NanoPoW is an implementation of the proof-of-work used by Nano. That supports CPU and GPU (currently only OpenCL).

func main() {
    nanopow.GenerateWork([]byte{/** PREVIOUS HASH **/}, nanopow.V1BaseDifficult)
}

By default, we always uses CPU. If GPU is available, it will use CPU and GPU, combined.

By default, we don't support GPU. You need to enable it using the "build tags", when build use:

go build -tags cl

Currently the only available option is OpenCL ("cl" tag).

I don't have an huge amount of data to compare and limited devices to test against. Some devices doesn't supports OpenCL. All times are using the V1 difficulty.

Currently we only support OpenCL, which is not natively supported by some devices. I have some plans to add some support for OpenGL, OpenGLES or Vulkan. Seems that Vulkan Compute, if possible, is the best solution since it's compatible with Windows, Linux and Android.

Currently only one GPU is supported, but it can be easily fixed, but I don't have a multi-GPU setup to be able to test. :(

Pull requests are welcome.

MIT