Dev Builds » 20180327-1425

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 06:03:03 2002468 2397 1091 83 1223 +155.77 +/- 9.46
ncm-et-4 06:02:35 1999164 2375 1074 81 1220 +154.75 +/- 9.45
ncm-et-5 01:48:12 1994807 711 332 17 362 +165.38 +/- 17.27
ncm-et-6 01:48:06 2025900 717 313 27 377 +146.73 +/- 17.0
ncm-et-7 01:48:16 2013048 727 337 21 369 +161.78 +/- 17.18
ncm-et-8 01:48:08 1992052 703 328 20 355 +163.26 +/- 17.52
ncm-et-9 06:02:30 2001606 2398 1100 71 1227 +159.4 +/- 9.4
ncm-et-10 06:02:31 1980338 2365 1089 78 1198 +158.71 +/- 9.55
ncm-et-11 01:48:11 2016775 715 329 20 366 +160.71 +/- 17.21
ncm-et-12 01:48:12 2003915 727 358 33 336 +167.12 +/- 18.38
ncm-et-13 06:02:34 1989117 2377 1088 64 1225 +160.12 +/- 9.38
ncm-et-14 01:48:06 2019372 714 314 17 383 +153.85 +/- 16.63
ncm-et-15 06:02:45 1976252 2367 1119 72 1176 +165.08 +/- 9.65
ncm-et-16 01:47:58 1970040 707 340 26 341 +165.85 +/- 18.09
20000 9212 630 10158 +159.4 +/- 3.28

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
52182 ncm-et-15 2018-09-02 18:37 00:23:41 1945499 153 67 6 80 +146.65 +/- 37.13
52181 ncm-et-10 2018-09-02 18:37 00:23:52 1933227 153 77 5 71 +177.48 +/- 39.95
52180 ncm-et-13 2018-09-02 18:37 00:24:22 1990665 163 81 3 79 +181.04 +/- 37.26
52179 ncm-et-9 2018-09-02 18:34 00:27:08 1991298 177 76 5 96 +147.66 +/- 33.38
52178 ncm-et-4 2018-09-02 18:34 00:27:16 1989402 176 77 5 94 +150.97 +/- 33.84
52177 ncm-et-3 2018-09-02 18:33 00:27:40 1989875 178 74 5 99 +142.11 +/- 32.68
52176 ncm-et-10 2018-09-02 17:21 01:15:21 1978097 500 233 14 253 +163.21 +/- 20.75
52175 ncm-et-15 2018-09-02 17:20 01:16:00 1982635 500 235 20 245 +159.78 +/- 21.34
52174 ncm-et-13 2018-09-02 17:18 01:17:43 1962440 500 211 19 270 +140.62 +/- 20.0
52173 ncm-et-4 2018-09-02 17:17 01:15:22 1989245 500 228 19 253 +154.7 +/- 20.89
52172 ncm-et-9 2018-09-02 17:17 01:15:53 1989086 500 229 19 252 +155.54 +/- 20.94
52171 ncm-et-3 2018-09-02 17:17 01:15:28 1992088 500 228 18 254 +155.54 +/- 20.81
52170 ncm-et-10 2018-09-02 16:02 01:17:26 1982635 500 227 18 255 +154.7 +/- 20.76
52169 ncm-et-15 2018-09-02 16:01 01:18:16 1951590 500 238 13 249 +168.4 +/- 20.94
52168 ncm-et-4 2018-09-02 16:00 01:15:47 1990190 500 225 22 253 +149.68 +/- 20.96
52167 ncm-et-13 2018-09-02 16:00 01:16:36 1971872 500 234 12 254 +165.8 +/- 20.64
52166 ncm-et-3 2018-09-02 16:00 01:15:55 1990350 500 220 16 264 +150.51 +/- 20.23
52165 ncm-et-9 2018-09-02 15:59 01:17:22 1990349 500 235 12 253 +166.66 +/- 20.69
52164 ncm-et-13 2018-09-02 14:44 01:15:40 1960874 500 233 11 256 +165.8 +/- 20.49
52163 ncm-et-4 2018-09-02 14:43 01:16:12 1988770 500 223 16 261 +153.02 +/- 20.39
52162 ncm-et-9 2018-09-02 14:43 01:14:29 1989558 500 231 13 256 +162.35 +/- 20.56
52161 ncm-et-3 2018-09-02 14:43 01:15:43 1989875 500 234 21 245 +158.08 +/- 21.37
52160 ncm-et-10 2018-09-02 14:43 01:18:17 1950463 500 216 20 264 +143.89 +/- 20.34
52159 ncm-et-15 2018-09-02 14:43 01:16:52 1941968 500 246 14 240 +174.55 +/- 21.47
12833 ncm-et-4 2018-03-28 04:48 00:30:17 2024264 199 95 4 100 +171.59 +/- 32.94
12832 ncm-et-8 2018-03-28 04:47 00:30:48 2023610 203 92 6 105 +157.08 +/- 32.22
12831 ncm-et-16 2018-03-28 04:46 00:31:25 1984710 207 106 4 97 +187.51 +/- 33.76
12830 ncm-et-5 2018-03-28 04:46 00:32:08 1993935 211 99 6 106 +164.4 +/- 32.19
12829 ncm-et-15 2018-03-28 04:46 00:32:12 2020511 214 107 7 100 +176.01 +/- 33.56
12828 ncm-et-3 2018-03-28 04:46 00:32:21 2026556 219 100 8 111 +155.58 +/- 31.58
12827 ncm-et-13 2018-03-28 04:46 00:32:20 2023609 214 103 5 106 +171.88 +/- 32.14
12826 ncm-et-14 2018-03-28 04:46 00:32:20 2018071 214 93 3 118 +155.78 +/- 29.59
12825 ncm-et-10 2018-03-28 04:45 00:32:16 2015960 212 99 5 108 +165.54 +/- 31.7
12824 ncm-et-9 2018-03-28 04:45 00:32:39 2024592 221 99 7 115 +153.98 +/- 30.79
12823 ncm-et-11 2018-03-28 04:45 00:32:58 2019533 215 97 6 112 +156.92 +/- 31.11
12822 ncm-et-6 2018-03-28 04:45 00:33:21 2025409 217 90 6 121 +141.89 +/- 29.51
12821 ncm-et-12 2018-03-28 04:44 00:33:47 2018233 227 117 9 101 +179.8 +/- 33.67
12820 ncm-et-7 2018-03-28 04:44 00:34:25 2026064 227 106 4 117 +168.11 +/- 30.23
12819 ncm-et-9 2018-03-28 03:29 01:14:59 2024754 500 230 15 255 +159.78 +/- 20.67
12818 ncm-et-10 2018-03-28 03:29 01:15:19 2021651 500 237 16 247 +164.93 +/- 21.14
12817 ncm-et-15 2018-03-28 03:29 01:15:44 2015312 500 226 12 262 +158.93 +/- 20.21
12816 ncm-et-4 2018-03-28 03:29 01:17:41 2013114 500 226 15 259 +156.39 +/- 20.46
12815 ncm-et-14 2018-03-28 03:29 01:15:46 2020673 500 221 14 265 +153.02 +/- 20.12
12814 ncm-et-6 2018-03-28 03:29 01:14:45 2026391 500 223 21 256 +148.85 +/- 20.78
12813 ncm-et-11 2018-03-28 03:29 01:15:13 2014018 500 232 14 254 +162.35 +/- 20.7
12812 ncm-et-8 2018-03-28 03:29 01:17:20 1960495 500 236 14 250 +165.8 +/- 20.91
12811 ncm-et-12 2018-03-28 03:29 01:14:25 1989597 500 241 24 235 +161.49 +/- 21.98
12810 ncm-et-13 2018-03-28 03:29 01:15:53 2025244 500 226 14 260 +157.24 +/- 20.38
12809 ncm-et-16 2018-03-28 03:29 01:16:33 1955371 500 234 22 244 +157.24 +/- 21.44
12808 ncm-et-5 2018-03-28 03:29 01:16:04 1995680 500 233 11 256 +165.8 +/- 20.49
12807 ncm-et-7 2018-03-28 03:29 01:13:51 2000033 500 231 17 252 +158.93 +/- 20.89
12806 ncm-et-3 2018-03-28 03:29 01:15:56 2026064 500 235 15 250 +164.07 +/- 20.94

