Matthew Knepley

> And we've discussed that > > 1. doing different setup with tet vs hex meshes is bad for comparison studies and > 2. this is **not** sufficient because we...

@jeremylt I do not understand the distinction between periodic cells and faces. Maybe I can make the interface easier if I understand.

Which test is failing? Is this in an MR?

@jrwrigh You are correct that the bounding box calculation was wrong for periodic things. I believe it is now fixed.

Dang, you are right. I fixed it in this unfortunate branch that is taking forever: https://gitlab.com/danofinn/petsc/-/commits/danfinn/feature-swarm-poisson-test

@baagaard-usgs Open and close happens on creation and destruction. The idea is that there is no state to preserve, with the exception of the filename.

I think the thing to do here in order to understand is to write out the equations for a two fault cell problem that we want this thing to obey....

@rwalkerlewis How is this doing?

This is fixed in the latest `knepley/pylith`

@baagaard-usgs I updated everything (branch in PETSc and PyLith) and now I get that error in DMPlexComputeJacobian_Action_Internal(), which I think has not been updated yet, ``` 0 TS dt 0.1...