Dev Builds » 20200823-2109

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 08:37:11 1962644 3331 2445 42 844 +316.36 +/- 11.71
ncm-et-4 08:37:13 1963571 3338 2495 41 802 +326.55 +/- 12.02
ncm-et-9 08:37:10 1968198 3327 2503 28 796 +333.26 +/- 12.05
ncm-et-10 08:37:03 1962601 3327 2515 33 779 +334.9 +/- 12.19
ncm-et-13 08:36:53 1961759 3322 2419 43 860 +311.93 +/- 11.6
ncm-et-15 08:37:02 1966160 3355 2450 32 873 +315.86 +/- 11.49
20000 14827 219 4954 +322.97 +/- 4.83

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
135961 ncm-et-13 2020-08-24 17:04 00:48:58 1959390 322 248 2 72 +349.41 +/- 40.51
135960 ncm-et-3 2020-08-24 17:03 00:50:37 1959694 331 249 1 81 +337.44 +/- 37.98
135959 ncm-et-9 2020-08-24 17:03 00:50:51 1970185 327 251 2 74 +347.33 +/- 39.94
135958 ncm-et-4 2020-08-24 17:02 00:51:28 1976539 338 264 3 71 +356.37 +/- 40.89
135957 ncm-et-10 2020-08-24 17:01 00:52:05 1963085 327 251 4 72 +342.33 +/- 40.61
135956 ncm-et-15 2020-08-24 16:58 00:55:13 1966166 355 270 2 83 +341.99 +/- 37.62
135955 ncm-et-3 2020-08-24 15:45 01:16:12 1963687 500 353 11 136 +290.66 +/- 29.36
135954 ncm-et-13 2020-08-24 15:45 01:17:43 1963845 500 360 7 133 +305.45 +/- 29.65
135953 ncm-et-4 2020-08-24 15:44 01:17:02 1966928 500 385 4 111 +347.77 +/- 32.52
135952 ncm-et-10 2020-08-24 15:43 01:16:45 1964166 500 386 5 109 +347.77 +/- 32.85
135951 ncm-et-9 2020-08-24 15:43 01:18:38 1965259 500 385 8 107 +341.24 +/- 33.19
135950 ncm-et-15 2020-08-24 15:41 01:16:20 1962455 500 358 3 139 +308.24 +/- 28.83
135949 ncm-et-13 2020-08-24 14:27 01:17:25 1961229 500 368 6 126 +318.25 +/- 30.48
135948 ncm-et-3 2020-08-24 14:27 01:17:50 1965842 500 374 8 118 +324.17 +/- 31.56
135947 ncm-et-10 2020-08-24 14:25 01:16:57 1966305 500 379 3 118 +339.63 +/- 31.46
135946 ncm-et-9 2020-08-24 14:24 01:17:18 1969707 500 362 4 134 +312.48 +/- 29.44
135945 ncm-et-4 2020-08-24 14:23 01:19:35 1933357 500 357 8 135 +299.97 +/- 29.44
135944 ncm-et-15 2020-08-24 14:22 01:17:09 1968788 500 364 3 133 +316.8 +/- 29.52
135943 ncm-et-13 2020-08-24 13:09 01:16:25 1964609 500 351 5 144 +295.94 +/- 28.37
135942 ncm-et-3 2020-08-24 13:07 01:18:56 1956824 500 371 10 119 +316.8 +/- 31.43
135941 ncm-et-15 2020-08-24 13:06 01:15:42 1966780 500 373 5 122 +327.18 +/- 30.97
135940 ncm-et-4 2020-08-24 13:05 01:16:48 1966626 500 370 6 124 +321.19 +/- 30.74
135939 ncm-et-9 2020-08-24 13:05 01:18:17 1971566 500 372 3 125 +328.7 +/- 30.51
135938 ncm-et-10 2020-08-24 13:05 01:19:35 1957399 500 379 4 117 +338.04 +/- 31.63
135937 ncm-et-13 2020-08-24 11:50 01:18:27 1962149 500 366 5 129 +316.8 +/- 30.08
135936 ncm-et-3 2020-08-24 11:48 01:17:49 1960471 500 355 3 142 +304.07 +/- 28.5
135935 ncm-et-10 2020-08-24 11:47 01:16:46 1958947 500 375 6 119 +328.7 +/- 31.4
135934 ncm-et-4 2020-08-24 11:47 01:17:27 1967386 500 360 9 131 +302.7 +/- 29.91
135933 ncm-et-15 2020-08-24 11:47 01:18:04 1965234 500 369 8 123 +316.8 +/- 30.9
135932 ncm-et-9 2020-08-24 11:47 01:17:30 1967723 500 373 5 122 +327.18 +/- 30.97
135931 ncm-et-13 2020-08-24 10:32 01:17:13 1960324 500 359 8 133 +302.7 +/- 29.67
135930 ncm-et-3 2020-08-24 10:29 01:17:12 1965533 500 380 3 117 +341.24 +/- 31.6
135929 ncm-et-4 2020-08-24 10:29 01:16:56 1964765 500 381 2 117 +344.48 +/- 31.55
135928 ncm-et-15 2020-08-24 10:28 01:17:41 1967546 500 357 4 139 +305.45 +/- 28.87
135927 ncm-et-9 2020-08-24 10:27 01:18:06 1968022 500 386 4 110 +349.43 +/- 32.67
135926 ncm-et-10 2020-08-24 10:27 01:18:52 1967385 500 369 6 125 +319.72 +/- 30.61
135925 ncm-et-10 2020-08-24 09:10 01:16:03 1960922 500 376 5 119 +331.77 +/- 31.38
135924 ncm-et-15 2020-08-24 09:10 01:16:53 1966151 500 359 7 134 +304.07 +/- 29.53
135923 ncm-et-9 2020-08-24 09:10 01:16:30 1964930 500 374 2 124 +333.32 +/- 30.6
135922 ncm-et-4 2020-08-24 09:10 01:17:57 1969399 500 378 9 113 +328.7 +/- 32.27
135921 ncm-et-13 2020-08-24 09:10 01:20:42 1960768 500 367 10 123 +311.06 +/- 30.9
135920 ncm-et-3 2020-08-24 09:10 01:18:35 1966459 500 363 6 131 +311.06 +/- 29.86

Commit

Commit ID cc9d503ddea998890112efd08fae3705f2727e37
Author syzygy1
Date 2020-08-23 21:09:31 UTC
Skip the alignment bug workaround for Clang Clang-10.0.0 poses as gcc-4.2: $ clang++ -E -dM - </dev/null | grep GNUC This means that Clang is using the workaround for the alignment bug of gcc-8 even though it does not have the bug (as far as I know). This patch should speed up AVX2 and AVX512 compiles on Windows (when using Clang), because it disables (for Clang) the gcc workaround we had introduced in this commit: https://github.com/official-stockfish/Stockfish/commit/875183b310a8249922c2155e82cb4cecfae2097e closes https://github.com/official-stockfish/Stockfish/pull/3050 No functional change.
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