Dev Builds » 20140208-1207

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 7. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games Wins Losses Draws Elo
ncm-et-3 06:35:33 1993511 2677 149 1124 1404 -132.63 +/- 8.89
ncm-et-4 06:34:52 1982277 2661 152 1139 1370 -135.32 +/- 9.03
ncm-et-5 01:45:03 2024018 734 57 318 359 -129.18 +/- 17.86
ncm-et-6 01:44:57 2026801 721 37 302 382 -133.96 +/- 16.99
ncm-et-7 01:45:09 1975585 722 48 298 376 -125.49 +/- 17.28
ncm-et-8 01:44:56 1971952 688 40 293 355 -134.04 +/- 17.75
ncm-et-9 02:22:17 2004401 968 63 403 502 -127.46 +/- 14.95
ncm-et-10 06:35:19 1985174 2659 176 1076 1407 -122.42 +/- 8.91
ncm-et-11 01:44:48 2002417 714 41 305 368 -134.85 +/- 17.43
ncm-et-12 01:45:11 1984467 723 51 311 361 -130.79 +/- 17.75
ncm-et-13 06:35:01 1989748 2668 165 1127 1376 -131.17 +/- 9.02
ncm-et-14 01:45:09 2019126 706 28 305 373 -144.04 +/- 17.09
ncm-et-15 06:35:35 1982530 2655 154 1108 1393 -130.67 +/- 8.93
ncm-et-16 01:44:56 2013906 704 34 280 390 -126.74 +/- 16.66
20000 1195 8389 10416 -130.82 +/- 3.27

