| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: proukornew
Date: Sat Jun 19 11:22:30 2021 +0200 Timestamp: 1624094550 Fix for Cygwin's environment build-profile (fixed) The Cygwin environment has two g++ compilers, each with a different problem for compiling Stockfish at the moment: (a) g++.exe : full posix build compiler, linked to cygwin dll. => This one has a problem embedding the net. (b) x86_64-w64-mingw32-g++.exe : native Windows build compiler. => This one manages to embed the net, but has a problem related to libgcov when we use the profile-build target of Stockfish. This patch solves the problem for compiler (b), so that our recommended command line if you want to build an optimized version of Stockfish on Cygwin becomes something like the following (you can change the ARCH value to whatever you want, but note the COMP and CXX variables pointing at the right compiler): ``` make -j profile-build ARCH=x86-64-modern COMP=mingw CXX=x86_64-w64-mingw32-c++.exe ``` closes https://github.com/official-stockfish/Stockfish/pull/3569 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 Windows 32 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: Fri Jun 18 23:50:26 2021 +0200 Timestamp: 1624053026 Make net nn-50144f835024.nnue the default trained with the Python command c:\nnue>python train.py i:/bin/all.binpack i:/bin/all.binpack --gpus 1 --threads 4 --num-workers 30 --batch-size 16384 --progress_bar_refresh_rate 300 --smart-fen-skipping --random-fen-skipping 3 --features=HalfKAv2^ --lambda=1.0 --max_epochs=440 --seed %random%%random% --default_root_dir exp/run_8 --resume-from-model ./pt/nn-6ad41a9207d0.pt ` all.binpack equaled 4 parts Wrong_NNUE_2.binpack https://drive.google.com/file/d/1seGNOqcVdvK_vPNq98j-zV3XPE5zWAeq/view?usp=sharing plus two parts of Training_Data.binpack https://drive.google.com/file/d/1RFkQES3DpsiJqsOtUshENtzPfFgUmEff/view?usp=sharing Each set was concatenated together - make one large Wrong_NNUE 2 binpack and one large Training_Data of approximate size. They were then interleaved together. The idea was to give Wrong_NNUE.binpack closer to equal weighting with the Training _Data binpack . nn-6ad41a9207d0.pt was derived from a net vondele ran which passed STC quickly, but faltered in LTC. https://tests.stockfishchess.org/tests/view/60cba666457376eb8bcab443 STC: LLR: 2.95 (-2.94,2.94) <-0.50,2.50> Total: 18792 W: 2068 L: 1889 D: 14835 Elo +3.31 Ptnml(0-2): 82, 1480, 6117, 1611, 106 https://tests.stockfishchess.org/tests/view/60ccda8b457376eb8bcab568 LTC: LLR: 2.94 (-2.94,2.94) <0.50,3.50> Total: 11376 W: 574 L: 454 D: 10348 Elo +3.67 Ptnml(0-2): 4, 412, 4747, 510, 15 https://tests.stockfishchess.org/tests/view/60ccf952457376eb8bcab58d closes https://github.com/official-stockfish/Stockfish/pull/3568 Bench: 4900906 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Tomasz Sobczyk
Date: Fri Jun 18 22:05:56 2021 +0200 Timestamp: 1624046756 Add basic github workflow move to github actions to replace travis CI. First version, testing on linux using gcc and clang. gcc build with sanitizers and valgrind. 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: SFisGOD
