Dev Builds » 20201107-1549

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 08:23:43 1962130 3325 2622 19 684 +365.75 +/- 13.01
ncm-et-4 08:23:17 1967771 3333 2618 16 699 +363.8 +/- 12.86
ncm-et-9 08:24:10 1968389 3340 2609 18 713 +359.46 +/- 12.73
ncm-et-10 08:23:49 1960251 3320 2642 17 661 +372.87 +/- 13.24
ncm-et-13 08:24:01 1962348 3345 2602 18 725 +356.64 +/- 12.63
ncm-et-15 08:23:27 1961036 3338 2637 27 674 +364.9 +/- 13.12
20001 15730 115 4156 +363.83 +/- 5.27

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
140463 ncm-et-10 2020-11-08 00:26 00:48:31 1962768 320 249 2 69 +356.1 +/- 41.44
140462 ncm-et-3 2020-11-08 00:25 00:49:45 1961228 325 250 2 73 +348.67 +/- 40.22
140461 ncm-et-4 2020-11-08 00:23 00:50:53 1964770 333 260 0 73 +363.89 +/- 40.04
140460 ncm-et-15 2020-11-08 00:23 00:51:21 1963532 338 258 2 78 +343.99 +/- 38.86
140459 ncm-et-9 2020-11-08 00:22 00:51:45 1972805 340 260 2 78 +345.15 +/- 38.86
140458 ncm-et-13 2020-11-08 00:21 00:52:53 1962613 345 265 3 77 +345.64 +/- 39.19
140457 ncm-et-3 2020-11-07 23:08 01:15:01 1963543 500 394 1 105 +368.59 +/- 33.35
140456 ncm-et-10 2020-11-07 23:08 01:16:11 1955567 500 402 3 95 +379.78 +/- 35.24
140455 ncm-et-15 2020-11-07 23:08 01:14:16 1961385 500 394 5 101 +361.43 +/- 34.18
140454 ncm-et-9 2020-11-07 23:06 01:15:10 1964924 500 390 5 105 +354.5 +/- 33.5
140453 ncm-et-4 2020-11-07 23:06 01:16:21 1969709 500 386 3 111 +351.11 +/- 32.49
140452 ncm-et-13 2020-11-07 23:06 01:14:35 1961381 500 381 3 116 +342.85 +/- 31.74
140451 ncm-et-10 2020-11-07 21:52 01:15:36 1958016 500 400 2 98 +377.87 +/- 34.64
140450 ncm-et-3 2020-11-07 21:51 01:16:22 1961842 500 385 3 112 +349.43 +/- 32.33
140449 ncm-et-15 2020-11-07 21:51 01:15:35 1965236 500 397 2 101 +372.25 +/- 34.1
140448 ncm-et-4 2020-11-07 21:51 01:14:11 1962616 500 393 3 104 +363.2 +/- 33.62
140447 ncm-et-9 2020-11-07 21:51 01:14:37 1970486 500 384 2 114 +349.43 +/- 31.99
140446 ncm-et-13 2020-11-07 21:50 01:15:09 1963687 500 389 4 107 +354.5 +/- 33.15
140445 ncm-et-10 2020-11-07 20:36 01:14:46 1962618 500 403 3 94 +381.7 +/- 35.44
140444 ncm-et-15 2020-11-07 20:35 01:14:24 1964917 500 399 3 98 +374.11 +/- 34.68
140443 ncm-et-4 2020-11-07 20:35 01:15:05 1969711 500 396 2 102 +370.41 +/- 33.92
140442 ncm-et-9 2020-11-07 20:34 01:15:18 1967705 500 398 1 101 +375.98 +/- 34.04
140441 ncm-et-3 2020-11-07 20:33 01:16:28 1961535 500 383 2 115 +347.77 +/- 31.84
140440 ncm-et-13 2020-11-07 20:33 01:15:52 1962302 500 407 2 91 +391.57 +/- 36.01
140439 ncm-et-15 2020-11-07 19:21 01:13:47 1973291 500 398 6 96 +366.78 +/- 35.09
140438 ncm-et-10 2020-11-07 19:18 01:16:32 1964458 500 388 2 110 +356.21 +/- 32.6
140437 ncm-et-4 2020-11-07 19:18 01:15:35 1968169 500 384 3 113 +347.77 +/- 32.18
140436 ncm-et-3 2020-11-07 19:18 01:14:41 1962150 500 414 5 81 +399.81 +/- 38.28
140435 ncm-et-9 2020-11-07 19:16 01:16:51 1967076 500 392 2 106 +363.2 +/- 33.24
140434 ncm-et-13 2020-11-07 19:16 01:15:40 1962305 500 384 3 113 +347.77 +/- 32.18
140433 ncm-et-15 2020-11-07 18:04 01:15:34 1973119 500 400 4 96 +374.11 +/- 35.07
140432 ncm-et-10 2020-11-07 18:02 01:14:46 1961240 500 400 0 100 +381.69 +/- 34.16
140431 ncm-et-4 2020-11-07 18:02 01:15:05 1967848 500 404 2 94 +385.59 +/- 35.4
140430 ncm-et-3 2020-11-07 18:01 01:15:15 1959390 500 400 3 97 +375.98 +/- 34.86
140429 ncm-et-13 2020-11-07 18:00 01:14:53 1963840 500 392 1 107 +364.98 +/- 33.02
140428 ncm-et-9 2020-11-07 17:59 01:16:22 1962462 500 391 2 107 +361.43 +/- 33.08
140427 ncm-et-4 2020-11-07 16:45 01:16:07 1971579 500 395 3 102 +366.78 +/- 33.96
140426 ncm-et-15 2020-11-07 16:44 01:18:30 1925777 500 391 5 104 +356.21 +/- 33.66
140425 ncm-et-3 2020-11-07 16:44 01:16:11 1965228 500 396 3 101 +368.59 +/- 34.13
140424 ncm-et-10 2020-11-07 16:44 01:17:27 1957094 500 400 5 95 +372.25 +/- 35.28
140423 ncm-et-13 2020-11-07 16:44 01:14:59 1960313 500 384 2 114 +349.43 +/- 31.99
140422 ncm-et-9 2020-11-07 16:44 01:14:07 1973270 500 394 4 102 +363.2 +/- 33.99

Commit

Commit ID ba35c88ab84b959d41a67b3d8fcb40adc6537ec8
Author Tomasz Sobczyk
Date 2020-11-07 15:49:49 UTC
AVX-512 for smaller affine and feature transforms. For the feature transformer the code is analogical to AVX2 since there was room for easy adaptation of wider simd registers. For the smaller affine transforms that have 32 byte stride we keep 2 columns in one zmm register. We also unroll more aggressively so that in the end we have to do 16 parallel horizontal additions on ymm slices each consisting of 4 32-bit integers. The slices are embedded in 8 zmm registers. These changes provide about 1.5% speedup for AVX-512 builds. Closes https://github.com/official-stockfish/Stockfish/pull/3218 No functional change.
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