Dev Builds » 20150223-1848

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 05:58:31 1986500 2375 173 656 1546 -71.66 +/- 8.09
ncm-et-4 05:58:15 1963667 2337 170 558 1609 -58.22 +/- 7.72
ncm-et-5 01:46:24 2022793 726 54 152 520 -47.19 +/- 13.27
ncm-et-6 01:46:26 2024427 714 58 182 474 -60.96 +/- 14.54
ncm-et-7 01:46:00 2012401 712 50 186 476 -67.19 +/- 14.39
ncm-et-8 01:46:27 2024264 728 52 174 502 -58.78 +/- 13.81
ncm-et-9 05:59:14 1986936 2403 167 579 1657 -60.16 +/- 7.59
ncm-et-10 05:58:56 1980758 2342 186 585 1571 -59.77 +/- 7.94
ncm-et-11 01:46:29 1992200 713 47 188 478 -69.62 +/- 14.31
ncm-et-12 01:46:22 2006593 703 42 179 482 -68.59 +/- 14.04
ncm-et-13 05:58:56 1992427 2393 171 604 1618 -63.57 +/- 7.77
ncm-et-14 01:46:30 2020266 724 53 164 507 -53.69 +/- 13.63
ncm-et-15 05:59:06 1986019 2422 185 584 1653 -57.76 +/- 7.67
ncm-et-16 01:46:24 2020350 708 42 190 476 -73.71 +/- 14.27
20000 1450 4981 13569 -61.99 +/- 2.68