Date: Fri Jun 18 21:29:14 2021 +0200 Timestamp: 1624044554 Update default net to nn-aa9d7eeb397e.nnue Optimization of vondele's nn-33c9d39e5eb6.nnue using SPSA https://tests.stockfishchess.org/tests/view/60ca68be457376eb8bcab28b Setting: ck values are default based on how large the parameters are The new values for this net are the raw values at the end of the tuning (80k games) The significant changes are in buckets 1 and 2 (5-12 pieces) so the main difference is in playing endgames if we compare it to nn-33c9. There is also change in bucket 7 (29-32 pieces) but not as substantial as the changes in buckets 1 and 2. If we interpret the changes based on an experiment a few months ago, this new net plays more optimistically during endgames and less optimistically during openings. STC: LLR: 2.93 (-2.94,2.94) <-0.50,2.50> Total: 49504 W: 4246 L: 4053 D: 41205 Elo +1.35 Ptnml(0-2): 140, 3282, 17749, 3407, 174 https://tests.stockfishchess.org/tests/view/60cbd752457376eb8bcab478 LTC: LLR: 2.95 (-2.94,2.94) <0.50,3.50> Total: 88720 W: 4926 L: 4651 D: 79143 Elo +1.08 Ptnml(0-2): 105, 4048, 35793, 4295, 119 https://tests.stockfishchess.org/tests/view/60cc7828457376eb8bcab4fa closes https://github.com/official-stockfish/Stockfish/pull/3566 Bench: 4758885 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: ap
Date: Fri Jun 18 20:00:13 2021 +0200 Timestamp: 1624039213 New default net nn-3b20abec10c1.nnue This net was created by @pleomati, who manually edited with an hex editor 10 values randomly chosen in the LCSFNet10 net (nn-6ad41a9207d0.nnue) to create this one. The LCSFNet10 net was trained by Joost VandeVondele from a dataset combining Stockfish games and Leela games (16x10^9 positions from SF self-play at depth 9, and 6.3x10^9 positions from Leela games, so overall 72% of Stockfish positions and 28% of Leela positions). passed STC 10+0.1: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 50888 W: 5881 L: 5654 D: 39353 Elo +1.55 Ptnml(0-2): 281, 4290, 16085, 4497, 291 https://tests.stockfishchess.org/tests/view/60cbfa68457376eb8bcab49a passed LTC 60+0.6: LLR: 2.94 (-2.94,2.94) <0.50,3.50> Total: 25480 W: 1498 L: 1338 D: 22644 Elo +2.18 Ptnml(0-2): 36, 1155, 10193, 1325, 31 https://tests.stockfishchess.org/tests/view/60cc4af8457376eb8bcab4d4 closes https://github.com/official-stockfish/Stockfish/pull/3564 Bench: 4904930 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Thu Jun 17 18:10:01 2021 +0200 Timestamp: 1623946201 Revert "Fix for Cygwin's environment build-profile" This reverts commit "Fix for Cygwin's environment build-profile", as it was giving errors for "make clean" on some Windows environments. See comments in https://github.com/official-stockfish/Stockfish/commit/68bf362ea2385a641be9f5ed9ce2acdf55a1ecf1 Possibly somebody can propose a solution that would fix Cygwin builds and not break on other system too, stay tuned! :-) 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: bmc4
Date: Thu Jun 17 02:08:33 2021 +0200 Timestamp: 1623888513 Simplify reduction when best move doesn't change frequently. STC: LLR: 2.94 (-2.94,2.94) <-2.50,0.50> Total: 40400 W: 3468 L: 3377 D: 33555 Elo +0.78 Ptnml(0-2): 134, 2734, 14388, 2795, 149 https://tests.stockfishchess.org/tests/view/60c93e5a457376eb8bcab15f LTC: LLR: 2.94 (-2.94,2.94) <-2.50,0.50> Total: 34200 W: 1190 L: 1128 D: 31882 Elo +0.63 Ptnml(0-2): 22, 998, 15001, 1054, 25 https://tests.stockfishchess.org/tests/view/60c96a1a457376eb8bcab180 closes https://github.com/official-stockfish/Stockfish/pull/3559 bench: 5629669 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: proukornew
