Dev Builds » 20161203-0837

You are viewing an old NCM Stockfish dev build test. You may find the most recent dev build tests using Stockfish 15 as the baseline here.

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 06:48:36 1986107 2774 795 143 1836 +83.22 ± 7.28
ncm-et-4 06:48:41 1981018 2777 828 112 1837 +91.65 ± 7.22
ncm-et-5 01:52:11 2023528 757 218 28 511 +89.11 ± 13.53
ncm-et-6 01:52:37 2025408 787 205 37 545 +75.33 ± 13.02
ncm-et-7 01:52:39 2004361 758 235 27 496 +97.85 ± 13.92
ncm-et-8 01:52:35 1933582 732 227 33 472 +94.33 ± 14.46
ncm-et-9 06:47:43 1990895 2774 831 105 1838 +93.1 ± 7.2
ncm-et-10 06:49:16 1984656 2783 798 139 1846 +83.86 ± 7.25
ncm-et-11 01:52:25 2015261 770 218 35 517 +84.18 ± 13.58
ncm-et-12 01:52:40 1995637 762 207 33 522 +80.76 ± 13.35
ncm-et-13 06:44:18 1993924 2773 754 128 1891 +79.81 ± 7.04
ncm-et-14 01:52:43 2020673 765 221 38 506 +84.75 ± 13.86
ncm-et-15 01:52:33 2019947 788 215 29 544 +83.58 ± 12.95
20000 5752 887 13361 +86.24 ± 2.67

