| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Stéphane Nicolet
Date: Sun Oct 16 11:49:07 2022 +0200 Timestamp: 1665913747 Tweak the formula for NNUE complexity Joint work by Ofek Shochat and Stéphane Nicolet. passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 93288 W: 24996 L: 24601 D: 43691 Elo +1.47 Ptnml(0-2): 371, 10263, 24989, 10642, 379 https://tests.stockfishchess.org/tests/view/63448f4f4bc7650f07541987 passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 84168 W: 22771 L: 22377 D: 39020 Elo +1.63 Ptnml(0-2): 47, 8181, 25234, 8575, 47 https://tests.stockfishchess.org/tests/view/6345186d4bc7650f07542fbd ================ It seems there are two effects with this patch: effect A : If Stockfish is winning at root, we have optimism > 0 for all leaves in the search tree where Stockfish is to move. There, if (psq - nnue) > 0 (ie if the advantage is more materialistic than positional), then the product D = optimism * (psq - nnue) will be positive, nnueComplexity will increase, and the eval will increase from SF point of view. So the effect A is that if Stockfish is winning at root, she will slightly favor in the search tree (in other words, search more) the positions where she can convert her advantage via materialist means. effect B : If Stockfish is losing at root, we have optimism > 0 for all leaves in the search tree where the opponent is to move. There, if (psq - nnue) < 0 (ie if the opponent advantage is more positional than materialistic), then the product D = optimism * (psq-nnue) will be negative, nnueComplexity will decrease, and the eval will decrease from the opponent point of view. So the effect B is that Stockfish will slightly favor in the search tree (search more) the branches where she can defend by slowly reducing the opponent positional advantage. ================= closes https://github.com/official-stockfish/Stockfish/pull/4195 bench: 4673898 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Dubslow
Date: Sun Oct 16 11:45:16 2022 +0200 Timestamp: 1665913516 Remove depth condition from razoring The eval condition depends on depth anyways, so this patch is nearly (not quite) non-functional passed STC: https://tests.stockfishchess.org/tests/view/63428169fb7ccb2ea9be2629 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 185992 W: 49612 L: 49558 D: 86822 Elo +0.10 Ptnml(0-2): 618, 19956, 51842, 19914, 666 passed LTC: https://tests.stockfishchess.org/tests/view/634418b14bc7650f07540760 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 126816 W: 34147 L: 34043 D: 58626 Elo +0.28 Ptnml(0-2): 74, 11941, 39281, 12031, 81 closes https://github.com/official-stockfish/Stockfish/pull/4196 bench 4148700 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mstembera
Date: Sun Oct 16 11:42:19 2022 +0200 Timestamp: 1665913339 Optimize make_index() using templates and lookup tables. https://tests.stockfishchess.org/tests/view/634517e54bc7650f07542f99 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 642672 W: 171819 L: 170658 D: 300195 Elo +0.63 Ptnml(0-2): 2278, 68077, 179416, 69336, 2229 this also introduces `-flto-partition=one` as suggested by MinetaS (Syine Mineta) to avoid linking errors due to LTO on 32 bit mingw. This change was tested in isolation as well https://tests.stockfishchess.org/tests/view/634aacf84bc7650f0755188b LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 119352 W: 31986 L: 31862 D: 55504 Elo +0.36 Ptnml(0-2): 439, 12624, 33400, 12800, 413 closes https://github.com/official-stockfish/Stockfish/pull/4199 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Stefan Geschwentner