Date: Thu Jun 17 01:14:20 2021 +0200 Timestamp: 1623885260 Fix for Cygwin's environment build-profile The Cygwin environment has two g++ compilers, each with a different problem for compiling Stockfish at the moment: (a) g++.exe : full posix build compiler, linked to cygwin dll. => This one has a problem embedding the net. (b) x86_64-w64-mingw32-g++.exe : native Windows build compiler. => This one manages to embed the net, but has a problem related to libgcov when we use the profile-build target of Stockfish. This patch solves the problem for compiler (b), so that our recommended command line if you want to build an optimized version of Stockfish on Cygwin becomes something like the following (you can change the ARCH value to whatever you want, but note the COMP and CXX variables pointing at the right compiler): ``` make -j profile-build ARCH=x86-64-modern COMP=mingw CXX=x86_64-w64-mingw32-c++.exe ``` closes https://github.com/official-stockfish/Stockfish/pull/3463 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 Windows 32 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: Tue Jun 15 22:08:40 2021 +0200 Timestamp: 1623787720 New default net nn-33c9d39e5eb6.nnue As the previous net, this net is trained on Leela games as provided by borg. See also https://lczero.org/blog/2021/06/the-importance-of-open-data/ The particular data set, which is a mix of T60 and T74 data, is now available as a single binpack: https://drive.google.com/file/d/1RFkQES3DpsiJqsOtUshENtzPfFgUmEff/view?usp=sharing The training command was: python train.py ../../training_data_pylon.binpack ../../training_data_pylon.binpack --gpus 1 --threads 2 --num-workers 2 --batch-size 16384 --progress_bar_refresh_rate 300 --smart-fen-skipping --random-fen-skipping 10 --features=HalfKAv2^ --lambda=1.0 --max_epochs=440 --seed $RANDOM --default_root_dir exp/run_2 passed STC: https://tests.stockfishchess.org/tests/view/60c887cb457376eb8bcab054 LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 12792 W: 1483 L: 1311 D: 9998 Elo +4.67 Ptnml(0-2): 62, 989, 4131, 1143, 71 passed LTC: https://tests.stockfishchess.org/tests/view/60c8e5c4457376eb8bcab0f0 LLR: 2.95 (-2.94,2.94) <0.50,3.50> Total: 11272 W: 601 L: 477 D: 10194 Elo +3.82 Ptnml(0-2): 9, 421, 4657, 535, 14 also had strong LTC performance against another strong net of the series: https://tests.stockfishchess.org/tests/view/60c8c40d457376eb8bcab0c6 closes https://github.com/official-stockfish/Stockfish/pull/3557 Bench: 5032320 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: J. Oster
Date: Mon Jun 14 17:28:30 2021 +0200 Timestamp: 1623684510 Fix a rare case of wrong TB ranking of a root move leading to a 3-fold repetition. With this small fix a draw ranking and thus a draw score is being applied. This works for both, ranking by dtz or wdl tables. Fixes https://github.com/official-stockfish/Stockfish/issues/3542 (No functional change without TBs.) Bench: 4877339 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Tomasz Sobczyk
Date: Mon Jun 14 11:22:08 2021 +0200 Timestamp: 1623662528 Reduce the number of accumulator states Reduce from 3 to 2. Make the intent of the states clearer. STC: https://tests.stockfishchess.org/tests/view/60c50111457376eb8bcaad03 LLR: 2.95 (-2.94,2.94) <-2.50,0.50> Total: 61888 W: 5007 L: 4944 D: 51937 Elo +0.35 Ptnml(0-2): 164, 3947, 22649, 4030, 154 LTC: https://tests.stockfishchess.org/tests/view/60c52b1c457376eb8bcaad2c LLR: 2.94 (-2.94,2.94) <-2.50,0.50> Total: 20248 W: 688 L: 618 D: 18942 Elo +1.20 Ptnml(0-2): 7, 551, 8946, 605, 15 closes https://github.com/official-stockfish/Stockfish/pull/3548 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: JWmer
