Dev Builds » 20200917-1524

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 08:27:33 1963096 3240 2537 23 680 +359.61 +/- 13.05
ncm-et-4 08:27:33 1967596 3292 2573 22 697 +358.73 +/- 12.89
ncm-et-9 08:27:31 1967437 3273 2582 22 669 +365.12 +/- 13.16
ncm-et-10 08:27:28 1961613 3272 2538 31 703 +351.28 +/- 12.85
ncm-et-13 09:25:28 1957535 3636 2793 25 818 +347.17 +/- 11.89
ncm-et-15 08:27:39 1964693 3287 2576 16 695 +362.16 +/- 12.9
20000 15599 139 4262 +357.07 +/- 5.21

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
138783 ncm-et-13 2020-09-18 01:41 00:20:22 1960308 136 104 2 30 +338.04 +/- 64.06
138782 ncm-et-3 2020-09-18 01:24 00:38:06 1963994 240 186 1 53 +355.21 +/- 47.39
138781 ncm-et-10 2020-09-18 01:21 00:41:16 1963698 272 209 2 61 +346.97 +/- 44.14
138780 ncm-et-9 2020-09-18 01:19 00:43:23 1965072 273 214 1 58 +363.39 +/- 45.25
138779 ncm-et-4 2020-09-18 01:18 00:44:05 1963535 292 224 3 65 +343.54 +/- 42.77
138778 ncm-et-15 2020-09-18 01:18 00:44:23 1968018 287 238 2 47 +404.37 +/- 50.73
138777 ncm-et-13 2020-09-18 00:22 01:18:34 1957247 500 395 2 103 +368.59 +/- 33.75
138776 ncm-et-3 2020-09-18 00:05 01:17:23 1964609 500 402 1 97 +383.64 +/- 34.77
138775 ncm-et-10 2020-09-18 00:01 01:18:17 1957706 500 396 2 102 +370.41 +/- 33.92
138774 ncm-et-9 2020-09-18 00:01 01:16:46 1963687 500 382 3 115 +344.48 +/- 31.89
138773 ncm-et-4 2020-09-18 00:00 01:16:35 1963848 500 393 6 101 +357.94 +/- 34.18
138772 ncm-et-15 2020-09-17 23:58 01:18:08 1945994 500 378 3 119 +338.04 +/- 31.32
138771 ncm-et-13 2020-09-17 23:04 01:17:12 1963686 500 369 4 127 +322.67 +/- 30.3
138770 ncm-et-3 2020-09-17 22:46 01:18:37 1961843 500 388 2 110 +356.21 +/- 32.6
138769 ncm-et-10 2020-09-17 22:43 01:17:46 1956639 500 386 6 108 +346.12 +/- 33.02
138768 ncm-et-9 2020-09-17 22:42 01:18:16 1965845 500 392 3 105 +361.43 +/- 33.45
138767 ncm-et-4 2020-09-17 22:41 01:17:50 1965844 500 393 0 107 +368.58 +/- 32.96
138766 ncm-et-15 2020-09-17 22:41 01:16:09 1966938 500 408 0 92 +397.72 +/- 35.69
138765 ncm-et-13 2020-09-17 21:45 01:17:46 1964147 500 396 3 101 +368.59 +/- 34.13
138764 ncm-et-3 2020-09-17 21:27 01:18:03 1966001 500 384 5 111 +344.48 +/- 32.54
138763 ncm-et-10 2020-09-17 21:24 01:17:12 1965697 500 383 4 113 +344.48 +/- 32.22
138762 ncm-et-9 2020-09-17 21:24 01:16:48 1970959 500 405 2 93 +387.57 +/- 35.6
138761 ncm-et-4 2020-09-17 21:24 01:16:41 1974520 500 390 2 108 +359.68 +/- 32.92
138760 ncm-et-15 2020-09-17 21:22 01:17:56 1970177 500 392 4 104 +359.68 +/- 33.64
138759 ncm-et-13 2020-09-17 20:25 01:18:24 1961841 500 372 5 123 +325.67 +/- 30.84
138758 ncm-et-3 2020-09-17 20:08 01:17:10 1963224 500 395 2 103 +368.59 +/- 33.75
138757 ncm-et-10 2020-09-17 20:06 01:17:08 1963536 500 384 7 109 +341.24 +/- 32.87
138756 ncm-et-9 2020-09-17 20:05 01:17:32 1969401 500 397 6 97 +364.98 +/- 34.9
138755 ncm-et-4 2020-09-17 20:05 01:17:37 1968327 500 402 4 94 +377.87 +/- 35.46
138754 ncm-et-15 2020-09-17 20:04 01:17:11 1965387 500 383 4 113 +344.48 +/- 32.22
138753 ncm-et-13 2020-09-17 19:07 01:17:01 1959544 500 387 3 110 +352.8 +/- 32.64
138752 ncm-et-9 2020-09-17 18:47 01:17:20 1968930 500 397 6 97 +364.98 +/- 34.9
138751 ncm-et-3 2020-09-17 18:47 01:20:45 1957705 500 389 6 105 +351.11 +/- 33.51
138750 ncm-et-10 2020-09-17 18:46 01:19:00 1957710 500 393 7 100 +356.21 +/- 34.36
138749 ncm-et-4 2020-09-17 18:46 01:18:01 1967542 500 381 1 118 +346.12 +/- 31.36
138748 ncm-et-15 2020-09-17 18:46 01:17:15 1966786 500 406 1 93 +391.57 +/- 35.55
138747 ncm-et-13 2020-09-17 17:49 01:17:15 1963224 500 388 3 109 +354.5 +/- 32.8
138746 ncm-et-9 2020-09-17 17:28 01:17:26 1968166 500 395 1 104 +370.41 +/- 33.52
138745 ncm-et-10 2020-09-17 17:28 01:16:49 1966307 500 387 3 110 +352.8 +/- 32.64
138744 ncm-et-4 2020-09-17 17:28 01:16:44 1969558 500 390 6 104 +352.8 +/- 33.67
138743 ncm-et-3 2020-09-17 17:28 01:17:29 1964301 500 393 6 101 +357.94 +/- 34.18
138742 ncm-et-15 2020-09-17 17:28 01:16:37 1969555 500 371 2 127 +328.7 +/- 30.21
138741 ncm-et-13 2020-09-17 16:29 01:18:54 1930284 500 382 3 115 +344.48 +/- 31.89

Commit

Commit ID 8b8a510fd6a1a17b39b2d4b166f60ac7be0dab23
Author syzygy1
Date 2020-09-17 15:24:52 UTC
Use tiling to speed up accumulator refreshes and updates Perform the update and refresh operations tile by tile in a local array of vectors. By selecting the array size carefully, we achieve that the compiler keeps the whole array in vector registers. Idea and original implementation by @sf-x. STC: https://tests.stockfishchess.org/tests/view/5f623eec912c15f19854b855 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 4872 W: 623 L: 477 D: 3772 Ptnml(0-2): 14, 350, 1585, 450, 37 LTC: https://tests.stockfishchess.org/tests/view/5f62434e912c15f19854b860 LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 25808 W: 1565 L: 1401 D: 22842 Ptnml(0-2): 23, 1186, 10332, 1330, 33 closes https://github.com/official-stockfish/Stockfish/pull/3130 No functional change
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