Date: Sat Oct 8 18:09:02 2022 +0200 Timestamp: 1665245342 Tweak history initialization Simplify initialization of continuation history by using everywhere the same starting value. STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 90952 W: 24312 L: 24153 D: 42487 Elo +0.61 Ptnml(0-2): 356, 10168, 24290, 10285, 377 https://tests.stockfishchess.org/tests/view/633948f235f43d649ff61fd0 LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 162416 W: 43540 L: 43466 D: 75410 Elo +0.16 Ptnml(0-2): 77, 16289, 48417, 16333, 92 https://tests.stockfishchess.org/tests/view/6339ee8a35f43d649ff63986 closes https://github.com/official-stockfish/Stockfish/pull/4186 Bench: 4156027 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Giacomo Lorenzetti
Date: Sat Oct 8 18:07:30 2022 +0200 Timestamp: 1665245250 Remove old line in "Futility pruning for captures" The line is no longer needed after https://github.com/official-stockfish/Stockfish/commit/910cf8b21839eb9f1991934a5436eea112021723. This patch incidentally applies "Futility Pruning for Captures" also in case of en-passant, changing the bench signature. Passed STC: https://tests.stockfishchess.org/tests/view/6332c1f1208c26088697b731 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 68760 W: 18440 L: 18256 D: 32064 Elo +0.93 Ptnml(0-2): 267, 7530, 18595, 7728, 260 Passed LTC: https://tests.stockfishchess.org/tests/view/633312e9208c26088697c59b LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 455552 W: 121910 L: 122123 D: 211519 Elo -0.16 Ptnml(0-2): 253, 45439, 136600, 45236, 248 closes https://github.com/official-stockfish/Stockfish/pull/4185 Bench: 4374521 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Wed Oct 5 22:59:05 2022 +0200 Timestamp: 1665003545 Revert "Mix alpha and statScore for reduction" This reverts commit 8bab09749dd00951bfa9c5f89f6e35bded76c8a9. In this form the patch reduces mate finding effectiveness, as the large alpha value has negative influence on the reductions. see also https://github.com/official-stockfish/Stockfish/pull/4183 Bench: 4114228 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Tue Oct 4 01:07:27 2022 +0200 Timestamp: 1664838447 Mix alpha and statScore for reduction Idea by @xoto10, and tuning by @FauziAkram. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 57832 W: 15540 L: 15199 D: 27093 Elo +2.05 Ptnml(0-2): 207, 6343, 15477, 6680, 209 https://tests.stockfishchess.org/tests/view/6338db6f35f43d649ff60fdc passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 50968 W: 13770 L: 13440 D: 23758 Elo +2.25 Ptnml(0-2): 25, 4905, 15306, 5211, 37 https://tests.stockfishchess.org/tests/view/6339777035f43d649ff62686 Links to the tuning sessions: https://tests.stockfishchess.org/tests/view/63345725a004bed9a2e47b28 https://tests.stockfishchess.org/tests/view/63345728a004bed9a2e47b2a closes https://github.com/official-stockfish/Stockfish/pull/4183 Bench: 4426602 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: disservin
Date: Mon Oct 3 11:50:31 2022 +0200 Timestamp: 1664790631 Use less reduction for escaping moves This patch reuses the threatenedPieces variable (which is calculated in movepicker) to reduce less in the search tree the moves which escape a capture. passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 314352 W: 84042 L: 83328 D: 146982 Elo +0.79 Ptnml(0-2): 1105, 35084, 84207, 35552, 1228 https://tests.stockfishchess.org/tests/view/63355f37a004bed9a2e4a17f passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 90752 W: 24556 L: 24147 D: 42049 Elo +1.57 Ptnml(0-2): 59, 8855, 27123, 9296, 43 https://tests.stockfishchess.org/tests/view/63383a7735f43d649ff5fa8b closes https://github.com/official-stockfish/Stockfish/pull/4181 bench: 4114228 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: peregrineshahin
Date: Tue Sep 27 07:54:36 2022 +0200 Timestamp: 1664258076 Simplify both position calls in useClassical Simplify the use of classical evaluation when using default settings to only be dependent on piece count and decisive PSQ passed STC: https://tests.stockfishchess.org/tests/view/632d32a7006ef9eb96d86ce9 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 108048 W: 28904 L: 28763 D: 50381 Elo +0.45 Ptnml(0-2): 383, 12060, 29006, 12183, 392 passed LTC: https://tests.stockfishchess.org/tests/view/632d705a006ef9eb96d87649 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 76600 W: 20671 L: 20516 D: 35413 Elo +0.70 Ptnml(0-2): 34, 7533, 23023, 7664, 46 Inspired by sorais, credit to him. closes https://github.com/official-stockfish/Stockfish/pull/4177 bench 4173163 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Brad Knox