Date: Mon Jun 14 09:24:07 2021 +0200 Timestamp: 1623655447 Update default net to nn-8e47cf062333.nnue This net is the result of training on data used by the Leela project. More precisely, we shuffled T60 and T74 data kindly provided by borg (for different Tnn, the data is a result of Leela selfplay with differently sized Leela nets). The data is available at vondele's google drive: https://drive.google.com/drive/folders/1mftuzYdl9o6tBaceR3d_VBQIrgKJsFpl. The Leela data comes in small chunks of .binpack files. To shuffle them, we simply used a small python script to randomly rename the files, and then concatenated them using `cat`. As validation data we picked a file of T60 data. We will further investigate T74 data. The training for the NNUE architecture used 200 epochs with the Python trainer from the Stockfish project. Unlike the previous run we tried with this data, this run does not have adjusted scaling — not because we didn't want to, but because we forgot. However, this training randomly skips 40% more positions than previous run. The loss was very spiky and decreased slower than it does usually. Training loss: https://github.com/official-stockfish/images/blob/main/training-loss-8e47cf062333.png Validation loss: https://github.com/official-stockfish/images/blob/main/validation-loss-8e47cf062333.png This is the exact training command: python train.py --smart-fen-skipping --random-fen-skipping 14 --batch-size 16384 --threads 4 --num-workers 4 --gpus 1 trainingdata\training_data.binpack validationdata\val.binpack --- 10k STC result: ELO: 3.61 +-3.3 (95%) LOS: 98.4% Total: 10000 W: 1241 L: 1137 D: 7622 Elo +3.61 Ptnml(0-2): 68, 841, 3086, 929, 76 https://tests.stockfishchess.org/tests/view/60c67e50457376eb8bcaae70 10k LTC result: ELO: 2.71 +-2.4 (95%) LOS: 98.8% Total: 10000 W: 659 L: 581 D: 8760 Elo +2.71 Ptnml(0-2): 22, 485, 3900, 579, 14 https://tests.stockfishchess.org/tests/view/60c69deb457376eb8bcaae98 Passed LTC: LLR: 2.93 (-2.94,2.94) <0.50,3.50> Total: 9648 W: 685 L: 545 D: 8418 Elo +5.04 Ptnml(0-2): 22, 448, 3740, 596, 18 https://tests.stockfishchess.org/tests/view/60c6d41c457376eb8bcaaecf --- closes https://github.com/official-stockfish/Stockfish/pull/3550 Bench: 4877339 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Tomasz Sobczyk
Date: Sun Jun 13 13:10:56 2021 +0200 Timestamp: 1623582656 Register count for feature transformer Compute optimal register count for feature transformer accumulation dynamically. This also introduces a change where AVX512 would only use 8 registers instead of 16 (now possible due to a 2x increase in feature transformer size). closes https://github.com/official-stockfish/Stockfish/pull/3543 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Vizvezdenec
Date: Sun Jun 13 12:00:20 2021 +0200 Timestamp: 1623578420 Do less LMR extensions This patch restricts LMR extensions (of non-transposition table moves) from being used when the transposition table move was extended by two plies via singular extension. This may serve to limit search explosions in certain positions. This makes a lot of sense because the precondition for the tt-move to have been singular extended by two plies is that the result of the alternate search (with excluded the tt-move) has been a hard fail low: it is natural to later search less for non tt-moves in this situation. The current state of depth/extensions/reductions management is getting quite tricky in our search algo, see https://github.com/official-stockfish/Stockfish/pull/3546#issuecomment-860174549 for some discussion. Suggestions welcome! Passed STC https://tests.stockfishchess.org/tests/view/60c3f293457376eb8bcaac8d LLR: 2.95 (-2.94,2.94) <-0.50,2.50> Total: 117984 W: 9698 L: 9430 D: 98856 Elo +0.79 Ptnml(0-2): 315, 7708, 42703, 7926, 340 passed LTC https://tests.stockfishchess.org/tests/view/60c46ea5457376eb8bcaacc7 LLR: 2.97 (-2.94,2.94) <0.50,3.50> Total: 11280 W: 401 L: 302 D: 10577 Elo +3.05 Ptnml(0-2): 2, 271, 4998, 364, 5 closes https://github.com/official-stockfish/Stockfish/pull/3546 Bench: 4709974 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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 Jun 13 10:02:43 2021 +0200 Timestamp: 1623571363 Clarify use of UCI options Update README.md to clarify use of UCI options closes https://github.com/official-stockfish/Stockfish/pull/3540 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Tomasz Sobczyk
Date: Sun Jun 13 09:39:03 2021 +0200 Timestamp: 1623569943 Read NNUE net faster Load feature transformer weights in bulk on little-endian machines. This is in particular useful to test new nets with c-chess-cli, see https://github.com/lucasart/c-chess-cli/issues/44 ``` $ time ./stockfish.exe uci Before : 0m0.914s After : 0m0.483s ``` 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 Windows 32 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: Fri Jun 11 20:33:24 2021 +0200 Timestamp: 1623436404 Limit double extensions Double extensions can lead to search explosions, for specific positions. Currently, however, these double extensions are worth about 10Elo and cannot be removed. This patch instead limits the number of double extensions given to a maximum of 3. This fixes https://github.com/official-stockfish/Stockfish/issues/3532 where the following testcase was shown to be problematic: ``` uci setoption name Hash value 4 setoption name Contempt value 0 ucinewgame position fen 8/Pk6/8/1p6/8/P1K5/8/6B1 w - - 37 130 go depth 20 ``` passed STC: https://tests.stockfishchess.org/tests/view/60c13161457376eb8bcaaa0f LLR: 2.95 (-2.94,2.94) <-2.50,0.50> Total: 73256 W: 6114 L: 6062 D: 61080 Elo +0.25 Ptnml(0-2): 222, 4912, 26306, 4968, 220 passed LTC: https://tests.stockfishchess.org/tests/view/60c196fb457376eb8bcaaa6b LLR: 2.94 (-2.94,2.94) <-2.50,0.50> Total: 166440 W: 5559 L: 5594 D: 155287 Elo -0.07 Ptnml(0-2): 106, 4921, 73197, 4894, 102 closes https://github.com/official-stockfish/Stockfish/pull/3544 Bench: 5067605 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: bmc4
Date: Tue Jun 8 20:16:20 2021 +0200 Timestamp: 1623176180 Simplify promotion move generator This patch removes Knight promotion checks from Captures. As a consequence, it also removes this underpromotion from qsearch. STC: LLR: 2.93 (-2.94,2.94) <-2.50,0.50> Total: 37776 W: 3113 L: 3023 D: 31640 Elo +0.83 Ptnml(0-2): 103, 2419, 13755, 2507, 104 https://tests.stockfishchess.org/tests/view/60be6a06457376eb8bcaa775 LTC: LLR: 2.93 (-2.94,2.94) <-2.50,0.50> Total: 39760 W: 1257 L: 1203 D: 37300 Elo +0.47 Ptnml(0-2): 11, 1079, 17646, 1133, 11 https://tests.stockfishchess.org/tests/view/60beb972457376eb8bcaa7c5 closes https://github.com/official-stockfish/Stockfish/pull/3536 Bench: 5530620 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: bmc4
Date: Sun Jun 6 21:22:39 2021 +0200 Timestamp: 1623007359 Reduce in LMR reduction on PvNode reduce reduction in LMR by 1 on PvNode. STC: LLR: 2.93 (-2.94,2.94) <-0.50,2.50> Total: 266080 W: 22438 L: 21996 D: 221646 Elo +0.58 Ptnml(0-2): 774, 17874, 95376, 18168, 848 https://tests.stockfishchess.org/tests/view/60bc0661457376eb8bcaa4bb LTC: LLR: 2.93 (-2.94,2.94) <0.50,3.50> Total: 20144 W: 698 L: 587 D: 18859 Elo +1.91 Ptnml(0-2): 2, 529, 8906, 626, 9 https://tests.stockfishchess.org/tests/view/60bcc3f2457376eb8bcaa58d closes https://github.com/official-stockfish/Stockfish/pull/3534 bench: 5173012 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Guy Vreuls
