Dev Builds » 20210519-1734

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 08:14:56 1965990 3343 2744 11 588 +399.32 +/- 14.04
ncm-et-4 08:14:44 1963418 3323 2718 10 595 +396.61 +/- 13.95
ncm-et-9 08:14:50 1963559 3337 2707 20 610 +386.79 +/- 13.8
ncm-et-10 08:14:49 1952730 3304 2675 13 616 +387.26 +/- 13.71
ncm-et-13 08:14:42 1963427 3361 2718 14 629 +386.11 +/- 13.57
ncm-et-15 08:14:46 1959483 3332 2699 19 614 +385.91 +/- 13.75
20000 16261 87 3652 +390.26 +/- 5.63

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
147135 ncm-et-10 2021-05-21 04:38 00:03:52 1946636 23 15 0 8 +270.63 +/- 130.4
147134 ncm-et-4 2021-05-21 04:37 00:04:43 1969722 27 24 0 3 +492.06 +/- 422.58
147133 ncm-et-15 2021-05-21 04:37 00:05:13 1966333 33 26 0 7 +370.25 +/- 150.56
147132 ncm-et-9 2021-05-21 04:37 00:05:32 1962455 36 32 0 4 +492.09 +/- 290.06
147131 ncm-et-13 2021-05-21 04:37 00:05:32 1960157 32 25 1 6 +338.04 +/- 165.54
147130 ncm-et-3 2021-05-21 04:37 00:05:58 1967863 36 26 0 10 +316.92 +/- 116.53
147129 ncm-et-3 2021-05-21 03:23 01:13:13 1962367 500 412 1 87 +404.05 +/- 36.82
147128 ncm-et-4 2021-05-21 03:23 01:14:11 1971802 500 409 1 90 +397.72 +/- 36.17
147127 ncm-et-13 2021-05-21 03:23 01:13:30 1966159 500 401 2 97 +379.78 +/- 34.83
147126 ncm-et-15 2021-05-21 03:23 01:13:49 1957709 500 408 4 88 +389.56 +/- 36.69
147125 ncm-et-9 2021-05-21 03:23 01:13:38 1966614 500 405 1 94 +389.56 +/- 35.35
147124 ncm-et-10 2021-05-21 03:22 01:15:13 1954808 500 396 2 102 +370.41 +/- 33.92
147081 ncm-et-10 2021-05-20 18:22 00:43:06 1948278 281 228 1 52 +389.39 +/- 48.0
147080 ncm-et-4 2021-05-20 18:21 00:43:41 1962001 296 241 3 52 +385.65 +/- 48.1
147079 ncm-et-9 2021-05-20 18:21 00:44:15 1970188 301 243 3 55 +379.15 +/- 46.71
147078 ncm-et-15 2021-05-20 18:20 00:45:04 1945004 299 244 4 51 +384.29 +/- 48.55
147077 ncm-et-3 2021-05-20 18:20 00:45:24 1963104 307 256 0 51 +417.17 +/- 48.43
147076 ncm-et-13 2021-05-20 18:16 00:48:44 1963999 329 258 2 69 +361.53 +/- 41.45
147075 ncm-et-10 2021-05-20 17:08 01:13:09 1959244 500 405 3 92 +385.59 +/- 35.84
147074 ncm-et-4 2021-05-20 17:07 01:14:05 1976075 500 416 1 83 +412.8 +/- 37.74
147073 ncm-et-9 2021-05-20 17:06 01:14:20 1969087 500 407 4 89 +387.57 +/- 36.48
147072 ncm-et-15 2021-05-20 17:05 01:14:24 1959931 500 414 0 86 +410.58 +/- 36.97
147071 ncm-et-3 2021-05-20 17:04 01:15:04 1966929 500 417 2 81 +412.8 +/- 38.27
147070 ncm-et-13 2021-05-20 17:01 01:14:11 1957557 500 405 1 94 +389.56 +/- 35.35
147069 ncm-et-4 2021-05-20 15:52 01:13:45 1961688 500 408 0 92 +397.72 +/- 35.69
