Documentation fixes

[joaander]

Description

• Recommend installing CUDA 12.0 builds from conda-forge.
• Fix typo in net_virial documentation.

Motivation and context

• CUDA 12 builds are now available on conda-forge thanks to the efforts of @bdice. The installation documentation should recommend installing the latest version available.
• The net_virial documentation incorrectly identified the shape of the array.

Change log

Fixed:

* Improved documentation.

Checklist:

• I have reviewed the Contributor Guidelines.
• I agree with the terms of the HOOMD-blue Contributor Agreement.
• My name is on the list of contributors (sphinx-doc/credits.rst) in the pull request source branch.

[bdice]

Looks good.

Also, users can control which CUDA Toolkit version they get by installing
hoomd=4.0.1=*gpu* cuda-version=12.*
or
hoomd=4.0.1=*gpu* cuda-version=11.*
or more specifically cuda-version=11.5, etc. (Not tested but this should work, let me know if not.) The CONDA_OVERRIDE_CUDA environment variable will override the __cuda virtual package constraint. You could satisfy cudatoolkit cuda-version=11.8 with a CUDA 12 driver that shows in __cuda. In other words, it’s fine to install CUDA 11 environments on CUDA 12 drivers if needed.

[joaander]

@bdice Yes, requesting "hoomd=4.0.1=*gpu*" "cuda-version=12.*" and "hoomd=4.0.1=*gpu*" "cuda-version=12.*" works as you describe. CONDA_OVERRIDE_CUDA is necessary for many HOOMD-blue users that install on cluster login nodes that lack GPUs with the intention to use it on GPU compute nodes.

You are correct to note the forward compatibility with newer drivers. I think that distinction is too much information to include in installation documentation aimed at first time users.

[bdice]

Awesome. I agree that might be too much for the HOOMD docs, just wanted to be sure you were aware of that option. Thanks again!

[vyasr]

This got merged real quick so I didn't review, but it looks good! Excited to see uptake of our new conda-forge packages.