Date: Sat Jun 5 11:38:28 2021 +0200 Timestamp: 1622885908 Makefile: Extend sanitize support Enable compiling with multiple sanitizers at once. Syntax: make build ARCH=x86-64-avx512 debug=on sanitize="address undefined" closes https://github.com/official-stockfish/Stockfish/pull/3524 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 Windows 32 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 Jun 5 10:55:57 2021 +0200 Timestamp: 1622883357 Enhance CI to error on leaks Add flags to valgrind in our Continuous Integration scripts, to error on memory leaks. closes https://github.com/official-stockfish/Stockfish/pull/3525 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Guy Vreuls
Date: Sat Jun 5 10:47:46 2021 +0200 Timestamp: 1622882866 Revert "Simplify En Passant" This reverts commit 9f8058bd26df1c3ca37b85f811026f1eb82e6524. Fixes the memory leak discussed in pull request #3523 https://github.com/official-stockfish/Stockfish/pull/3523 Passed non-regression STC: LLR: 2.95 (-2.94,2.94) <-2.50,0.50> Total: 76184 W: 6330 L: 6282 D: 63572 Elo +0.22 Ptnml(0-2): 202, 5047, 27564, 5059, 220 https://tests.stockfishchess.org/tests/view/60ba146c457376eb8bcaa2e2 closes https://github.com/official-stockfish/Stockfish/pull/3527 Benched to verify there is no functional change. Bench: 4364128 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Fri Jun 4 14:07:46 2021 +0200 Timestamp: 1622808466 Clean SIMD code a bit Cleaner vector code structure in feature transformer. This patch just regroups the parts of the inner loop for each SIMD instruction set. Tested for non-regression: LLR: 2.96 (-2.94,2.94) <-2.50,0.50> Total: 115760 W: 9835 L: 9831 D: 96094 Elo +0.01 Ptnml(0-2): 326, 7776, 41715, 7694, 369 https://tests.stockfishchess.org/tests/view/60b96b39457376eb8bcaa26e It would be nice if a future patch could use some of the macros at the top of the file to unify the code between the distincts SIMD instruction sets (of course, unifying the Relu will be the challenge). closes https://github.com/official-stockfish/Stockfish/pull/3506 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 Windows 32 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: Fri Jun 4 01:32:11 2021 +0200 Timestamp: 1622763131 Makefile: better "make clean" for Windows Make clean should be really clean on Windows. Fixes issue https://github.com/official-stockfish/Stockfish/issues/3291 Closes https://github.com/official-stockfish/Stockfish/pull/3517 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: bmc4
Date: Fri Jun 4 01:23:49 2021 +0200 Timestamp: 1622762629 Introducing NodeType Root We transform rootNode into constexpr by adding a new NodeType `Root`, which causes a speed up. Local test: ``` Build Tester: 1.4.7.0 Windows 10 (Version 10.0, Build 0, 64-bit Edition) Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz SafeMode: No Running In VM: No HyperThreading Enabled: Yes CPU Warmup: Yes Command Line: bench Tests per Build: 25 ANOVA: n/a Engine# (NPS) Speedup Sp Conf. 95% S.S. patch (920.179,4) ---> master (906.329,2) ---> 1,528% 20.336,5 Yes No ``` --------- STC: LLR: 2.94 (-2.94,2.94) <-0.50,2.50> Total: 98216 W: 8348 L: 8102 D: 81766 Elo +0.87 Ptnml(0-2): 295, 6357, 35549, 6621, 286 https://tests.stockfishchess.org/tests/view/60b797e2457376eb8bcaa0ab Yellow LTC: LLR: -2.95 (-2.94,2.94) <0.50,3.50> Total: 76936 W: 2651 L: 2626 D: 71659 Elo +0.11 Ptnml(0-2): 29, 2233, 33916, 2264, 26 https://tests.stockfishchess.org/tests/view/60b80d6d457376eb8bcaa145 closes https://github.com/official-stockfish/Stockfish/pull/3522 No functional change see source |