Date: Tue Sep 27 07:52:38 2022 +0200 Timestamp: 1664257958 Update README.md Adding some svg icons and additional information, insert links as references closes https://github.com/official-stockfish/Stockfish/pull/4176 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Torsten Hellwig
Date: Tue Sep 27 07:48:05 2022 +0200 Timestamp: 1664257685 Always output hashfull This removes the restriction that no hashfull information is printed within the first second of a search. On modern systems, a non-zero value is returned within 6 ms with default settings. passed STC: https://tests.stockfishchess.org/tests/view/63277b08b9c0caa5f4a798e4 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 290096 W: 77505 L: 77561 D: 135030 Elo -0.07 Ptnml(0-2): 1008, 30713, 81592, 30797, 938 closes https://github.com/official-stockfish/Stockfish/pull/4174 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mstembera
Date: Tue Sep 27 07:44:46 2022 +0200 Timestamp: 1664257486 Simplify EVASIONS scoring remove some multipliers & adjust, doesn't change the move ordering STC https://tests.stockfishchess.org/tests/view/6325c1c9b9c0caa5f4a759ae LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 192760 W: 51528 L: 51482 D: 89750 Elo +0.08 Ptnml(0-2): 642, 20490, 54148, 20380, 720 Credit to locutus2 closes https://github.com/official-stockfish/Stockfish/pull/4171 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mstembera
Date: Sat Sep 17 09:30:52 2022 +0200 Timestamp: 1663399852 Prioritize checks in movepicker give a little bonus for moving pieces to squares where they give check STC: https://tests.stockfishchess.org/tests/view/631da742162491686d2e40b5 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 80072 W: 21753 L: 21368 D: 36951 Elo +1.67 Ptnml(0-2): 421, 8876, 21075, 9225, 439 LTC: https://tests.stockfishchess.org/tests/view/631dd9e6b85daa436625de1d LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 263480 W: 70916 L: 70158 D: 122406 Elo +1.00 Ptnml(0-2): 322, 26156, 78029, 26908, 325 similar ideas have been tested by Viz and Guenther closes https://github.com/official-stockfish/Stockfish/pull/4165 bench: 4326572 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: atumanian
Date: Sat Sep 17 09:13:07 2022 +0200 Timestamp: 1663398787 Simplify trend and optimism. This patch simplifies the formulas used to compute the trend and optimism values before each search iteration. As a side effect, this removes the parameters which make the relationship between the displayed evaluation value and the expected game result asymmetric. I've also provided links to the results of isotonic regression analysis of the relationship between the evaluation and game result (statistical data and a graph) for both tests, which demonstrate that the new version has a more symmetric relationship: STC: [Data and graph](https://github.com/official-stockfish/Stockfish/discussions/4150#discussioncomment-3548954) LTC: [Data and graph](https://github.com/official-stockfish/Stockfish/discussions/4150#discussioncomment-3626311) See also https://github.com/official-stockfish/Stockfish/issues/4142 passed STC: https://tests.stockfishchess.org/tests/view/6313f44b8202a039920e27e6 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 108016 W: 28903 L: 28760 D: 50353 Elo +0.46 Ptnml(0-2): 461, 12075, 28850, 12104, 518 passed LTC: https://tests.stockfishchess.org/tests/view/631de45db85daa436625dfe6 LLR: 3.01 (-2.94,2.94) <-1.75,0.25> Total: 34792 W: 9412 L: 9209 D: 16171 Elo +2.03 Ptnml(0-2): 24, 3374, 10397, 3577, 24 Furthermore, this does not measurably