85 ± 34.36
400105 ncm-dbt-03 586393 500 199 54 247 +103.73 ± 13.71 0 10 87 151 2 +226.0 ± 36.75
400104 ncm-dbt-01 583782 500 203 76 221 +90.22 ± 13.86 0 11 104 132 3 +189.0 ± 33.39
400103 ncm-dbt-05 586435 500 187 73 240 +80.63 ± 13.94 0 14 110 124 2 +167.53 ± 32.45
400102 ncm-dbt-01 573244 500 207 69 224 +98.44 ± 13.82 0 10 95 142 3 +209.91 ± 35.06
400101 ncm-dbt-03 584916 500 199 72 229 +90.22 ± 14.46 2 10 99 137 2 +194.57 ± 34.34
400100 ncm-dbt-04 572034 500 197 73 230 +88.0 ± 14.99 0 17 97 131 5 +179.9 ± 34.76
400099 ncm-dbt-02 586689 500 194 59 247 +96.19 ± 13.48 0 10 96 143 1 +207.95 ± 34.86
400098 ncm-dbt-05 585253 500 187 56 257 +93.2 ± 13.6 1 9 98 142 0 +204.07 ± 34.47
400097 ncm-dbt-03 582611 500 195 62 243 +94.69 ± 13.78 0 11 97 140 2 +202.15 ± 34.7
400096 ncm-dbt-02 587579 500 209 71 220 +98.44 ± 13.98 1 7 99 139 4 +209.91 ± 34.19
400095 ncm-dbt-04 568514 500 197 67 236 +92.45 ± 13.9 0 12 98 138 2 +196.45 ± 34.53
400094 ncm-dbt-01 582861 500 199 58 243 +100.7 ± 13.03 0 6 99 143 2 +217.85 ± 34.06
400093 ncm-dbt-05 581985 500 194 86 220 +76.25 ± 14.81 1 16 111 118 4 +155.54 ± 32.36
400092 ncm-dbt-03 587962 500 193 62 245 +93.2 ± 13.6 0 8 107 131 4 +194.57 ± 32.69
400091 ncm-dbt-04 569589 500 189 70 241 +84.3 ± 14.33 0 17 98 134 1 +178.11 ± 34.58
400090 ncm-dbt-02 589326 500 200 72 228 +90.96 ± 13.87 0 12 100 136 2 +192.71 ± 34.15
400089 ncm-dbt-05 587325 500 199 67 234 +93.95 ± 13.92 0 12 96 140 2 +200.24 ± 34.91
400088 ncm-dbt-01 580033 500 191 66 243 +88.74 ± 13.83 0 13 100 136 1 +189.0 ± 34.18

Commit

Commit ID e089f723d87e18dc15c95a4628a65db62f44ed9c
Author Carlos Esparza
Date 2025-02-13 18:44:53 UTC
Remove two xors by setting the hash keys for unreachable squares to zero performance before: 3.6714 +- 0.20% Gcycles 3.6620 +- 0.12% Gcycles 3.6704 +- 0.26% Gcycles 3.6602 +- 0.27% Gcycles 3.6799 +- 0.37% Gcycles after: 3.6540 +- 0.30% Gcycles 3.6388 +- 0.25% Gcycles 3.6557 +- 0.17% Gcycles 3.6449 +- 0.15% Gcycles 3.6460 +- 0.26% Gcycles (every line is a different `profile-build` and shows the number of cycles needed for `./stockfish bench`, measured with `perf stat -r 10`) closes https://github.com/official-stockfish/Stockfish/pull/5754 No functional change
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