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
96025 ncm-et-13 2019-09-14 01:53 00:37:02 1985810 244 12 98 134 -127.94 +/- 28.54
96024 ncm-et-9 2019-09-14 01:53 00:37:12 1966312 255 18 102 135 -118.88 +/- 28.87
96023 ncm-et-15 2019-09-14 01:53 00:37:17 1968006 247 12 112 123 -149.2 +/- 30.25
96022 ncm-et-10 2019-09-14 01:53 00:37:09 1966479 247 15 93 139 -113.6 +/- 28.04
96021 ncm-et-3 2019-09-14 01:53 00:37:27 1976543 251 8 113 130 -154.84 +/- 28.97
96020 ncm-et-4 2019-09-14 01:53 00:37:10 1976718 260 13 122 125 -155.22 +/- 30.14
95449 ncm-et-4 2019-09-09 02:25 00:28:36 1965073 191 15 82 94 -127.28 +/- 35.02
95448 ncm-et-15 2019-09-09 02:25 00:28:44 1965849 188 13 79 96 -127.39 +/- 34.43
95447 ncm-et-10 2019-09-09 02:24 00:29:33 1967404 199 11 75 113 -115.85 +/- 30.98
95446 ncm-et-3 2019-09-09 02:23 00:30:27 1985229 205 16 90 99 -131.33 +/- 34.16
95445 ncm-et-13 2019-09-09 02:22 00:31:29 1976537 213 19 96 98 -131.54 +/- 34.49
95444 ncm-et-10 2019-09-09 01:09 01:14:10 1970922 500 42 213 245 -123.81 +/- 21.66
95443 ncm-et-15 2019-09-09 01:09 01:15:01 1967543 500 34 210 256 -127.76 +/- 21.01
95442 ncm-et-4 2019-09-09 01:08 01:16:00 1994945 500 36 222 242 -135.76 +/- 21.76
95441 ncm-et-3 2019-09-09 01:08 01:14:22 1974988 500 29 203 268 -126.18 +/- 20.32
95440 ncm-et-13 2019-09-09 01:07 01:13:57 1976077 500 20 214 266 -142.26 +/- 20.23
95439 ncm-et-3 2019-09-08 23:53 01:13:34 1980331 500 27 212 261 -134.95 +/- 20.64
95438 ncm-et-4 2019-09-08 23:53 01:14:02 1968008 500 30 195 275 -119.11 +/- 19.99
95437 ncm-et-10 2019-09-08 23:53 01:15:20 1965707 500 33 200 267 -120.67 +/- 20.44
95436 ncm-et-15 2019-09-08 23:53 01:15:26 1965862 500 29 206 265 -128.55 +/- 20.47
95435 ncm-et-13 2019-09-08 23:52 01:14:50 1967552 500 44 197 259 -109.83 +/- 20.97
95434 ncm-et-15 2019-09-08 22:38 01:13:52 1972033 500 33 202 265 -122.24 +/- 20.54
95433 ncm-et-3 2019-09-08 22:38 01:14:46 1985036 500 28 204 268 -127.76 +/- 20.3
95432 ncm-et-4 2019-09-08 22:38 01:14:30 1969098 500 26 215 259 -138.18 +/- 20.73
95431 ncm-et-10 2019-09-08 22:38 01:14:07 1985982 500 34 187 279 -109.83 +/- 19.86
95430 ncm-et-13 2019-09-08 22:38 01:12:54 1971446 500 29 209 262 -130.94 +/- 20.63
27164 ncm-et-8 2018-05-07 06:30 00:27:52 2013395 188 13 84 91 -138.05 +/- 35.57
27163 ncm-et-14 2018-05-07 06:28 00:30:18 2019208 206 6 88 112 -146.39 +/- 30.89
27162 ncm-et-13 2018-05-07 06:27 00:30:35 2025899 211 13 93 105 -138.65 +/- 32.93
27161 ncm-et-16 2018-05-07 06:27 00:31:17 2020510 204 9 80 115 -126.19 +/- 30.56
27160 ncm-et-11 2018-05-07 06:26 00:31:25 2019860 214 10 93 111 -142.19 +/- 31.64
27159 ncm-et-3 2018-05-07 06:26 00:31:39 2025572 221 16 85 120 -112.22 +/- 30.53
27158 ncm-et-15 2018-05-07 06:26 00:32:00 2019046 220 7 90 123 -137.89 +/- 29.35
27157 ncm-et-4 2018-05-07 06:26 00:31:40 1978488 210 8 88 114 -139.38 +/- 30.82
27156 ncm-et-6 2018-05-07 06:26 00:31:53 2025900 221 14 96 111 -135.37 +/- 32.0
27155 ncm-et-12 2018-05-07 06:25 00:32:25 2009298 223 15 100 108 -139.47 +/- 32.61
27154 ncm-et-9 2018-05-07 06:25 00:32:26 2023609 213 13 89 111 -129.67 +/- 31.82
27153 ncm-et-10 2018-05-07 06:25 00:32:30 2022469 213 12 85 116 -124.1 +/- 30.84
27152 ncm-et-5 2018-05-07 06:25 00:32:46 2023120 234 16 96 122 -123.76 +/- 30.42
27151 ncm-et-7 2018-05-07 06:24 00:34:02 1925926 222 10 86 126 -123.95 +/- 29.16
27150 ncm-et-13 2018-05-07 05:12 01:14:14 2024917 500 28 220 252 -140.62 +/- 21.13
27149 ncm-et-11 2018-05-07 05:12 01:13:23 1984974 500 31 212 257 -131.74 +/- 20.91
27148 ncm-et-4 2018-05-07 05:12 01:12:54 2023611 500 24 215 261 -139.81 +/- 20.58
27147 ncm-et-16 2018-05-07 05:12 01:13:39 2007303 500 25 200 275 -126.97 +/- 19.89
27146 ncm-et-3 2018-05-07 05:12 01:13:18 2026882 500 25 217 258 -140.62 +/- 20.76
27145 ncm-et-8 2018-05-07 05:12 01:17:04 1930509 500 27 209 264 -132.54 +/- 20.49
27144 ncm-et-14 2018-05-07 05:12 01:14:51 2019045 500 22 217 261 -143.07 +/- 20.54
27143 ncm-et-10 2018-05-07 05:12 01:12:30 2017259 500 29 223 248 -142.26 +/- 21.35
27142 ncm-et-5 2018-05-07 05:12 01:12:17 2024917 500 41 222 237 -131.74 +/- 22.07
27141 ncm-et-7 2018-05-07 05:12 01:11:07 2025244 500 38 212 250 -126.18 +/- 21.37
27140 ncm-et-12 2018-05-07 05:12 01:12:46 1959637 500 36 211 253 -126.97 +/- 21.19
27139 ncm-et-9 2018-05-07 05:12 01:12:39 2023283 500 32 212 256 -130.94 +/- 20.98
27138 ncm-et-15 2018-05-07 05:12 01:13:15 2019371 500 26 209 265 -133.34 +/- 20.42
27137 ncm-et-6 2018-05-07 05:12 01:13:04 2027702 500 23 206 271 -133.34 +/- 20.05

Commit

Commit ID 0a1092f64eb9eb232094036086fc5c98ed1f3c46
Author Marco Costalba
Date 2014-02-08 12:07:57 UTC
Don't fear races when are harmless Actually race conditions do exist in an engine, just think for a moment to TT concurrent access. Racy code is not a problem per se, if the consequences are well known and correctly handled. In case of TT access we ensure that the TT move is validated before to be tried, here we just retry the same move in less that 1 case out of a million: this is totally harmless considering that very probably the second time the move is tried we get immediately a TT hit and search quickly returns. So we simplify the code for no harm. No fuctional change (in single thread case)
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