Commit

Commit ID a03e98dcd33c91c47e4a06282bfb582e582671b7
Author Stéphane Nicolet
Date 2018-03-27 14:25:41 UTC
Switch time management to 64 bits This is a patch to fix issue #1498, switching the time management variables to 64 bits to avoid overflow of time variables after 25 days. There was a bug in Stockfish 9 causing the output to be wrong after 2^31 milliseconds search. Here is a long run from the starting position: info depth 64 seldepth 87 multipv 1 score cp 23 nodes 13928920239402 nps 0 tbhits 0 time -504995523 pv g1f3 d7d5 d2d4 g8f6 c2c4 d5c4 e2e3 e7e6 f1c4 c7c5 e1g1 b8c6 d4c5 d8d1 f1d1 f8c5 c4e2 e8g8 a2a3 c5e7 b2b4 f8d8 b1d2 b7b6 c1b2 c8b7 a1c1 a8c8 c1c2 c6e5 d1c1 c8c2 c1c2 e5f3 d2f3 a7a5 b4b5 e7c5 f3d4 d8c8 d4b3 c5d6 c2c8 b7c8 b3d2 c8b7 d2c4 d6c5 e2f3 b7d5 f3d5 e6d5 c4e5 a5a4 e5d3 f6e4 d3c5 e4c5 b2d4 c5e4 d4b6 e4d6 g2g4 d6b5 b6c5 b5c7 g1g2 c7e6 c5d6 g7g6 We check at compile time that the TimePoint type is exactly 64 bits long for the compiler (TimePoint is our alias in Stockfish for std::chrono::milliseconds -- it is a signed integer type of at least 45 bits according to the C++ standard, but will most probably be implemented as a 64 bits signed integer on modern compilers), and we use this TimePoint type consistently across the code. Bug report by user "fischerandom" on the TCEC chat (thanks), and the patch includes code and suggestions by user "WOnder93" and Ronald de Man. Fixes issue: https://github.com/official-stockfish/Stockfish/issues/1498 Closes pull request: https://github.com/official-stockfish/Stockfish/pull/1510 No functional change.
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