impact Elo strength against weaker engines, as demonstrated in a match of master and patch vs SF13: This patch vs SF 13: https://tests.stockfishchess.org/tests/view/631fa34ae1612778c344c6eb Elo: 141.66 +-1.2 (95%) LOS: 100.0% Total: 100000 W: 48182 L: 9528 D: 42290 Elo +141.66 Ptnml(0-2): 96, 1426, 13277, 30130, 5071 nElo: 284.13 +-3.3 (95%) PairsRatio: 23.13 Master vs SF 13: https://tests.stockfishchess.org/tests/view/631fa3ece1612778c344c6ff Elo: 143.26 +-1.2 (95%) LOS: 100.0% Total: 100000 W: 48525 L: 9479 D: 41996 Elo +143.26 Ptnml(0-2): 94, 1537, 13098, 29771, 5500 nElo: 281.70 +-3.3 (95%) PairsRatio: 21.63 closes: https://github.com/official-stockfish/Stockfish/pull/4163 Bench: 4425574 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Sat Sep 17 09:05:35 2022 +0200 Timestamp: 1663398335 Explicitly annotate a few variables as [[maybe_unused]], avoiding the (void)foo trick. closes https://github.com/official-stockfish/Stockfish/pull/4162 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mstembera
Date: Sun Sep 11 14:19:57 2022 +0200 Timestamp: 1662898797 Optimize AVX2 path in NNUE evaluation always selecting AffineTransform specialization for small inputs. A related patch was tested as Initially tested as a simplification STC https://tests.stockfishchess.org/tests/view/6317c3f437f41b13973d6dff LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 58072 W: 15619 L: 15425 D: 27028 Elo +1.16 Ptnml(0-2): 241, 6191, 15992, 6357, 255 Elo gain speedup test STC https://tests.stockfishchess.org/tests/view/63181c1b37f41b13973d79dc LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 184496 W: 49922 L: 49401 D: 85173 Elo +0.98 Ptnml(0-2): 851, 19397, 51208, 19964, 828 and this patch gained in testing speedup = +0.0071 P(speedup > 0) = 1.0000 on CPU: 16 x AMD Ryzen 9 3950X closes https://github.com/official-stockfish/Stockfish/pull/4158 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Sun Sep 11 14:15:54 2022 +0200 Timestamp: 1662898554 Do less singular extensions for former PVnode Patch is a reintroduction of logic what was simplified a while ago in a slightly different form. Do bigger extension offset in case of non-pv node having a pv. passed STC https://tests.stockfishchess.org/tests/view/631977c048f27688a06e66d5 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 23296 W: 6404 L: 6108 D: 10784 Elo +4.41 Ptnml(0-2): 88, 2539, 6118, 2795, 108 passed LTC https://tests.stockfishchess.org/tests/view/631989cb48f27688a06e696c LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 235592 W: 63890 L: 63188 D: 108514 Elo +1.04 Ptnml(0-2): 275, 23392, 69804, 24006, 319 closes https://github.com/official-stockfish/Stockfish/pull/4159 Bench: 3993611 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Dubslow
Date: Sun Sep 11 14:13:24 2022 +0200 Timestamp: 1662898404 Razor also on PV nodes Simplification introduced by xoto10 blue LTC vs new master: https://tests.stockfishchess.org/tests/view/631ad4ef9cfa5e9b648d1b4e LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 59184 W: 16002 L: 15828 D: 27354 Elo +1.02 Ptnml(0-2): 65, 5777, 17747, 5925, 78 blue STC vs old master: https://tests.stockfishchess.org/tests/view/6306b87b902a848543334c25 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 213944 W: 57184 L: 57159 D: 99601 Elo +0.04 Ptnml(0-2): 877, 23448, 58331, 23405, 911 blue LTC vs old master: https://tests.stockfishchess.org/tests/view/63070e6b902a8485433357e7 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 192080 W: 52050 L: 52006 D: 88024 Elo +0.08 Ptnml(0-2): 232, 18981, 57611, 18943, 273 closes https://github.com/official-stockfish/Stockfish/pull/4147 bench 4208975 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Sun Sep 11 14:05:39 2022 +0200 Timestamp: 1662897939 Further LTC tuning of search parameters Tuning done by bigpenor with some hand adjustments on top by Viz. Had a good performance at fixed games 180+1.8: