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https://github.com/GOSTSec/sgminer
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This allows each local thread id to have one slot to put any positive results into, thus making overlapping results far less likely. Thus races will be much rarer, allowing more threads. It should also pick up blocks close to each other more reliably and hopefully decrease the number of rejects and opencl errors. Do the search over the buffer entirely in a separate thread to allow the GPU to stay as busy as possible. Detach threads from themselves to prevent unlucky even where dereferencing occurs by freeing the data that stores the thread info.
This is a multi-threaded CPU miner for bitcoin. License: GPLv2. See COPYING for details. Dependencies: libcurl http://curl.haxx.se/libcurl/ jansson http://www.digip.org/jansson/ (jansson is optional, and is included in-tree) Basic *nix build instructions: ./autogen.sh # only needed if building from git repo CFLAGS="-O3 -Wall -msse2" ./configure make Basic WIN32 build instructions (on Fedora 13; requires mingw32): ./autogen.sh # only needed if building from git repo rm -f mingw32-config.cache MINGW32_CFLAGS="-O3 -Wall -msse2" mingw32-configure make ./mknsis.sh Usage instructions: Run "minerd --help" to see options. Also many issues and FAQs are covered in the forum thread dedicated to this program, http://www.bitcoin.org/smf/index.php?topic=1925.0;all