Edit
thodg/cgminer/NEWS
Con Kolivas
- NEWS
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- Iterating over 1026 nonces when confirming data from the GPU is old code and unnecessary and can lead to repeats/stales. - The poclbm kernel needs to be updated to work with the change to 4k sized output buffers. Version 1.2.7 - July 16, 2011 - Show last 8 characters of share submitted in log. - Display URL connected to and user logged in as in status. - Display current block and when it was started in the status line. - Only pthread_join the mining threads if they exist as determined by pthread_cancel and don't fail on pthread_cancel. - Create a unique work queue for all getworks instead of binding it to thread 0 to avoid any conflict over thread 0's queue. - Clean up the code to make it clear it's watchdog thread being messaged to restart the threads. - Check the current block description hasn't been blanked pending the real new current block data. - Re-enable signal handlers once the signal has been received to make it possible to kill cgminer if it fails to shut down. - Disable restarting of CPU mining threads pending further investigation. - Update longpoll messages. - Add new block data to status line. - Fix opencl tests for osx. - Only do local generation of work if the work item is not stale itself. - Check for stale work within the mining threads and grab new work if positive. - Test for idle network conditions and prevent threads from being restarted by the watchdog thread under those circumstances. - Make sure that local work generation does not continue indefinitely by stopping it after 10 minutes. - Tweak the kernel to have a shorter path using a 4k buffer and a mask on the nonce value instead of a compare and loop for a shorter code path. - Allow queue of zero and make that default again now that we can track how work is being queued versus staged. This can decrease reject rates. - Queue precisely the number of mining threads as longpoll_staged after a new block to not generate local work. Version 1.2.6 - July 15, 2011 - Put a current system status line beneath the total work status line - Fix a counting error that would prevent cgminer from correctly detecting situations where getwork was failing - this would cause stalls sometimes unrecoverably. - Limit the maximum number of requests that can be put into the queue which otherwise could get arbitrarily long during a network outage. - Only count getworks that are real queue requests. Version 1.2.5 - July 15, 2011 - Conflicting -n options corrected - Setting an intensity with -I disables dynamic intensity setting - Removed option to manually disable dynamic intensity - Improve display output - Implement signal handler and attempt to clean up properly on exit - Only restart threads that are not stuck waiting on mandatory getworks - Compatibility changes courtesy of Ycros to build on mingw32 and osx - Explicitly grab first work item to prevent false positive hardware errors due to working on uninitialised work structs - Add option for non curses --text-only output - Ensure we connect at least once successfully before continuing to retry to connect in case url/login parameters were wrong - Print an executive summary when cgminer is terminated - Make sure to refresh the status window Versions -> 1.2.4 - Con Kolivas - July 2011. New maintainership of code under cgminer name. - Massive rewrite to incorporate GPU mining. - Incorporate original oclminer c code. - Rewrite gpu mining code to efficient work loops. - Implement per-card detection and settings. - Implement vector code. - Implement bfi int patching. - Import poclbm and phatk ocl kernels and use according to hardware type. - Implement customised optimised versions of opencl kernels. - Implement binary kernel generation and loading. - Implement preemptive asynchronous threaded work gathering and pushing. - Implement variable length extra work queues. - Optimise workloads to be efficient miners instead of getting lots of extra work. - Implement total hash throughput counters, per-card accepted, rejected and hw error count. - Staging and watchdog threads to prevent fallover. - Stale and reject share guarding. - Autodetection of new blocks without longpoll. - Dynamic setting of intensity to maintain desktop interactivity. - Curses interface with generous statistics and information. - Local generation of work (xroll ntime) when detecting poor network connectivity. Version 1.0.2 - 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.