Latest abrok Development Versions August 10th (SF The gift that keeps on giving )

!! latest version !! 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: Unai Corzo Date: Mon Aug 10 19:17:57 2020 +0200 Timestamp: 1597079877 Assorted search parameter tune STC https://tests.stockfishchess.org/tests/view/5f31219090816720665374ec LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 3376 W: 487 L: 359 D: 2530 Elo +13.18 Ptnml(0-2): 17, 253, 1042, 337, 39 LTC https://tests.stockfishchess.org/tests/view/5f3127f79081672066537502 LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 8360 W: 581 L: 475 D: 7304 Elo +4.41 Ptnml(0-2): 11, 407, 3238, 513, 11 closes https://github.com/official-stockfish/Stockfish/pull/2971 bench: 4733874 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: Fanael Linithien Date: Mon Aug 10 19:17:57 2020 +0200 Timestamp: 1597079877 Provide vectorized NNUE code for SSE2 and MMX targets This patch allows old x86 CPUs, from AMD K8 (which the x86-64 baseline targets) all the way down to the Pentium MMX, to benefit from NNUE with comparable performance hit versus hand-written eval as on more modern processors. NPS of the bench with NNUE enabled on a Pentium III 1.13 GHz (using the MMX code): master: 38951 this patch: 80586 NPS of the bench with NNUE enabled using baseline x86-64 arch, which is how linux distros are likely to package stockfish, on a modern CPU (using the SSE2 code): master: 882584 this patch: 1203945 closes https://github.com/official-stockfish/Stockfish/pull/2956 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: mstembera Date: Mon Aug 10 14:38:17 2020 +0200 Timestamp: 1597063097 Cleanup and optimize SSE/AVX code AVX512 +4% faster AVX2 +1% faster SSSE3 +5% faster passed non-regression STC: STC https://tests.stockfishchess.org/tests/view/5f31249f90816720665374f6 LLR: 2.96 (-2.94,2.94) {-1.50,0.50} Total: 17576 W: 2344 L: 2245 D: 12987 Elo +1.96 Ptnml(0-2): 127, 1570, 5292, 1675, 124 closes https://github.com/official-stockfish/Stockfish/pull/2962 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: sf-x Date: Mon Aug 10 14:32:11 2020 +0200 Timestamp: 1597062731 Makefile rework/cleanup Makefile targets x86-64-sse42, x86-sse3 are removed; x86-64-sse41 is renamed to x86-64-sse41-popcnt (it did enable popcnt). Makefile variables sse3, sse42, their associated compilation flags and code in misc.cpp are removed. closes https://github.com/official-stockfish/Stockfish/pull/2922 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: Mon Aug 10 11:14:46 2020 +0200 Timestamp: 1597050886 Modify castling extension Extend castling only if there are few friendly pieces on the castling side. Inspired by silversolver1's (Rahul Dsilva) test https://tests.stockfishchess.org/tests/view/5f0fef560640035f9d2978cf STC: LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 7096 W: 947 L: 818 D: 5331 Elo +6.32 Ptnml(0-2): 32, 604, 2181, 665, 66 https://tests.stockfishchess.org/tests/view/5f309f729081672066537426 LTC: LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 4712 W: 300 L: 215 D: 4197 Elo +6.27 Ptnml(0-2): 2, 190, 1895, 259, 10 https://tests.stockfishchess.org/tests/view/5f30a2039081672066537430 closes https://github.com/official-stockfish/Stockfish/pull/2970 Bench: 4094850 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: mstembera Date: Mon Aug 10 11:12:35 2020 +0200 Timestamp: 1597050755 Workaround using unaligned loads for gcc < 9 despite usage of alignas, the generated (avx2/avx512) code with older compilers needs to use unaligned loads with older gcc (e.g. confirmed crash with gcc 7.3/mingw on abrok). Better performance thus requires gcc >= 9 on hardware supporting avx2/avx512 closes https://github.com/official-stockfish/Stockfish/pull/2969 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: jjoshua2 Date: Mon Aug 10 07:34:45 2020 +0200 Timestamp: 1597037685 simplying hybrid condition STC https://tests.stockfishchess.org/tests/view/5f3059d1908167206653736b: LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 12520 W: 766 L: 727 D: 11027 Elo +1.08 Ptnml(0-2): 13, 624, 4949, 659, 15 LTC: https://tests.stockfishchess.org/tests/view/5f30863a90816720665373d1 LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 12520 W: 766 L: 727 D: 11027 Elo +1.08 Ptnml(0-2): 13, 624, 4949, 659, 15 closes: https://github.com/official-stockfish/Stockfish/pull/2965 Bench: 4084753 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: Sergio Vieri Date: Mon Aug 10 07:29:40 2020 +0200 Timestamp: 1597037380 Update default net to nn-112bb1c8cdb5.nnue First trained net using search eval instead of pv leaf static eval. Net created at: 20200810-0744 passed STC: https://tests.stockfishchess.org/tests/view/5f30995d90816720665373f8 LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 15416 W: 2071 L: 1920 D: 11425 Elo +3.40 Ptnml(0-2): 123, 1376, 4563, 1519, 127 passed LTC: https://tests.stockfishchess.org/tests/view/5f30a104908167206653742b LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 29792 W: 2003 L: 1834 D: 25955 Elo +1.97 Ptnml(0-2): 50, 1541, 11550, 1700, 55 closes https://github.com/official-stockfish/Stockfish/pull/2966 Bench: 4084753 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: Mon Aug 10 07:28:19 2020 +0200 Timestamp: 1597037299 Revert "Avoid special casing for MinGW" This reverts commit a6e89293df5af35931b61d86b6de3872a981c100. The offending setup has been found as gcc/mingw 7.3 (on Ubuntu 18.04). fixes https://github.com/official-stockfish/Stockfish/issues/2963 closes https://github.com/official-stockfish/Stockfish/issues/2968 No functional change. see source

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