New version Monero cryptonight V8 #107
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Added to compare results with ccminer tool (cuda variant) Signed-off-by: Tanguy Pruvot <[email protected]>
should be set to 14 for NEOS-blake and pentablake
also ensure blake context was initialised...
based on https://github.com/ghostlander/cpuminer-neoscrypt with reduced changes in cpu-miner.c Signed-off-by: Tanguy Pruvot <[email protected]>
Fix some existing bugs : cryptonight hashrate log and lock when missing stratum diff colors: enable colored output by default and also trap signals on windows (Ctrl+C) Current state: much slower than linux (and x64 almost twice the x86 speed) Signed-off-by: Tanguy Pruvot <[email protected]>
tested ok with curl-7.38.0 openssl 1.0.1j
was really not easy to setup, ssl config:
CROSS_COMPILE="x86_64-w64-mingw32-" ./Configure mingw64 no-asm no-shared
make && make install
curl config:
extraopts=--enable-ipv6
extraflags="-DOPENSSL_NO_ASM -D_THREAD_SAFE"
openssl=/usr/local/ssl
CROSS_COMPILE="x86_64-w64-mingw32-" ./configure --enable-shared=no \
--disable-manual --without-libssh2 --disable-rtsp --disable-ldap \
--disable-dict --disable-pop3 --disable-ftp --disable-telnet --disable-tftp \
--disable-smtp --disable-imap --disable-ldaps --disable-gopher --with-zlib \
--with-ssl=$openssl --with-libssl-prefix=$openssl CPPFLAGS="$extraflags" ${extraopts}
Signed-off-by: Tanguy Pruvot
fix also some remaining aligned attributes for VC++ TODO: support ASM linkage in VC2013 (USE_ASM define)
and update icon branch in README
add also a linux build scrypt
also reduce x11 intensity to output a bit more while benchmarking
and fix qubit difficulty
Signed-off-by: Tanguy Pruvot <[email protected]>
ARM boards don't build when enabling ASM, and some of them benefit from using -march=native. Let's have a dedicated build file for this. Also it takes care of cleaning old autoconf/automake remains that can make the build fail after pulling updates.
it's only needed on platforms who don't have a CRC32 instruction.
it is counter productive to avoid writing 50% of the times, it adds conditional jumps which are mispredicted half of the times. Better use conditional moves and always write. This increase performance by 6% on ARMv8.
By moving some fields in the structure, we can increase the performance by an extra 6% on Cortex-A53 at least.
Drop all hashes which will have one of their highest 16 bits set since they will not match. This saves 4 calls to rf256_one_round() via rf256_final() and almost doubles the performance.
It's really expensive to use memcpy() to copy 16 kB of data on some small processors like ARM Cortex A53 which only have 64-bit data paths from the L1 cache. This roughly consumes 2k cycles just for the copy. "Perf top" shows that half of the time is spent in memcpy(), and given that this exhausts the L1 cache, the rest of the operations must cause a lot of thrashing. Since there are few modifications applied to the rambox between two consecutive calls, better keep a history of recent changes inside the context itself. This doesn't cost much because the write bus between the CPU and the L1 cache is 128 bit on A53 so we can afford a few writes. Also, the typical amount of updates apparently is between 16 and 32 so it makes sense to put an upper bound on 32 and remain the memory footprint low.. The performance is roughly multiplied by 5 on A53 just by doing this, the hash rate reaches about 14.4k/s on NanoPI-Neo4, or almost 10 times the performance of the original code.
and fix modifier for arm64
properly...
Based on JayDDee/cpuminer-opt@3c5e892 Co-authored-by: Jay D Dee <[email protected]>
Those are slight variations of the yescrypt algorithm, used notably by bitzeny (yescryptr8), yenten (yescryptr16), and wavi (yescryptr32).
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Can you add new version of cryptonight V8 for Monero?
Thanks.