The ethminer is an Ethereum GPU mining worker. It origins in cpp-ethereum project (where GPU mining has been discontinued). Then hugely improved in Genoil's fork.
- Nvidia CUDA mining
- realistic benchmarking against arbitrary epoch/DAG/blocknumber
- on-GPU DAG generation (no more DAG files on disk)
- stratum mining without proxy
- OpenCL devices picking
- farm failover (getwork + stratum)
Chat in ethminer channel on Gitter.
ethminer is a command line program. This means you launch it either from a Windows command prompt or Linux console, or create shortcuts to predefined command lines using a Linux Bash script or Windows batch/cmd file. For a full list of available command, please run
ethminer --help
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Why is my hashrate with Nvidia cards on Windows 10 so low?
The new WDDM 2.x driver on Windows 10 uses a different way of addressing the GPU. This is good for a lot of things, but not for ETH mining. For Kepler GPUs: I actually don't know. Please let me know what works best for good old Kepler. For Maxwell 1 GPUs: Unfortunately the issue is a bit more serious on the GTX750Ti, already causing suboptimal performance on Win7 and Linux. Apparently about 4MH/s can still be reached on Linux, which, depending on ETH price, could still be profitable, considering the relatively low power draw. For Maxwell 2 GPUs: There is a way of mining ETH at Win7/8/Linux speeds on Win10, by downgrading the GPU driver to a Win7 one (350.12 recommended) and using a build that was created using CUDA 6.5. For Pascal GPUs: You have to use the latest WDDM 2.1 compatible drivers in combination with Windows 10 Anniversary edition in order to get the full potential of your Pascal GPU.
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Why is a GTX1080 slower than a GTX1070?
Because of the GDDR5X memory, which can't be fully utilized for ETH mining (yet).
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Are AMD cards also affected by slowdowns with increasing DAG size?
Only GCN 1.0 GPUs (78x0, 79x0, 270, 280), but in a different way. You'll see that on each new epoch (30K blocks), the hashrate will go down a little bit.
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Can I still mine ETH with my 2GB GPU?
No.
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What are the optimal launch parameters?
The default parameters are fine in most scenario's (CUDA). For OpenCL it varies a bit more. Just play around with the numbers and use powers of 2. GPU's like powers of 2.
This project uses CMake and Hunter package manager.
mkdir build; cd build
cmake ..
cmake --build .-DETHASHCL=ON- enable OpenCL mining,ONby default,-DETHASHCUDA=ON- enable CUDA mining,OFFby default,-DETHSTRATUM=ON- build with Stratum protocol support,ONby default.