Dev Builds » 20180530-1107

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 06:11:30 2002145 2447 1193 81 1173 +170.34 +/- 9.73
ncm-et-4 06:11:04 2001838 2440 1146 88 1206 +161.32 +/- 9.57
ncm-et-5 01:56:08 2023447 774 389 30 355 +174.47 +/- 17.84
ncm-et-6 01:56:29 2025246 780 371 21 388 +167.84 +/- 16.78
ncm-et-7 01:56:23 2003868 759 364 22 373 +168.66 +/- 17.17
ncm-et-9 06:10:36 2000834 2444 1141 57 1246 +165.6 +/- 9.29
ncm-et-10 06:11:07 1964753 2409 1163 78 1168 +168.57 +/- 9.73
ncm-et-11 01:56:19 2025490 774 379 16 379 +176.77 +/- 16.93
ncm-et-12 01:56:00 1929549 747 344 32 371 +154.56 +/- 17.33
ncm-et-13 06:10:48 1990709 2433 1150 62 1221 +167.18 +/- 9.43
ncm-et-14 01:56:24 2019777 768 386 23 359 +178.4 +/- 17.62
ncm-et-15 06:11:31 1993643 2458 1185 53 1220 +173.02 +/- 9.42
ncm-et-16 01:56:12 1994422 767 387 16 364 +183.38 +/- 17.35
20000 9598 579 9823 +168.82 +/- 3.34