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
78446 ncm-et-4 2019-04-20 15:59 00:21:00 1946847 137 7 37 93 -77.33 +/- 32.05
78445 ncm-et-10 2019-04-20 15:58 00:22:12 1955872 138 16 43 79 -68.86 +/- 37.77
78444 ncm-et-3 2019-04-20 15:54 00:25:31 1966614 165 8 59 98 -111.02 +/- 32.79
78443 ncm-et-13 2019-04-20 15:54 00:26:16 1970792 170 17 31 122 -28.68 +/- 27.66
78442 ncm-et-9 2019-04-20 15:52 00:27:36 1963993 182 12 49 121 -71.63 +/- 28.61
78441 ncm-et-15 2019-04-20 15:49 00:31:08 1974050 208 18 39 151 -35.2 +/- 24.54
78440 ncm-et-4 2019-04-20 14:41 01:16:50 1934380 500 43 101 356 -40.48 +/- 16.19
78439 ncm-et-10 2019-04-20 14:41 01:15:50 1963854 500 34 127 339 -65.38 +/- 16.93
78438 ncm-et-3 2019-04-20 14:38 01:15:11 1969401 500 33 123 344 -63.23 +/- 16.66
78437 ncm-et-13 2019-04-20 14:36 01:16:25 1982233 500 25 123 352 -68.99 +/- 16.09
78436 ncm-et-9 2019-04-20 14:36 01:15:38 1959695 500 38 130 332 -64.66 +/- 17.34
78435 ncm-et-15 2019-04-20 14:33 01:14:19 1965379 500 30 113 357 -58.21 +/- 15.93
78434 ncm-et-10 2019-04-20 13:22 01:17:25 1963687 500 32 126 342 -66.1 +/- 16.74
78433 ncm-et-4 2019-04-20 13:21 01:19:00 1947314 500 36 133 331 -68.27 +/- 17.36
78432 ncm-et-3 2019-04-20 13:21 01:16:17 1965073 500 40 136 324 -67.55 +/- 17.77
78431 ncm-et-13 2019-04-20 13:20 01:15:30 1975618 500 32 133 335 -71.16 +/- 17.09
78430 ncm-et-9 2019-04-20 13:19 01:15:26 1972028 500 36 117 347 -56.78 +/- 16.56
78429 ncm-et-15 2019-04-20 13:18 01:14:30 1969419 500 47 120 333 -51.09 +/- 17.42
78428 ncm-et-4 2019-04-20 12:05 01:15:07 1963536 500 44 127 329 -58.21 +/- 17.58
78427 ncm-et-10 2019-04-20 12:04 01:16:58 1960928 500 39 134 327 -66.82 +/- 17.6
78426 ncm-et-13 2019-04-20 12:04 01:14:21 1979192 500 37 132 331 -66.82 +/- 17.38
78425 ncm-et-3 2019-04-20 12:04 01:15:31 1964148 500 38 134 328 -67.55 +/- 17.54
78424 ncm-et-15 2019-04-20 12:04 01:12:38 1970802 500 35 119 346 -58.93 +/- 16.59
78423 ncm-et-9 2019-04-20 12:04 01:13:58 1973119 500 27 120 353 -65.38 +/- 16.08
16192 ncm-et-10 2018-04-06 23:43 00:30:08 2020838 204 17 47 140 -51.47 +/- 26.39
16191 ncm-et-12 2018-04-06 23:43 00:30:22 1994303 203 14 58 131 -76.52 +/- 27.89
16190 ncm-et-16 2018-04-06 23:42 00:30:40 2021815 208 12 49 147 -62.47 +/- 24.99
16189 ncm-et-3 2018-04-06 23:42 00:31:26 2026718 210 12 63 135 -86.1 +/- 27.33
16188 ncm-et-4 2018-04-06 23:42 00:31:22 2024100 200 13 42 145 -50.74 +/- 24.83
16187 ncm-et-11 2018-04-06 23:42 00:31:42 1989754 213 13 61 139 -79.66 +/- 26.83
16186 ncm-et-7 2018-04-06 23:41 00:31:49 1996935 212 15 51 146 -59.58 +/- 25.65
16185 ncm-et-6 2018-04-06 23:41 00:32:17 2025081 214 15 51 148 -59.01 +/- 25.4
16184 ncm-et-14 2018-04-06 23:41 00:32:43 2020673 224 18 55 151 -57.92 +/- 25.61
16183 ncm-et-15 2018-04-06 23:40 00:32:44 2019046 214 20 53 141 -54.01 +/- 26.92
16182 ncm-et-8 2018-04-06 23:40 00:32:53 2022793 228 18 49 161 -47.53 +/- 24.15
16181 ncm-et-5 2018-04-06 23:40 00:33:12 2023121 226 19 45 162 -40.15 +/- 23.89
16180 ncm-et-13 2018-04-06 23:40 00:33:18 2023119 223 18 58 147 -63.0 +/- 26.23
16179 ncm-et-9 2018-04-06 23:39 00:34:00 2026390 221 22 50 149 -44.26 +/- 25.96
16178 ncm-et-7 2018-04-06 22:26 01:14:11 2027868 500 35 135 330 -70.44 +/- 17.39
16177 ncm-et-3 2018-04-06 22:26 01:14:35 2027046 500 42 141 317 -69.71 +/- 18.14
16176 ncm-et-6 2018-04-06 22:26 01:14:09 2023773 500 43 131 326 -61.79 +/- 17.71
16175 ncm-et-13 2018-04-06 22:26 01:13:06 2023609 500 42 127 331 -59.64 +/- 17.45
16174 ncm-et-4 2018-04-06 22:26 01:14:56 1965827 500 27 118 355 -63.95 +/- 15.98
16173 ncm-et-10 2018-04-06 22:26 01:16:23 2019371 500 48 108 344 -41.89 +/- 16.87
16172 ncm-et-14 2018-04-06 22:26 01:13:47 2019859 500 35 109 356 -51.8 +/- 16.07
16171 ncm-et-5 2018-04-06 22:26 01:13:12 2022466 500 35 107 358 -50.38 +/- 15.97
16170 ncm-et-16 2018-04-06 22:26 01:15:44 2018885 500 30 141 329 -78.44 +/- 17.35
16169 ncm-et-11 2018-04-06 22:26 01:14:47 1994646 500 34 127 339 -65.38 +/- 16.93
16168 ncm-et-12 2018-04-06 22:26 01:16:00 2018883 500 28 121 351 -65.38 +/- 16.2
16167 ncm-et-8 2018-04-06 22:26 01:13:34 2025736 500 34 125 341 -63.95 +/- 16.83
16166 ncm-et-15 2018-04-06 22:26 01:13:47 2017422 500 35 140 325 -74.06 +/- 17.64
16165 ncm-et-9 2018-04-06 22:26 01:12:36 2026393 500 32 113 355 -56.78 +/- 16.07

Commit

Commit ID d3d26a94b3e501459a610b8d730394125c9afd45
Author Marco Costalba
Date 2015-02-23 18:48:46 UTC
Improve spinlock implementation Calling lock.test_and_set() in a tight loop creates expensive memory synchronizations among processors and penalize other running threads. So syncronize only only once at the beginning with fetch_sub() and then loop on a simple load() that puts much less pressure on the system. Reported about 2-3% speed up on various systems. Patch by Ronald de Man. No functional change.
Copyright 2011–2024 Next Chess Move LLC