Chris White

I think a simple shear+mhd+refinement warning should suffice for now.

I have the same issue with tuning plasma beta in every simulation I run, so I definitely understand the situation. Fortunately, this particular problem converges very quickly with the workflow...

This will require some digging. That the two versions of Athena++ are different, and that both differ from Athena 4.2, is not surprising. In fact, it is by design. That...

Nothing should have changed, @felker

If vectorization is really causing these failures, even when `simdlen` is eliminated, I worry about the other `simd` calls in the relativistic Riemann solvers: `grep '\' src/hydro/rsolvers/**/*_rel*` They are all...

That somewhat helpful strategy I employed in [the GR radiation branch](https://github.com/PrincetonUniversity/athena/blob/49b7a92da56c8e27ba9a47fed51cea4f1c0737c2/src/task_list/time_integrator.cpp#L231-L397) was to reduce the depth of nested conditionals. Even more of this can be done. It also helps to...

I wouldn't use NR code even if it were public domain -- it's pretty terrible all around. Those are just convenient formula references for the quadratic formula (including the form...

Just to clarify the relativistic/nonrelativistic issue for anyone reading this thread: This task is about writing new Coordinates classes deep inside the code, modifying `src/coordinates/` in the process. Such coordinates...

Naming conventions aside, I updated the wiki with some description of how to add new coordinates.

A more complete list of code papers: - Athena++: [Stone et al. 2020](https://ui.adsabs.harvard.edu/abs/2023ApJS..266....7T/abstract), already included - 4th order: [Felker & Stone 2018](https://ui.adsabs.harvard.edu/abs/2018JCoPh.375.1365F/abstract), already included - Stationary GR: [White et al....