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
50394 ncm-et-10 2018-08-19 14:16 00:20:10 1980129 135 73 4 58 +196.03 +/- 44.54
50393 ncm-et-13 2018-08-19 14:11 00:26:01 1951593 165 80 9 76 +159.91 +/- 38.97
50392 ncm-et-9 2018-08-19 14:10 00:26:02 1987508 171 71 7 93 +136.67 +/- 34.2
50391 ncm-et-4 2018-08-19 14:10 00:26:21 1989243 174 95 13 66 +177.78 +/- 42.24
50390 ncm-et-3 2018-08-19 14:10 00:27:05 1989245 172 82 8 82 +159.88 +/- 37.27
50389 ncm-et-15 2018-08-19 14:09 00:27:31 1982007 183 90 4 89 +177.19 +/- 35.16
50388 ncm-et-10 2018-08-19 12:57 01:18:29 1918232 500 233 12 255 +164.93 +/- 20.58
50387 ncm-et-13 2018-08-19 12:54 01:15:38 1988769 500 237 13 250 +167.53 +/- 20.88
50386 ncm-et-4 2018-08-19 12:53 01:15:47 1990665 500 230 16 254 +158.93 +/- 20.76
50385 ncm-et-9 2018-08-19 12:53 01:16:12 1986879 500 245 9 246 +178.11 +/- 20.97
50384 ncm-et-3 2018-08-19 12:53 01:15:32 1990822 500 246 13 241 +175.44 +/- 21.38
50383 ncm-et-15 2018-08-19 12:52 01:16:28 1981381 500 244 13 243 +173.67 +/- 21.27
50382 ncm-et-4 2018-08-19 11:37 01:15:46 1989560 500 218 14 268 +150.51 +/- 19.96
50381 ncm-et-9 2018-08-19 11:36 01:15:47 1987511 500 250 12 238 +179.9 +/- 21.52
50380 ncm-et-13 2018-08-19 11:36 01:16:31 1966061 500 227 12 261 +159.78 +/- 20.26
50379 ncm-et-15 2018-08-19 11:35 01:15:19 1979349 500 247 8 245 +180.8 +/- 20.99
50378 ncm-et-10 2018-08-19 11:35 01:20:50 1880185 500 241 18 241 +166.66 +/- 21.52
50377 ncm-et-3 2018-08-19 11:35 01:17:07 1990349 500 254 12 234 +183.51 +/- 21.75
50376 ncm-et-13 2018-08-19 10:19 01:16:12 1987509 500 255 6 239 +189.92 +/- 21.24
50375 ncm-et-4 2018-08-19 10:19 01:16:41 1988455 500 229 20 251 +154.7 +/- 21.02
50374 ncm-et-9 2018-08-19 10:19 01:16:31 1991143 500 232 9 259 +166.66 +/- 20.26
50373 ncm-et-15 2018-08-19 10:18 01:15:45 1982322 500 230 9 261 +164.93 +/- 20.16
50372 ncm-et-10 2018-08-19 10:18 01:15:25 1967978 500 250 14 236 +178.11 +/- 21.69
50371 ncm-et-3 2018-08-19 10:18 01:15:25 1990981 500 243 19 238 +167.53 +/- 21.71
36669 ncm-et-12 2018-05-30 16:35 00:38:30 1915100 247 123 10 114 +171.68 +/- 31.58
36668 ncm-et-7 2018-05-30 16:34 00:39:32 1982328 259 129 7 123 +177.68 +/- 30.07
36667 ncm-et-16 2018-05-30 16:33 00:40:01 2002927 267 136 3 128 +189.98 +/- 29.05
36666 ncm-et-14 2018-05-30 16:33 00:40:12 2019696 268 130 10 128 +167.43 +/- 29.63
36665 ncm-et-4 2018-05-30 16:33 00:40:35 2026392 266 131 11 124 +168.89 +/- 30.25
36664 ncm-et-5 2018-05-30 16:33 00:40:17 2022304 274 134 10 130 +169.52 +/- 29.41
36663 ncm-et-13 2018-05-30 16:33 00:40:33 2025735 268 124 6 138 +164.2 +/- 27.94
36662 ncm-et-6 2018-05-30 16:32 00:40:52 2024920 280 127 10 143 +154.64 +/- 27.75
36661 ncm-et-15 2018-05-30 16:32 00:40:54 2021325 275 136 7 132 +176.81 +/- 28.95
36660 ncm-et-9 2018-05-30 16:32 00:40:47 2027868 273 129 4 140 +171.85 +/- 27.57
36659 ncm-et-11 2018-05-30 16:32 00:41:03 2025735 274 133 5 136 +175.95 +/- 28.22
36658 ncm-et-10 2018-05-30 16:32 00:41:15 2019858 274 142 12 120 +179.21 +/- 30.95
36657 ncm-et-3 2018-05-30 16:32 00:41:34 2024754 275 118 9 148 +145.69 +/- 26.97
36656 ncm-et-12 2018-05-30 15:16 01:17:30 1943998 500 221 22 257 +146.36 +/- 20.75
36655 ncm-et-3 2018-05-30 15:16 01:14:47 2026719 500 250 20 230 +172.78 +/- 22.18
36654 ncm-et-10 2018-05-30 15:16 01:14:58 2022140 500 224 18 258 +152.18 +/- 20.6
36653 ncm-et-9 2018-05-30 15:16 01:15:17 2024099 500 214 16 270 +145.54 +/- 19.92
36652 ncm-et-16 2018-05-30 15:16 01:16:11 1985917 500 251 13 236 +179.9 +/- 21.66
36651 ncm-et-7 2018-05-30 15:16 01:16:51 2025409 500 235 15 250 +164.07 +/- 20.94
36650 ncm-et-14 2018-05-30 15:16 01:16:12 2019858 500 256 13 231 +184.42 +/- 21.95
36649 ncm-et-4 2018-05-30 15:16 01:15:54 2026718 500 243 14 243 +171.9 +/- 21.3
36648 ncm-et-5 2018-05-30 15:16 01:15:51 2024590 500 255 20 225 +177.22 +/- 22.48
36647 ncm-et-6 2018-05-30 15:16 01:15:37 2025573 500 244 11 245 +175.44 +/- 21.09
36646 ncm-et-11 2018-05-30 15:16 01:15:16 2025245 500 246 11 243 +177.22 +/- 21.21
36645 ncm-et-15 2018-05-30 15:16 01:15:34 2015474 500 238 12 250 +169.27 +/- 20.85
36644 ncm-et-13 2018-05-30 15:16 01:15:53 2024590 500 227 16 257 +156.39 +/- 20.6

Commit

Commit ID 626d43a329adca379421db5d378e33df0868584b
Author Rodrigo Exterckötter Tjäder
Date 2018-05-30 11:07:18 UTC
Use threads to clear the TT faster. Stockfish currently takes a while to clear the TT when using larger hash sizes. On one machine with 128 GB hash it takes about 50 seconds with a single thread, allowing it to use all allocated cores brought that time down to 4 seconds on some Linux systems. The patch was further tested on Windows and refined with NUMA binding of the hash initializing threads (we refer to pull request #1601 for the complete discussion and the speed measurements). Closes https://github.com/official-stockfish/Stockfish/pull/1601 No functional change
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