Add ROCm article

[jacobgkau]

This adds an article about installing ROCm (to enable HIP and OpenCL). This is AMD's equivalent of installing CUDA.

In the past, this was a messy process that required running an installation script and (depending on the use case) installing DKMS modules, which didn't always work well with the Pop!_OS kernel. However, at this point, AMD has an Ubuntu repository with a ROCm package that works together with the AMDGPU driver built into the kernel.

There may be some proprietary applications that aren't compatible with this form of ROCm yet, but this is the smoothest experience we can currently offer AMD users for enabling GPU compute, and it works with at least some known applications such as Blender and PyTorch. I think it makes sense to publicly document this as being a supported method of installation, since it doesn't interfere with our supported kernel, etc.

Closes #1220.

It would be good if someone else from @system76/quality-assurance can test this on a desktop with an AMD GPU. I tested it on the pang12 with its APU.

[leviport]

Tested on my custom build with 6900xt, and everything seems good!

[pablovesnine]

Working perfectly with a 7900 GRE, suggested a small change. Good job!

[jacobgkau]

Another user confirmed the article's working as written in pop-os/pop#3235.

[pablovesnine]

Would it be possible to change the repository to point to the "latest" release instead of version 6.1?

http://repo.radeon.com/rocm/apt/latest/

I'm not sure if using the "latest" release will break anything. I can try it, but first I would like to know the reasoning behind pointing specifically to the 6.1 release.

[jacobgkau]

first I would like to know the reasoning behind pointing specifically to the 6.1 release.

As stated in the article, the instructions were based on AMD's own instructions for Ubuntu: https://rocm.docs.amd.com/projects/install-on-linux/en/latest/how-to/native-install/ubuntu.html

Please do let us know what you find if you try using "latest" instead.

[pablovesnine]

first I would like to know the reasoning behind pointing specifically to the 6.1 release.

As stated in the article, the instructions were based on AMD's own instructions for Ubuntu: https://rocm.docs.amd.com/projects/install-on-linux/en/latest/how-to/native-install/ubuntu.html

Please do let us know what you find if you try using "latest" instead.

Fair enough, thank you for your work!

I tried modifying the version to "latest" (which is, in fact, 6.1.1) and had no problems:

https://repo.radeon.com/rocm/apt/latest jammy main

I'm not sure if pointing to the latest release will cause issues down the road, but for the time being, it's working just fine.