https://tests.stockfishchess.org/tests/view/631836b437f41b13973d7da1 Elo: 1.35 +-1.2 (95%) LOS: 98.6% Total: 60000 W: 16422 L: 16189 D: 27389 Elo +1.35 Ptnml(0-2): 39, 5335, 18992, 5622, 12 nElo: 3.13 +-2.8 (95%) PairsRatio: 1.05 Passed 60+0.6 8 threads SPRT: https://tests.stockfishchess.org/tests/view/631ba0ff74bc4fe483a99db3 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 29712 W: 8301 L: 8039 D: 13372 Elo +3.06 Ptnml(0-2): 12, 2318, 9925, 2598, 3 closes https://github.com/official-stockfish/Stockfish/pull/4160 bench 3938073 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Wed Sep 7 07:38:04 2022 +0200 Timestamp: 1662529084 VLTC tuning Tuning some parameters that scale well with longer time control: Failed STC: https://tests.stockfishchess.org/tests/view/6313424d8202a039920e130a LLR: -2.94 (-2.94,2.94) <-1.75,0.25> Total: 42680 W: 11231 L: 11540 D: 19909 Elo -2.52 Ptnml(0-2): 191, 5008, 11232, 4737, 172 Passed LTC: https://tests.stockfishchess.org/tests/view/6311e2cd874169ca52ae7933 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 53448 W: 14782 L: 14437 D: 24229 Elo +2.24 Ptnml(0-2): 101, 5214, 15740, 5577, 92 Passed VLTC: https://tests.stockfishchess.org/tests/view/6312530cfa99a92e3002c927 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 123336 W: 33465 L: 33007 D: 56864 Elo +1.29 Ptnml(0-2): 38, 11466, 38204, 11920, 40 closes https://github.com/official-stockfish/Stockfish/pull/4154 Bench: 5609606 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Wed Sep 7 07:32:53 2022 +0200 Timestamp: 1662528773 Provide network download fallback in case the base infrastructure for providing the networks https://tests.stockfishchess.org/nns is down, use an alternate github repo for downloading networks during the build. fixes #4149 fixes #4140 closes https://github.com/official-stockfish/Stockfish/pull/4151 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Wed Sep 7 07:31:48 2022 +0200 Timestamp: 1662528708 Increase the maximum number of threads to 1024 relatively soon servers with 512 threads will be available 'quite commonly', anticipate even more threads, and increase our current maximum from 512 to 1024. closes https://github.com/official-stockfish/Stockfish/pull/4152 No functional change. see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: dav1312
Date: Mon Aug 29 19:15:14 2022 +0200 Timestamp: 1661793314 Disable ARM CI tests Temporarily disable ARM CI tests until a mitigation is implemented closes https://github.com/official-stockfish/Stockfish/pull/4148 No functional change. see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mstembera
Date: Wed Aug 17 19:56:15 2022 +0200 Timestamp: 1660758975 Make key_after() more consistent with key() STC: https://tests.stockfishchess.org/tests/view/62f8547123d42b50a8dac674 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 176640 W: 47699 L: 47189 D: 81752 Elo +1.00 Ptnml(0-2): 776, 18599, 49129, 18971, 845 A bug fix plus non functional speed optimization. Position::key_after(Move m) is now consistent with Position::key() thus prefetching correct TT entries which speeds things up. Related PR #3759 closes https://github.com/official-stockfish/Stockfish/pull/4130 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Joost VandeVondele
Date: Mon Aug 15 18:01:37 2022 +0200 Timestamp: 1660579297 Simplify the use of classical eval no benefit of the fallback term (exercised rarely). Cleanup the associated code. passed STC https://tests.stockfishchess.org/tests/view/62f62c2b6f0a08af9f776367 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 67832 W: 18334 L: 18148 D: 31350 Elo +0.95 Ptnml(0-2): 369, 7171, 18609, 7439, 328 passed LTC https://tests.stockfishchess.org/tests/view/62f68beb6f0a08af9f77710e LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 104664 W: 28363 L: 28233 D: 48068 Elo +0.43 Ptnml(0-2): 169, 10162, 31511, 10350, 140 closes https://github.com/official-stockfish/Stockfish/pull/4132 Bench: 6079565 see source |