Dev Builds » 20210521-2226

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 08:12:13 1965043 3344 2678 18 648 +377.35 +/- 13.37
ncm-et-4 08:12:16 1963008 3347 2719 14 614 +389.75 +/- 13.74
ncm-et-9 08:12:06 1958880 3336 2721 11 604 +393.96 +/- 13.85
ncm-et-10 08:12:12 1956897 3303 2690 10 603 +392.97 +/- 13.85
ncm-et-13 08:12:20 1961066 3337 2745 15 577 +399.91 +/- 14.18
ncm-et-15 08:12:21 1961918 3333 2729 19 585 +394.71 +/- 14.09
20000 16282 87 3631 +391.32 +/- 5.64

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
147261 ncm-et-10 2021-05-22 07:31 00:45:08 1949342 303 241 1 61 +374.18 +/- 44.13
147260 ncm-et-15 2021-05-22 07:27 00:48:41 1968778 333 276 1 56 +408.19 +/- 46.24
147259 ncm-et-9 2021-05-22 07:26 00:49:44 1959548 336 266 1 69 +371.05 +/- 41.39
147258 ncm-et-13 2021-05-22 07:26 00:50:10 1962305 337 271 1 65 +382.85 +/- 42.73
147257 ncm-et-3 2021-05-22 07:25 00:50:53 1957293 344 263 1 80 +347.46 +/- 38.27
147256 ncm-et-4 2021-05-22 07:25 00:51:15 1962667 347 280 3 64 +380.03 +/- 43.19
147255 ncm-et-10 2021-05-22 06:15 01:15:01 1958628 500 410 2 88 +397.72 +/- 36.65
147254 ncm-et-13 2021-05-22 06:12 01:13:12 1961997 500 410 3 87 +395.65 +/- 36.9
147253 ncm-et-15 2021-05-22 06:12 01:15:07 1957878 500 412 4 84 +397.72 +/- 37.58
147252 ncm-et-9 2021-05-22 06:11 01:14:39 1951199 500 408 1 91 +395.65 +/- 35.96
147251 ncm-et-3 2021-05-22 06:10 01:13:58 1953992 500 405 3 92 +385.59 +/- 35.84
147250 ncm-et-4 2021-05-22 06:10 01:13:41 1961696 500 407 1 92 +393.6 +/- 35.75
147249 ncm-et-10 2021-05-22 04:59 01:15:16 1951933 500 404 1 95 +387.57 +/- 35.16
147248 ncm-et-15 2021-05-22 04:58 01:12:33 1964313 500 411 3 86 +397.72 +/- 37.12
147247 ncm-et-13 2021-05-22 04:57 01:14:10 1957284 500 423 1 76 +429.05 +/- 39.52
147246 ncm-et-9 2021-05-22 04:57 01:13:29 1955590 500 412 0 88 +406.2 +/- 36.53
147245 ncm-et-4 2021-05-22 04:57 01:13:07 1963407 500 399 1 100 +377.87 +/- 34.22
147244 ncm-et-3 2021-05-22 04:56 01:14:18 1966159 500 394 4 102 +363.2 +/- 33.99
147243 ncm-et-15 2021-05-22 03:45 01:12:18 1959260 500 407 1 92 +393.6 +/- 35.75
147242 ncm-et-13 2021-05-22 03:44 01:12:26 1965688 500 408 1 91 +395.65 +/- 35.96
147241 ncm-et-9 2021-05-22 03:44 01:12:05 1960312 500 404 5 91 +379.78 +/- 36.07
147240 ncm-et-10 2021-05-22 03:44 01:15:01 1958333 500 413 2 85 +404.05 +/- 37.32
147239 ncm-et-4 2021-05-22 03:42 01:13:36 1965545 500 414 2 84 +406.2 +/- 37.55
147238 ncm-et-3 2021-05-22 03:40 01:15:19 1961701 500 401 2 97 +379.78 +/- 34.83
147237 ncm-et-15 2021-05-22 02:30 01:14:48 1955269 500 400 3 97 +375.98 +/- 34.86
147236 ncm-et-4 2021-05-22 02:29 01:12:32 1967423 500 404 2 94 +385.59 +/- 35.4
147235 ncm-et-10 2021-05-22 02:29 01:13:52 1961246 500 414 1 85 +408.38 +/- 37.27
147234 ncm-et-13 2021-05-22 02:28 01:15:09 1955415 500 410 4 86 +393.6 +/- 37.13
147233 ncm-et-9 2021-05-22 02:28 01:15:49 1951006 500 411 1 88 +401.92 +/- 36.6
147232 ncm-et-3 2021-05-22 02:26 01:13:17 1969426 500 411 1 88 +401.92 +/- 36.6
147231 ncm-et-15 2021-05-22 01:16 01:13:20 1970066 500 423 4 73 +421.93 +/- 40.4
147230 ncm-et-13 2021-05-22 01:14 01:13:25 1962932 500 408 3 89 +391.57 +/- 36.46
147229 ncm-et-4 2021-05-22 01:14 01:14:31 1957862 500 407 3 90 +389.56 +/- 36.25
147228 ncm-et-10 2021-05-22 01:14 01:14:32 1955730 500 399 2 99 +375.98 +/- 34.46
147227 ncm-et-9 2021-05-22 01:14 01:12:58 1968934 500 411 0 89 +404.05 +/- 36.31
147226 ncm-et-3 2021-05-22 01:13 01:11:43 1976237 500 400 6 94 +370.41 +/- 35.47
147225 ncm-et-9 2021-05-22 00:00 01:13:22 1965571 500 409 3 88 +393.6 +/- 36.68
147224 ncm-et-10 2021-05-22 00:00 01:13:22 1963071 500 409 1 90 +397.72 +/- 36.17
147223 ncm-et-13 2021-05-22 00:00 01:13:48 1961842 500 415 2 83 +408.38 +/- 37.78
147222 ncm-et-3 2021-05-22 00:00 01:12:45 1970493 500 404 1 95 +387.57 +/- 35.16
147221 ncm-et-15 2021-05-22 00:00 01:15:34 1957864 500 400 3 97 +375.98 +/- 34.86
147220 ncm-et-4 2021-05-22 00:00 01:13:34 1962457 500 408 2 90 +393.6 +/- 36.22

Commit

Commit ID f233ca1af4d36ded8ce924131f42bc4d0093ec6e
Author Guy Vreuls
Date 2021-05-21 22:26:00 UTC
Compact position structures Reorder the structures data members in position.h to reduce padding. Passed STC: https://tests.stockfishchess.org/tests/view/60a8011fce8ea25a3ef04069 LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 14120 W: 1214 L: 1067 D: 11839 Ptnml(0-2): 26, 857, 5161, 976, 40 --- Also tested for speed locally by Joost: Result of 50 runs ================== base (./stockfish.master ) = 2254919 +/- 4439 test (./stockfish.patch ) = 2274003 +/- 5278 diff = +19084 +/- 6386 ================== speedup = +0.0085 P(speedup > 0) = 1.0000 --- closes https://github.com/official-stockfish/Stockfish/pull/3488 No functional change.
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