thodg/cgminer/NEWS

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• Hash : 262b98ca
  Author :
  Date : 2011-06-09T11:45:06
  

  Linux + x86_64 optimisations. Add likely() macro. Optimise a few obvious code paths with likely/unlikely. Change algo to sse2_amd64 by default. Move priority change to worker threads only. Detect number of CPUs and set default number of threads == CPUs. Add scheduling policy change to worker threads to SCHED_IDLE first and fallback to SCHED_BATCH on linux. Don't error when failing to set priority. Add CPU affinity and bind worker threads to CPUs when number of threads is a multiple of number of CPUs. Update NEWS with changes.

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• NEWS

• - Linux x86_64 optimisations - Con Kolivas
  - Optimise for x86_64 by default by using sse2_64 algo
  - Detects CPUs and sets number of threads accordingly
  - Uses CPU affinity for each thread where appropriate
  - Sets scheduling policy to lowest possible
  - Minor performance tweaks
  
  Version 1.0.1 - May 14, 2011
  
  - OSX support
  
  Version 1.0 - May 9, 2011
  
  - jansson 2.0 compatibility
  - correct off-by-one in date (month) display output
  - fix platform detection
  - improve yasm configure bits
  - support full URL, in X-Long-Polling header
  
  Version 0.8.1 - March 22, 2011
  
  - Make --user, --pass actually work
  
  - Add User-Agent HTTP header to requests, so that server operators may
    more easily identify the miner client.
  
  - Fix minor bug in example JSON config file
  
  Version 0.8 - March 21, 2011
  
  - Support long polling: http://deepbit.net/longpolling.php
  
  - Adjust max workload based on scantime (default 5 seconds,
    or 60 seconds for longpoll)
  
  - Standardize program output, and support syslog on Unix platforms
  
  - Suport --user/--pass options (and "user" and "pass" in config file),
    as an alternative to the current --userpass
  
  Version 0.7.2 - March 14, 2011
  
  - Add port of ufasoft's sse2 assembly implementation (Linux only)
    This is a substantial speed improvement on Intel CPUs.
  
  - Move all JSON-RPC I/O to separate thread.  This reduces the
    number of HTTP connections from one-per-thread to one, reducing resource
    usage on upstream bitcoind / pool server.
  
  Version 0.7.1 - March 2, 2011
  
  - Add support for JSON-format configuration file.  See example
    file example-cfg.json.  Any long argument on the command line
    may be stored in the config file.
  - Timestamp each solution found
  - Improve sha256_4way performance.  NOTE: This optimization makes
    the 'hash' debug-print output for sha256_way incorrect.
  - Use __builtin_expect() intrinsic as compiler micro-optimization
  - Build on Intel compiler
  - HTTP library now follows HTTP redirects
  
  Version 0.7 - February 12, 2011
  
  - Re-use CURL object, thereby reuseing DNS cache and HTTP connections
  - Use bswap_32, if compiler intrinsic is not available
  - Disable full target validation (as opposed to simply H==0) for now
  
  Version 0.6.1 - February 4, 2011
  
  - Fully validate "hash < target", rather than simply stopping our scan
    if the high 32 bits are 00000000.
  - Add --retry-pause, to set length of pause time between failure retries
  - Display proof-of-work hash and target, if -D (debug mode) enabled
  - Fix max-nonce auto-adjustment to actually work.  This means if your
    scan takes longer than 5 seconds (--scantime), the miner will slowly
    reduce the number of hashes you work on, before fetching a new work unit.
  
  Version 0.6 - January 29, 2011
  
  - Fetch new work unit, if scanhash takes longer than 5 seconds (--scantime)
  - BeeCee1's sha256 4way optimizations
  - lfm's byte swap optimization (improves via, cryptopp)
  - Fix non-working short options -q, -r
  
  Version 0.5 - December 28, 2010
  
  - Exit program, when all threads have exited
  - Improve JSON-RPC failure diagnostics and resilience
  - Add --quiet option, to disable hashmeter output.
  
  Version 0.3.3 - December 27, 2010
  
  - Critical fix for sha256_cryptopp 'cryptopp_asm' algo
  
  Version 0.3.2 - December 23, 2010
  
  - Critical fix for sha256_via
  
  Version 0.3.1 - December 19, 2010
  
  - Critical fix for sha256_via
  - Retry JSON-RPC failures (see --retry, under "minerd --help" output)
  
  Version 0.3 - December 18, 2010
  
  - Add crypto++ 32bit assembly implementation
  - show version upon 'minerd --help'
  - work around gcc 4.5.x bug that killed 4way performance
  
  Version 0.2.2 - December 6, 2010
  
  - VIA padlock implementation works now
  - Minor build and runtime fixes
  
  Version 0.2.1 - November 29, 2010
  
  - avoid buffer overflow when submitting solutions
  - add Crypto++ sha256 implementation (C only, ASM elided for now)
  - minor internal optimizations and cleanups
  
  Version 0.2 - November 27, 2010
  
  - Add script for building a Windows installer
  - improve hash performance (hashmeter) statistics
  - add tcatm 4way sha256 implementation
  - Add experimental VIA Padlock sha256 implementation
  
  Version 0.1.2 - November 26, 2010
  
  - many small cleanups and micro-optimizations
  - build win32 exe using mingw
  - RPC URL, username/password become command line arguments
  - remove unused OpenSSL dependency
  
  Version 0.1.1 - November 24, 2010
  
  - Do not build sha256_generic module separately from cpuminer.
  
  Version 0.1 - November 24, 2010
  
  - Initial release.
  
  

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