147068 ncm-et-10 2021-05-20 15:52 01:15:55 1952674 500 409 3 88 +393.6 +/- 36.68
147067 ncm-et-9 2021-05-20 15:51 01:13:49 1964924 500 405 5 90 +381.7 +/- 36.27
147066 ncm-et-15 2021-05-20 15:50 01:14:10 1961728 500 417 1 82 +415.05 +/- 37.98
147065 ncm-et-3 2021-05-20 15:49 01:14:08 1974830 500 409 3 88 +393.6 +/- 36.68
147064 ncm-et-13 2021-05-20 15:48 01:12:44 1965849 500 413 2 85 +404.05 +/- 37.32
147063 ncm-et-10 2021-05-20 14:37 01:14:16 1949940 500 392 0 108 +366.77 +/- 32.8
147062 ncm-et-4 2021-05-20 14:36 01:15:17 1940006 500 414 3 83 +404.05 +/- 37.81
147061 ncm-et-15 2021-05-20 14:36 01:13:56 1964626 500 392 3 105 +361.43 +/- 33.45
147060 ncm-et-9 2021-05-20 14:35 01:15:51 1950852 500 404 3 93 +383.64 +/- 35.64
147059 ncm-et-3 2021-05-20 14:35 01:13:51 1967396 500 395 3 102 +366.78 +/- 33.96
147058 ncm-et-13 2021-05-20 14:34 01:13:07 1966009 500 400 3 97 +375.98 +/- 34.86
147057 ncm-et-9 2021-05-20 13:20 01:13:55 1962164 500 407 3 90 +389.56 +/- 36.25
147056 ncm-et-13 2021-05-20 13:20 01:13:20 1965845 500 416 3 81 +408.38 +/- 38.29
147055 ncm-et-10 2021-05-20 13:20 01:15:45 1949640 500 417 2 81 +412.8 +/- 38.27
147054 ncm-et-15 2021-05-20 13:20 01:15:04 1958350 500 407 2 91 +391.57 +/- 36.01
147053 ncm-et-3 2021-05-20 13:20 01:14:08 1960664 500 415 2 83 +408.38 +/- 37.78
147052 ncm-et-4 2021-05-20 13:20 01:16:02 1956035 500 392 2 106 +363.2 +/- 33.24
147051 ncm-et-9 2021-05-20 12:06 01:13:30 1962193 500 404 1 95 +387.57 +/- 35.16
147050 ncm-et-10 2021-05-20 12:06 01:13:33 1960621 500 413 2 85 +404.05 +/- 37.32
147049 ncm-et-13 2021-05-20 12:06 01:13:34 1961842 500 400 0 100 +381.69 +/- 34.16
147048 ncm-et-15 2021-05-20 12:06 01:13:06 1962188 500 391 5 104 +356.21 +/- 33.66
147047 ncm-et-3 2021-05-20 12:06 01:13:10 1964769 500 414 0 86 +410.58 +/- 36.97
147046 ncm-et-4 2021-05-20 12:06 01:13:00 1970020 500 414 0 86 +410.58 +/- 36.97

Commit

Commit ID 038487f95499665bf86ca5343d7a83f970d4b06e
Author Fanael Linithien
Date 2021-05-19 17:34:44 UTC
Use packed 32-bit MMX operations for updating the PSQT accumulator This improves the speed of NNUE by a bit on old hardware that code path is intended for, like a Pentium III 1.13 GHz: 10 repeats of "./stockfish bench 16 1 13 default depth NNUE": Before: 54 642 504 897 cycles (± 0.12%) 62 301 937 829 instructions (± 0.03%) After: 54 320 821 928 cycles (± 0.13%) 62 084 742 699 instructions (± 0.02%) Speed of go depth 20 from startpos: Before: 53103 nps After: 53856 nps closes https://github.com/official-stockfish/Stockfish/pull/3476 No functional change.
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