BFGMiner

A modular ASIC, FPGA, GPU and CPU miner written in C, cross platform for Linux, Mac, and Windows including support for OpenWrt-capable routers.

Features

• A variety of device drivers for Bitcoin (SHA256d):
  • Butterfly Labs's BitForce SC (ASIC) product line
  • Avalon ASIC mining rig
  • Butterfly Labs's FPGA BitForce Singles and MiniRigs
  • Enterpoint's Cairnsmore1 FPGA mining board
  • FPGA Mining X6500
  • Qi Hardware's Icarus and Lancelot FPGA mining boards
  • BTCFPGA's ModMiner Quad FPGA-based mining device
  • Ztex's FPGA boards
  • OpenCL GPUs, such as AMD Radeons
    • Kernels (including BFI_INT patching): Diablo, DiaKGCN, Phatk and poclbm
    • VECTOR support
    • Dynamic intensity that keeps desktop interactive under load and maximises throughput when desktop idle
    • Integrated overclocking and fan control (including automatic adjustment, if configured)
    • ADL device reordering by PCI bus ID
    • GCN (79x0) support
  • CPU (not enabled by default nor included in Windows build)
  • Coming soon:
    • ASICMINER ASICs
    • any other device provided for development
• Support for new getblocktemplate decentralized mining protocol
• Scrypt mining support for both CPU and OpenCL (GPU)
• Very low overhead free C code for Linux and Windows with very low CPU usage
• Long poll support - will use longpoll from any pool if primary pool does not support it
• epoll support for interrupting FPGA waiting when new work is available without timeout-looping
• Self detection of new blocks with a mini-database for slow/failing longpoll scenarios, maximum work efficiency and minimum rejects
• Heavily threaded code hands out work retrieval and work submission to separate threads to not hinder devices working
• Caching of submissions during transient network outages
• Preemptive fetching of work prior to completion of current work
• Local generation of more valid work (rollntime) whenever possible, as supported on a per-work item basis
• Prevention of stale work submission on new block (submitold also supported)
• Automatically detects failing pools and disables them
• Multi-device support (all or discrete selection)
• Summarised and discrete device data statistics of requests, accepts, rejects, hw errors, efficiency and utility
• Watchdog thread to restart idle threads but not crash machine if they don't respond
• Summary displayed when quitting
• Supports multiple pools with multiple intelligent failover mechanisms
• On the fly menu based management of most settings
• Trickling of extra work to backup pools if primary pool is responding but slow
• On the fly enabling/disable/restarting of devices
• Device temperature monitoring (for devices that support it)
• Reuses persistent connections when possible
• RPC +/- JSON interface for remote control
• Ability to cope with slow routers
• X-Reject-Reason support
• Lots of other stuff I can't remember. See options.

See Also

• Pooled mining
• Why a GPU mines faster than a CPU

External Links

• bfgminer project page on GitHub
• Binaries and Source - All Versions
• BitcoinTalk forum thread
• bfgminer compiled for Mac OS X
• Bitcoin Mining Software