Dev Builds » 20201214-0646

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 08:24:02 1966451 3338 2614 16 708 +361.7 +/- 12.78
ncm-et-4 08:23:51 1945720 3284 2613 12 659 +374.13 +/- 13.24
ncm-et-9 08:23:55 1966516 3341 2611 19 711 +359.52 +/- 12.75
ncm-et-10 08:23:49 1958995 3323 2631 12 680 +370.54 +/- 13.03
ncm-et-13 08:23:33 1961362 3360 2656 13 691 +369.14 +/- 12.93
ncm-et-15 08:23:53 1968926 3354 2621 19 714 +359.49 +/- 12.73
20000 15746 91 4163 +365.65 +/- 5.26

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
141564 ncm-et-4 2020-12-15 13:16 00:43:54 1939017 284 223 0 61 +367.87 +/- 43.93
141563 ncm-et-10 2020-12-15 13:10 00:49:28 1935516 323 256 0 67 +374.64 +/- 41.89
141562 ncm-et-3 2020-12-15 13:09 00:51:07 1965398 338 268 4 66 +364.15 +/- 42.5
141561 ncm-et-9 2020-12-15 13:08 00:51:51 1966489 341 266 4 71 +353.08 +/- 40.92
141560 ncm-et-15 2020-12-15 13:06 00:53:43 1963073 354 285 0 69 +386.66 +/- 41.31
141559 ncm-et-13 2020-12-15 13:06 00:53:42 1960308 360 268 3 89 +327.26 +/- 36.32
141558 ncm-et-4 2020-12-15 11:57 01:17:33 1922639 500 414 0 86 +410.58 +/- 36.97
141557 ncm-et-9 2020-12-15 11:53 01:14:00 1963688 500 392 5 103 +357.94 +/- 33.83
141556 ncm-et-10 2020-12-15 11:52 01:16:51 1956635 500 387 1 112 +356.21 +/- 32.24
141555 ncm-et-3 2020-12-15 11:51 01:16:12 1964919 500 394 1 105 +368.59 +/- 33.35
141554 ncm-et-15 2020-12-15 11:49 01:15:44 1971416 500 392 2 106 +363.2 +/- 33.24
141553 ncm-et-13 2020-12-15 11:49 01:15:50 1961689 500 397 0 103 +375.98 +/- 33.63
141552 ncm-et-4 2020-12-15 10:38 01:18:09 1905573 500 387 3 110 +352.8 +/- 32.64
141551 ncm-et-10 2020-12-15 10:36 01:15:01 1966772 500 396 3 101 +368.59 +/- 34.13
141550 ncm-et-9 2020-12-15 10:36 01:16:10 1969706 500 376 0 124 +339.63 +/- 30.48
141549 ncm-et-3 2020-12-15 10:34 01:16:22 1968632 500 390 2 108 +359.68 +/- 32.92
141548 ncm-et-13 2020-12-15 10:34 01:14:20 1962303 500 401 5 94 +374.11 +/- 35.47
141547 ncm-et-15 2020-12-15 10:33 01:14:58 1966627 500 389 2 109 +357.94 +/- 32.76
141546 ncm-et-4 2020-12-15 09:23 01:14:17 1973739 500 402 1 97 +383.64 +/- 34.77
141545 ncm-et-10 2020-12-15 09:20 01:14:53 1962630 500 400 0 100 +381.69 +/- 34.16
141544 ncm-et-9 2020-12-15 09:20 01:14:53 1965384 500 394 2 104 +366.78 +/- 33.58
141543 ncm-et-15 2020-12-15 09:18 01:13:58 1971588 500 378 2 120 +339.63 +/- 31.13
141542 ncm-et-13 2020-12-15 09:18 01:14:53 1961691 500 402 1 97 +383.64 +/- 34.77
141541 ncm-et-3 2020-12-15 09:18 01:15:09 1972196 500 406 2 92 +389.56 +/- 35.8
141540 ncm-et-4 2020-12-15 08:06 01:15:54 1974367 500 395 2 103 +368.59 +/- 33.75
141539 ncm-et-10 2020-12-15 08:03 01:15:57 1969396 500 406 1 93 +391.57 +/- 35.55
141538 ncm-et-13 2020-12-15 08:03 01:13:58 1958777 500 388 3 109 +354.5 +/- 32.8
141537 ncm-et-9 2020-12-15 08:03 01:16:05 1967237 500 392 1 107 +364.98 +/- 33.02
141536 ncm-et-15 2020-12-15 08:02 01:14:49 1963690 500 394 2 104 +366.78 +/- 33.58
141535 ncm-et-3 2020-12-15 08:02 01:15:08 1962000 500 384 2 114 +349.43 +/- 31.99
141534 ncm-et-4 2020-12-15 06:49 01:15:40 1959463 500 397 5 98 +366.78 +/- 34.71
141533 ncm-et-13 2020-12-15 06:46 01:15:28 1963075 500 403 0 97 +387.56 +/- 34.71
141532 ncm-et-3 2020-12-15 06:46 01:14:25 1962917 500 382 1 117 +347.77 +/- 31.5
141531 ncm-et-10 2020-12-15 06:46 01:16:34 1957246 500 389 5 106 +352.8 +/- 33.33
141530 ncm-et-15 2020-12-15 06:45 01:15:49 1975915 500 390 4 106 +356.21 +/- 33.31
141529 ncm-et-9 2020-12-15 06:45 01:16:10 1968783 500 391 4 105 +357.94 +/- 33.48
141528 ncm-et-13 2020-12-15 05:30 01:15:22 1961693 500 397 1 102 +374.11 +/- 33.87
141527 ncm-et-15 2020-12-15 05:30 01:14:52 1970177 500 393 7 100 +356.21 +/- 34.36
141526 ncm-et-10 2020-12-15 05:30 01:15:05 1964774 500 397 2 101 +372.25 +/- 34.1
141525 ncm-et-9 2020-12-15 05:30 01:14:46 1964330 500 400 3 97 +375.98 +/- 34.86
141524 ncm-et-4 2020-12-15 05:29 01:18:24 1945243 500 395 1 104 +370.41 +/- 33.52
141523 ncm-et-3 2020-12-15 05:29 01:15:39 1969097 500 390 4 106 +356.21 +/- 33.31

Commit

Commit ID d862ba40692797031ec5b0d95e46bcfc5a80f06c
Author mstembera
Date 2020-12-14 06:46:15 UTC
AVX512, AVX2 and SSSE3 speedups Improves throughput by summing 2 intermediate dot products using 16 bit addition before upconverting to 32 bit. Potential saturation is detected and the code-path is avoided in this case. The saturation can't happen with the current nets, but nets can be constructed that trigger this check. STC https://tests.stockfishchess.org/tests/view/5fd40a861ac1691201888479 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 25544 W: 2451 L: 2296 D: 20797 Ptnml(0-2): 92, 1761, 8925, 1888, 106 about 5% speedup closes https://github.com/official-stockfish/Stockfish/pull/3261 No functional change
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