Basic help runtime details from https://github.com/ethereum-mining/ethminer
Example to mine with Nvida CUDA enabled: ethminer.exe -RH -U
Usage ethminer [OPTIONS]
Work farming mode:
-FF,-FO, --farm-failover, --stratum-failover
0: official stratum spec: ethpool, ethermine, coinotron, mph, nanopool (default)
1: eth-proxy compatible: dwarfpool, f2pool, nanopool (required for hashrate reporting to work with nanopool)
2: EthereumStratum/1.0.0: nicehash
-RH, --report-hashrate Report current hashrate to pool (please only enable on pools supporting this)
-HWMON Displays gpu temp and fan percent.
Email address used in eth-proxy (optional)
-G,--opencl When mining use the GPU via OpenCL.
-U,--cuda When mining use the GPU via CUDA.
-X,--cuda-opencl Use OpenCL + CUDA in a system with mixed AMD/Nvidia cards. May require setting --opencl-platform 1
--opencl-devices <0 1 ..n> Select which OpenCL devices to mine on. Default is to use all
--list-devices List the detected OpenCL/CUDA devices and exit. Should be combined with -G or -U flag
parallel - load DAG on all GPUs at the same time (default)
sequential - load DAG on GPUs one after another. Use this when the miner crashes during DAG generation
--cl-local-work Set the OpenCL local work size. Default is 128
--cl-global-work Set the OpenCL global work size as a multiple of the local work size. Default is 8192 * 128
--cl-parallel-hash <1 2 ..8> Define how many threads to associate per hash. Default=8
--cuda-block-size Set the CUDA block work size. Default is 128
--cuda-grid-size Set the CUDA grid size. Default is 8192
--cuda-streams Set the number of CUDA streams. Default is 2
auto - Uses a heuristic based on the number of active CUDA contexts in the process C and the number of logical processors in the system P. If C > P, then yield else spin.
spin - Instruct CUDA to actively spin when waiting for results from the device.
yield - Instruct CUDA to yield its thread when waiting for results from the device.
sync - Instruct CUDA to block the CPU thread on a synchronization primitive when waiting for the results from the device.
--cuda-devices <0 1 ..n> Select which CUDA GPUs to mine on. Default is to use all
--cuda-parallel-hash <1 2 ..8> Define how many hashes to calculate in a kernel, can be scaled to achieve better performance. Default=4
--api-port Set the api port, the miner should listen to. Use 0 to disable. Default=0, use negative numbers to run in readonly mode. for example -3333.
-v,--verbosity <0 - 9> Set the log verbosity from 0 to 9 (default: 8).
-V,--version Show the version and exit.
-h,--help Show this help message and exit.