Dev Builds » 20190926-2216

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 08:28:51 1975162 3328 2004 54 1270 +233.29 +/- 9.43
ncm-et-4 08:27:16 1972478 3324 2024 61 1239 +235.74 +/- 9.58
ncm-et-9 08:29:33 1973094 3345 2013 70 1262 +230.62 +/- 9.5
ncm-et-10 08:25:08 1963197 3291 1978 64 1249 +230.99 +/- 9.53
ncm-et-13 08:29:08 1975668 3363 2043 72 1248 +233.37 +/- 9.56
ncm-et-15 08:28:02 1975186 3349 2030 46 1273 +236.74 +/- 9.41
20000 12092 367 7541 +233.45 +/- 3.88

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
97636 ncm-et-10 2019-09-27 07:25 00:44:53 1970522 291 182 6 103 +243.45 +/- 33.54
97635 ncm-et-4 2019-09-27 07:22 00:48:00 1978118 324 191 10 123 +219.18 +/- 30.69
97634 ncm-et-3 2019-09-27 07:19 00:50:58 1972974 328 192 4 132 +226.61 +/- 29.18
97633 ncm-et-9 2019-09-27 07:17 00:52:59 1965845 345 216 8 121 +242.4 +/- 30.96
97632 ncm-et-15 2019-09-27 07:17 00:53:16 1968319 349 201 2 146 +225.08 +/- 27.47
97631 ncm-et-13 2019-09-27 07:15 00:55:12 1973429 363 215 5 143 +229.39 +/- 28.11
97630 ncm-et-10 2019-09-27 06:06 01:18:14 1957715 500 303 9 188 +234.38 +/- 24.64
97629 ncm-et-4 2019-09-27 06:04 01:16:49 1967697 500 290 11 199 +218.86 +/- 23.91
97628 ncm-et-3 2019-09-27 06:02 01:16:29 1979190 500 306 13 181 +233.32 +/- 25.26
97627 ncm-et-9 2019-09-27 06:01 01:15:11 1982512 500 269 12 219 +197.4 +/- 22.64
97626 ncm-et-15 2019-09-27 06:01 01:14:59 1976445 500 317 6 177 +253.02 +/- 25.38
97625 ncm-et-13 2019-09-27 05:59 01:14:54 1972665 500 309 11 180 +238.66 +/- 25.3
97624 ncm-et-10 2019-09-27 04:49 01:15:54 1966150 500 301 10 189 +231.21 +/- 24.59
97623 ncm-et-4 2019-09-27 04:47 01:16:15 1979506 500 304 9 187 +235.45 +/- 24.71
97622 ncm-et-3 2019-09-27 04:45 01:15:38 1966948 500 299 6 195 +233.32 +/- 24.03
97621 ncm-et-9 2019-09-27 04:44 01:15:29 1970337 500 305 12 183 +233.32 +/- 25.09
97620 ncm-et-15 2019-09-27 04:44 01:15:26 1985845 500 302 5 193 +237.58 +/- 24.13
97619 ncm-et-13 2019-09-27 04:43 01:15:29 1978262 500 285 12 203 +212.86 +/- 23.67
97618 ncm-et-4 2019-09-27 03:30 01:15:35 1970372 500 301 9 190 +232.26 +/- 24.49
97617 ncm-et-10 2019-09-27 03:30 01:18:04 1950665 500 287 10 203 +216.85 +/- 23.61
97616 ncm-et-3 2019-09-27 03:27 01:17:12 1989173 500 292 7 201 +224.97 +/- 23.65
97615 ncm-et-15 2019-09-27 03:27 01:16:13 1976416 500 312 8 180 +245.2 +/- 25.21
97614 ncm-et-9 2019-09-27 03:27 01:16:39 1969730 500 293 9 198 +223.94 +/- 23.92
97613 ncm-et-13 2019-09-27 03:26 01:15:47 1960461 500 311 13 176 +238.66 +/- 25.65
97612 ncm-et-10 2019-09-27 02:13 01:16:10 1967643 500 279 9 212 +209.91 +/- 22.99
97611 ncm-et-4 2019-09-27 02:12 01:17:04 1969269 500 304 6 190 +238.66 +/- 24.39
97610 ncm-et-15 2019-09-27 02:10 01:15:52 1980321 500 295 7 198 +228.08 +/- 23.85
97609 ncm-et-9 2019-09-27 02:10 01:16:06 1973439 500 322 9 169 +255.3 +/- 26.13
97608 ncm-et-3 2019-09-27 02:09 01:16:46 1968951 500 296 10 194 +226.0 +/- 24.23
97607 ncm-et-13 2019-09-27 02:08 01:16:10 1976696 500 304 12 184 +232.26 +/- 25.02
97606 ncm-et-10 2019-09-27 00:56 01:15:41 1964461 500 324 11 165 +255.3 +/- 26.52
97605 ncm-et-4 2019-09-27 00:54 01:17:07 1968945 500 302 9 189 +233.32 +/- 24.56
97604 ncm-et-15 2019-09-27 00:53 01:16:07 1971718 500 304 8 188 +236.51 +/- 24.61
97603 ncm-et-13 2019-09-27 00:52 01:15:03 1985264 500 317 7 176 +251.89 +/- 25.5
97602 ncm-et-9 2019-09-27 00:52 01:16:21 1981762 500 302 8 190 +234.38 +/- 24.46
97601 ncm-et-3 2019-09-27 00:52 01:16:16 1971735 500 316 3 181 +255.3 +/- 24.94
97600 ncm-et-10 2019-09-26 23:39 01:16:12 1965225 500 302 9 189 +233.32 +/- 24.56
97599 ncm-et-4 2019-09-26 23:37 01:16:26 1973440 500 332 7 161 +269.37 +/- 26.77
97598 ncm-et-15 2019-09-26 23:36 01:16:09 1967244 500 299 10 191 +229.12 +/- 24.45
97597 ncm-et-3 2019-09-26 23:35 01:15:32 1977165 500 303 11 186 +232.26 +/- 24.84
97596 ncm-et-13 2019-09-26 23:35 01:16:33 1982899 500 302 12 186 +230.16 +/- 24.87
97595 ncm-et-9 2019-09-26 23:34 01:16:48 1968033 500 306 12 182 +234.38 +/- 25.17

Commit

Commit ID d703d2b5e760edf4d34b6664f2d0552ffe424b12
Author Joost VandeVondele
Date 2019-09-26 22:16:49 UTC
Remove custom mutex implementation As part of the investigation of the hang caused by an incorrect implementation of condition_variable in libwinpthread, it was realized that our custom Mutex implementation is no longer needed. Prior to lazySMP this custom implementation resulted in a 30% speedup, but now no speed difference can be measured as no mutex is used on the hot path in lazySMP. https://github.com/official-stockfish/Stockfish/issues/2291 https://github.com/official-stockfish/Stockfish/issues/2309#issuecomment-533733393 https://github.com/official-stockfish/Stockfish/issues/2309#issuecomment-533737515 The interest of this patch is that it removes platform-specific code, which is always less tested. No functional change.
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