[DISCONTINUED - Does NOT work on current Grin chain!]

GGM - open-source Grin GPU miner

The miner is no longer being udpated to work with hard-forked PoW changes!

Thanks to all miners who supported our software. We can no longer provide competitive open-source Grin miner to the community.

We recommend grin-miner (open source, nvidia, linux) or lolminer (closed source, amd, windows/linux).

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Miner supports all AMD and NVIDIA 6GB+ cards for both Linux and Winows (MacOS untested). Up to 60% faster compared to GGM2.

GGM releases collect 1% fee for the Grin Development Fund and 1% fee for further miner development.

How to build

Miner is written entirely in C# using new open-source .NET implementation called Dotnet Core.

Instal dotnet core 2.2 SDK (Linux/Windows/Mac) from https://dotnet.microsoft.com/download

Clone the repository and go to _build forder.

Run build_win.bat (Windows) or build_linux.sh (Linux). Alternatively, run build_[OS]_API.bat to build a miner with remote API support. API version can be used with our dashboard project to manage multiple rigs.

Run run_miner_win.bat or run_miner_linux.sh to start the miner.

If you wish to build CUDA .ptx intermediate code yourself, install CUDA SDK with compatible compiler and compile the project in Cudacka folder. Pre-generated PTX file is already included in the repository so there is no need to pre-compile it yourself.

How to run binary releases

Both Winows and Linux builds are self-contained and come with all needed dotnet core libraries, there is no need to install any additional SW.

Configuration

GPUs should be auto-detected on first launch. Once config.xml is created you can edit is to access hidden options:

Define log level

    <FileMinimumLogLevel>INFO</FileMinimumLogLevel>
    <ConsoleMinimumLogLevel>DEBUG</ConsoleMinimumLogLevel>

If you want to see all the details that are happening in the background, change the configration as above. Possible log level options are DEBUG, INFO, WARNING, ERROR.

Change CPU load

Locate this line in the config

  <CPUOffloadValue>
    0
  </CPUOffloadValue>

If you wish to reduce CPU load use small numbers (1..10), if you have a powerful multi-core CPU then you can try higher values like 50..100. Value 0 mean auto-balancer. Automatic setting may not work optimally with either very weak CPUs and/or many fast GPUs on the PC (8 and more Vegas for example).