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
64453 ncm-et-4 2018-12-31 11:48 01:14:15 1962160 500 145 20 335 +88.74 ± 16.82
64452 ncm-et-3 2018-12-31 11:48 01:14:16 1973294 500 154 27 319 +90.22 ± 17.77
64451 ncm-et-13 2018-12-31 11:48 01:13:48 1986155 500 136 30 334 +74.79 ± 17.1
64450 ncm-et-10 2018-12-31 11:48 01:15:02 1977223 500 143 24 333 +84.31 ± 17.02
64449 ncm-et-9 2018-12-31 11:48 01:13:50 1977786 500 148 15 337 +94.7 ± 16.57
64362 ncm-et-3 2018-12-30 13:31 01:12:57 1962156 500 133 23 344 +77.71 ± 16.44
64361 ncm-et-10 2018-12-30 13:30 01:13:42 1964161 500 149 25 326 +88.0 ± 17.39
64360 ncm-et-9 2018-12-30 13:29 01:13:32 1965538 500 157 23 320 +95.44 ± 17.63
64359 ncm-et-4 2018-12-30 13:28 01:15:09 1967077 500 150 18 332 +93.95 ± 16.91
64358 ncm-et-13 2018-12-30 13:26 01:13:15 1972192 500 128 24 348 +73.34 ± 16.27
64357 ncm-et-9 2018-12-30 12:15 01:13:18 1977849 500 155 20 325 +96.19 ± 17.31
64356 ncm-et-10 2018-12-30 12:15 01:14:02 1960778 500 145 30 325 +81.37 ± 17.54
64355 ncm-et-3 2018-12-30 12:15 01:14:55 1964767 500 148 29 323 +84.31 ± 17.62
64354 ncm-et-4 2018-12-30 12:14 01:13:15 1963224 500 164 23 313 +100.71 ± 17.97
64353 ncm-et-13 2018-12-30 12:13 01:12:05 1980522 500 129 23 348 +74.79 ± 16.24
64352 ncm-et-10 2018-12-30 11:00 01:13:45 1965081 500 153 26 321 +90.22 ± 17.65
64351 ncm-et-9 2018-12-30 10:59 01:14:20 1971254 500 148 14 338 +95.44 ± 16.49
64350 ncm-et-13 2018-12-30 10:59 01:12:41 1974677 500 134 21 345 +79.9 ± 16.34
64349 ncm-et-4 2018-12-30 10:59 01:13:31 1983339 500 146 16 338 +92.46 ± 16.55
64348 ncm-et-3 2018-12-30 10:59 01:14:14 1964303 500 154 24 322 +92.46 ± 17.56
10570 ncm-et-8 2018-03-21 14:03 00:35:07 1951019 232 77 13 142 +98.39 ± 27.09
10569 ncm-et-7 2018-03-21 14:01 00:38:04 2028360 258 76 7 175 +95.23 ± 22.88
10568 ncm-et-5 2018-03-21 14:00 00:38:04 2022956 257 72 10 175 +85.5 ± 23.08
10567 ncm-et-12 2018-03-21 14:00 00:39:01 1996935 262 70 14 178 +75.42 ± 23.15
10566 ncm-et-13 2018-03-21 13:59 00:39:27 2024427 273 78 12 183 +85.69 ± 22.83
10565 ncm-et-9 2018-03-21 13:59 00:39:56 2026390 274 90 12 172 +101.71 ± 24.21
10564 ncm-et-4 2018-03-21 13:59 00:40:00 1985720 277 87 12 178 +96.48 ± 23.58
10563 ncm-et-14 2018-03-21 13:58 00:40:19 2020999 265 88 12 165 +102.52 ± 24.81
10562 ncm-et-10 2018-03-21 13:58 00:40:20 2020348 283 72 14 197 +72.23 ± 21.65
10561 ncm-et-3 2018-03-21 13:58 00:40:08 2025408 274 66 8 200 +74.67 ± 20.47
10560 ncm-et-11 2018-03-21 13:58 00:40:31 2019534 270 83 11 176 +94.94 ± 23.53
10559 ncm-et-6 2018-03-21 13:58 00:40:53 2025735 287 78 12 197 +81.35 ± 21.7
10558 ncm-et-15 2018-03-21 13:58 00:40:46 2021985 288 74 12 202 +75.98 ± 21.16
10557 ncm-et-5 2018-03-21 12:45 01:14:07 2024101 500 146 18 336 +90.97 ± 16.71
10556 ncm-et-3 2018-03-21 12:45 01:12:06 2026718 500 140 32 328 +76.25 ± 17.44
10555 ncm-et-11 2018-03-21 12:45 01:11:54 2010989 500 135 24 341 +78.44 ± 16.62
10554 ncm-et-13 2018-03-21 12:45 01:13:02 2025572 500 149 18 333 +93.2 ± 16.86
10553 ncm-et-6 2018-03-21 12:44 01:11:44 2025081 500 127 25 348 +71.89 ± 16.29
10552 ncm-et-4 2018-03-21 12:44 01:12:31 2024591 500 136 23 341 +79.9 ± 16.6
10551 ncm-et-14 2018-03-21 12:44 01:12:24 2020347 500 133 26 341 +75.52 ± 16.67
10550 ncm-et-7 2018-03-21 12:44 01:14:35 1980363 500 159 20 321 +99.2 ± 17.5
10549 ncm-et-12 2018-03-21 12:44 01:13:39 1994339 500 137 19 344 +83.57 ± 16.34
10548 ncm-et-9 2018-03-21 12:44 01:12:47 2026555 500 133 21 346 +79.17 ± 16.29
10547 ncm-et-15 2018-03-21 12:44 01:11:47 2017909 500 141 17 342 +88.0 ± 16.38
10546 ncm-et-10 2018-03-21 12:44 01:12:25 2020348 500 136 20 344 +82.1 ± 16.37
10545 ncm-et-8 2018-03-21 12:44 01:17:28 1916146 500 150 20 330 +92.46 ± 17.06

Commit

Commit ID bf8b45fe6305c89a9a30f660de34164cf3bdcdf2
Author Andrey Neporada
Date 2016-12-03 08:37:07 UTC
Help GCC to optimize msb() to single instruction GCC compiles builtin_clzll to “63 ^ BSR”. BSR is processor instruction "Bit Scan Reverse". So old msb() function is basically 63 - 63 ^ BSR. Unfortunately, GCC fails to simplify this expression. Old function compiles to bsrq %rdi, %rdi movl $63, %eax xorq $63, %rdi subl %edi, %eax ret New function compiles to bsrq %rdi, %rax ret BTW, Clang compiles both function to the same (optimal) code. No functional change.
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