GPU Exception on Colab about distributed-computing-scripts

[tdulcet]

Yeah, it is not an issue with GpuOwl, but with OpenCL on Colab, which unfortunately is currently broken. See #18 for more information.

In the meantime, I would suggest temporally using the previous version of our GPU notebook, which uses CUDALucas. See the note I recently added near the top of our Colab README:

Distributed-Computing-Scripts/google-colab/README.md

Line 10 in eac3911

The “GPU and CPU” notebook does not currently work, as [OpenCL is broken on Colab](https://github.com/googlecolab/colabtools/issues/3592) and GpuOwl uses OpenCL. Users can temporarily switch back to the [previous version of the notebook](https://github.com/tdulcet/Distributed-Computing-Scripts/blob/933d9916a8bc841c3313d77a010d73e95e9dee65/google-colab/GoogleColabGPU.ipynb), which ran CUDALucas. CUDALucas is slower than GpuOwl, but it uses CUDA, which still works on Colab.

I am glad to hear that our CPU notebook is working for you.

\CC @Danc2050

[BenjaminMichaelis]

Yeah, it is not an issue with GpuOwl, but with OpenCL on Colab, which unfortunately is currently broken. See #18 for more information.

In the meantime, I would suggest temporally using the previous version of our GPU notebook, which uses CUDALucas. See the note I recently added near the top of our Colab README:

Distributed-Computing-Scripts/google-colab/README.md

Line 10 in eac3911

The “GPU and CPU” notebook does not currently work, as [OpenCL is broken on Colab](https://github.com/googlecolab/colabtools/issues/3592) and GpuOwl uses OpenCL. Users can temporarily switch back to the [previous version of the notebook](https://github.com/tdulcet/Distributed-Computing-Scripts/blob/933d9916a8bc841c3313d77a010d73e95e9dee65/google-colab/GoogleColabGPU.ipynb), which ran CUDALucas. CUDALucas is slower than GpuOwl, but it uses CUDA, which still works on Colab.

I am glad to hear that our CPU notebook is working for you.

\CC @Danc2050

Ah thank you! This explains it, I must of missed that issue.

I can close the issue now unless you want me to keep it open for visibility

[tdulcet]

No problem. I will fix the syntax of that note in my next commit, so that it shows up more prominently on the Colab README.

Hopefully Nvidia and/or Colab will fix this OpenCL issue soon...