Dev Builds » 20230122-0955

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 11:13:18 1954956 3313 2861 4 448 +452.53 ± 16.1
ncm-et-4 11:12:51 1960126 3357 2913 4 440 +458.28 ± 16.25
ncm-et-9 11:13:22 1958665 3337 2872 9 456 +446.65 ± 15.97
ncm-et-10 11:13:25 1948812 3345 2865 4 476 +443.19 ± 15.61
ncm-et-13 11:13:05 1962435 3346 2898 5 443 +455.61 ± 16.2
ncm-et-15 11:13:27 1950482 3302 2884 5 413 +465.89 ± 16.78
20000 17293 31 2676 +453.53 ± 6.58

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
164250 ncm-et-15 2023-01-24 19:49 01:02:02 1956187 302 259 0 43 +446.19 ± 53.06
164249 ncm-et-3 2023-01-24 19:47 01:04:32 1954957 313 282 0 31 +513.25 ± 63.39
164248 ncm-et-9 2023-01-24 19:43 01:08:09 1957586 337 289 1 47 +442.27 ± 50.76
164247 ncm-et-10 2023-01-24 19:43 01:08:36 1961692 345 298 1 46 +450.52 ± 51.35
164246 ncm-et-13 2023-01-24 19:41 01:10:19 1946935 346 297 0 49 +447.2 ± 49.55
164245 ncm-et-4 2023-01-24 19:40 01:11:31 1959724 357 303 1 53 +431.41 ± 47.64
164244 ncm-et-15 2023-01-24 18:08 01:41:09 1949499 500 433 0 67 +457.52 ± 42.15
164243 ncm-et-3 2023-01-24 18:05 01:41:32 1954543 500 428 0 72 +444.08 ± 40.59
164242 ncm-et-10 2023-01-24 18:04 01:37:51 1959544 500 430 0 70 +449.35 ± 41.19
164241 ncm-et-9 2023-01-24 18:02 01:40:21 1962160 500 433 1 66 +454.76 ± 42.55
164240 ncm-et-13 2023-01-24 17:59 01:40:56 1959262 500 438 2 60 +466.04 ± 44.75
164239 ncm-et-4 2023-01-24 17:59 01:39:31 1963087 500 432 0 68 +454.76 ± 41.82
164238 ncm-et-15 2023-01-24 16:25 01:42:25 1955720 500 433 2 65 +452.04 ± 42.92
164237 ncm-et-10 2023-01-24 16:24 01:39:18 1960167 500 422 1 77 +426.65 ± 39.25
164236 ncm-et-9 2023-01-24 16:22 01:39:28 1960461 500 426 0 74 +438.95 ± 40.01
164235 ncm-et-3 2023-01-24 16:22 01:42:15 1951613 500 428 1 71 +441.5 ± 40.95
164234 ncm-et-4 2023-01-24 16:20 01:38:15 1968338 500 428 0 72 +444.08 ± 40.59
164233 ncm-et-13 2023-01-24 16:18 01:40:23 1966774 500 417 2 81 +412.8 ± 38.27
164232 ncm-et-4 2023-01-24 14:42 01:38:11 1962469 500 443 2 55 +481.1 ± 46.83
164231 ncm-et-15 2023-01-24 14:42 01:42:20 1942868 500 445 1 54 +490.71 ± 47.28
164230 ncm-et-10 2023-01-24 14:41 01:42:22 1953454 500 432 0 68 +454.76 ± 41.82
164229 ncm-et-9 2023-01-24 14:39 01:42:18 1953751 500 440 2 58 +471.92 ± 45.55
164228 ncm-et-3 2023-01-24 14:39 01:42:03 1952325 500 429 0 71 +446.7 ± 40.89
164227 ncm-et-13 2023-01-24 14:37 01:40:48 1966164 500 442 0 58 +484.24 ± 45.47
164226 ncm-et-4 2023-01-24 13:00 01:41:03 1956032 500 438 0 62 +471.92 ± 43.9
164225 ncm-et-15 2023-01-24 12:59 01:41:58 1946503 500 428 1 71 +441.5 ± 40.95
164224 ncm-et-3 2023-01-24 12:59 01:39:29 1965719 500 436 0 64 +466.03 ± 43.18
164223 ncm-et-10 2023-01-24 12:58 01:42:23 1923961 500 426 1 73 +436.43 ± 40.36
164222 ncm-et-9 2023-01-24 12:58 01:40:40 1958948 500 429 2 69 +441.5 ± 41.61
164221 ncm-et-13 2023-01-24 12:56 01:39:59 1969555 500 428 1 71 +441.5 ± 40.95
164220 ncm-et-4 2023-01-24 11:18 01:41:33 1955018 500 432 0 68 +454.76 ± 41.82
164219 ncm-et-15 2023-01-24 11:17 01:41:08 1950353 500 437 0 63 +468.95 ± 43.54
164218 ncm-et-9 2023-01-24 11:17 01:40:26 1961386 500 428 1 71 +441.5 ± 40.95
164217 ncm-et-10 2023-01-24 11:17 01:41:05 1935800 500 426 0 74 +438.95 ± 40.01
164216 ncm-et-13 2023-01-24 11:16 01:40:01 1974516 500 448 0 52 +504.32 ± 48.17
164215 ncm-et-3 2023-01-24 11:16 01:42:43 1950732 500 432 2 66 +449.35 ± 42.58
164214 ncm-et-13 2023-01-24 09:34 01:40:39 1953844 500 428 0 72 +444.08 ± 40.59
164213 ncm-et-4 2023-01-24 09:34 01:42:47 1956220 500 437 1 62 +466.04 ± 43.97
164212 ncm-et-9 2023-01-24 09:34 01:42:00 1956367 500 427 2 71 +436.43 ± 40.99
164211 ncm-et-3 2023-01-24 09:34 01:40:44 1954805 500 426 1 73 +436.43 ± 40.36
164210 ncm-et-10 2023-01-24 09:34 01:41:50 1947066 500 431 1 68 +449.35 ± 41.89
164209 ncm-et-15 2023-01-24 09:34 01:42:25 1952247 500 449 1 50 +504.32 ± 49.24

Commit

Commit ID 734315ff3099564c80737ad2be8121008870d28b
Author Stephen Touset
Date 2023-01-22 09:55:32 UTC
Remove precomputed SquareBB Bit-shifting is a single instruction, and should be faster than an array lookup on supported architectures. Besides (ever so slightly) speeding up the conversion of a square into a bitboard, we may see minor general performance improvements due to preserving more of the CPU's existing cache. passed STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 47280 W: 12469 L: 12271 D: 22540 Ptnml(0-2): 128, 4893, 13402, 5087, 130 https://tests.stockfishchess.org/tests/view/63c5cfe618c20f4929c5fe46 Small speedup locally: ``` Result of 20 runs ================== base (./stockfish.master ) = 1752135 +/- 10943 test (./stockfish.patch ) = 1763939 +/- 10818 diff = +11804 +/- 4731 speedup = +0.0067 P(speedup > 0) = 1.0000 CPU: 16 x AMD Ryzen 9 3950X 16-Core Processor ``` Closes https://github.com/official-stockfish/Stockfish/pull/4343 Bench: 4106793
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