Dev Builds » 20210111-1754

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 08:22:19 1972769 3354 2679 16 659 +375.96 +/- 13.26
ncm-et-4 08:22:44 1971466 3369 2661 19 689 +366.96 +/- 12.96
ncm-et-9 08:22:09 1968265 3338 2620 16 702 +363.29 +/- 12.83
ncm-et-10 08:22:15 1959863 3295 2587 15 693 +363.71 +/- 12.91
ncm-et-13 08:23:19 1959939 3316 2627 16 673 +369.86 +/- 13.11
ncm-et-15 08:22:51 1968960 3328 2654 11 663 +376.14 +/- 13.2
20000 15828 93 4079 +369.27 +/- 5.32

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
142446 ncm-et-10 2021-01-14 15:35 00:45:17 1962930 295 233 0 62 +372.09 +/- 43.59
142445 ncm-et-13 2021-01-14 15:33 00:47:19 1961843 316 252 2 62 +373.31 +/- 43.85
142444 ncm-et-15 2021-01-14 15:30 00:50:14 1973898 328 273 0 55 +415.4 +/- 46.56
142443 ncm-et-9 2021-01-14 15:29 00:51:17 1971112 338 263 3 72 +353.84 +/- 40.59
142442 ncm-et-3 2021-01-14 15:27 00:53:03 1974673 354 281 1 72 +373.14 +/- 40.5
142441 ncm-et-4 2021-01-14 15:26 00:54:42 1968795 369 304 1 64 +403.13 +/- 43.13
142440 ncm-et-10 2021-01-14 14:17 01:16:49 1959081 500 396 1 103 +372.25 +/- 33.69
142439 ncm-et-13 2021-01-14 14:16 01:15:44 1962303 500 404 4 92 +381.7 +/- 35.86
142438 ncm-et-15 2021-01-14 14:15 01:13:55 1966151 500 392 2 106 +363.2 +/- 33.24
142437 ncm-et-9 2021-01-14 14:13 01:14:45 1975919 500 392 4 104 +359.68 +/- 33.64
142436 ncm-et-3 2021-01-14 14:12 01:14:43 1972353 500 396 4 100 +366.78 +/- 34.34
142435 ncm-et-4 2021-01-14 14:10 01:14:30 1977009 500 408 2 90 +393.6 +/- 36.22
142434 ncm-et-13 2021-01-14 13:00 01:15:47 1960461 500 394 3 103 +364.98 +/- 33.79
142433 ncm-et-10 2021-01-14 12:59 01:16:47 1958181 500 394 3 103 +364.98 +/- 33.79
142432 ncm-et-15 2021-01-14 12:59 01:15:10 1971409 500 397 2 101 +372.25 +/- 34.1
142431 ncm-et-3 2021-01-14 12:56 01:14:18 1971101 500 411 1 88 +401.92 +/- 36.6
142430 ncm-et-9 2021-01-14 12:56 01:16:30 1962006 500 402 2 96 +381.7 +/- 35.02
142429 ncm-et-4 2021-01-14 12:54 01:15:05 1965534 500 395 2 103 +368.59 +/- 33.75
142428 ncm-et-13 2021-01-14 11:43 01:15:44 1958624 500 388 1 111 +357.94 +/- 32.39
142427 ncm-et-10 2021-01-14 11:42 01:16:05 1962157 500 393 4 103 +361.43 +/- 33.81
142426 ncm-et-15 2021-01-14 11:41 01:16:38 1964302 500 401 1 98 +381.7 +/- 34.59
142425 ncm-et-9 2021-01-14 11:40 01:15:13 1970339 500 395 0 105 +372.25 +/- 33.29
142424 ncm-et-3 2021-01-14 11:39 01:16:17 1973590 500 401 2 97 +379.78 +/- 34.83
142423 ncm-et-4 2021-01-14 11:37 01:15:39 1971410 500 377 4 119 +334.88 +/- 31.35
142422 ncm-et-10 2021-01-14 10:26 01:15:37 1959861 500 390 2 108 +359.68 +/- 32.92
142421 ncm-et-13 2021-01-14 10:25 01:16:37 1956488 500 402 2 96 +381.7 +/- 35.02
142420 ncm-et-9 2021-01-14 10:24 01:14:05 1966942 500 383 1 116 +349.43 +/- 31.64
142419 ncm-et-15 2021-01-14 10:24 01:16:30 1965380 500 396 3 101 +368.59 +/- 34.13
142418 ncm-et-3 2021-01-14 10:23 01:14:33 1973430 500 393 2 105 +364.98 +/- 33.41
142417 ncm-et-4 2021-01-14 10:22 01:14:41 1973744 500 391 4 105 +357.94 +/- 33.48
142416 ncm-et-3 2021-01-14 09:08 01:14:27 1967233 500 397 3 100 +370.41 +/- 34.31
142415 ncm-et-10 2021-01-14 09:08 01:16:50 1953446 500 393 4 103 +361.43 +/- 33.81
142414 ncm-et-15 2021-01-14 09:08 01:15:13 1970482 500 393 1 106 +366.78 +/- 33.19
142413 ncm-et-4 2021-01-14 09:08 01:13:02 1970343 500 400 2 98 +377.87 +/- 34.64
142412 ncm-et-9 2021-01-14 09:08 01:15:48 1964611 500 383 2 115 +347.77 +/- 31.84
142411 ncm-et-13 2021-01-14 09:08 01:16:31 1960928 500 397 4 99 +368.59 +/- 34.52
142368 ncm-et-9 2021-01-13 23:23 01:14:31 1966927 500 402 4 94 +377.87 +/- 35.46
142367 ncm-et-10 2021-01-13 23:23 01:14:50 1963385 500 388 1 111 +357.94 +/- 32.39
142366 ncm-et-15 2021-01-13 23:23 01:15:11 1971101 500 402 2 96 +381.7 +/- 35.02
142365 ncm-et-13 2021-01-13 23:23 01:15:37 1958930 500 390 0 110 +363.2 +/- 32.48
142364 ncm-et-3 2021-01-13 23:23 01:14:58 1977005 500 400 3 97 +375.98 +/- 34.86
142363 ncm-et-4 2021-01-13 23:23 01:15:05 1973432 500 386 4 110 +349.43 +/- 32.67

Commit

Commit ID 303713b560e356a902c1830bce205716cef54a44
Author MaximMolchanov
Date 2021-01-11 17:54:18 UTC
Affine transform robust implementation Size of the weights in the last layer is less than 512 bits. It leads to wrong data access for AVX512. There is no error because in current implementation it is guaranteed that there is an array of zeros after weights so zero multiplied by something is returned and sum is correct. It is a mistake that can lead to unexpected bugs in the future. Used AVX2 instructions for smaller input size. No measurable slowdown on avx512. closes https://github.com/official-stockfish/Stockfish/pull/3298 No functional change.
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