Firedrake meeting 2024 01 24

Date and time 2024-01-24 1600 GMT (1600 UTC)

Action Items

1. Pick Chair and Minuter (KS to minute)
2. ALL: (ongoing) triage the open issues and confirm if they are indeed still open (and perhaps provide labels)
3. JB: Move pyop3 and FInAT to firedrakeproject
4. ALL: do things with SV's branches
5. DH: Email to Andreas to have 2 (+ others!!!) loopy PRs merged TODO: FIND OUT WHICH PRS THESE ARE
6. DH: Get Firedrake a docker open source account (link here)
7. DH: Talk to GregVernon about PR#2116.
8. DH: Revisit PR#2484.
9. DH: Order more Firedrake stickers
10. ALL/ANY: Drop libsupermesh (minutes)? JB: Waiting for https://github.com/Toblerity/rtree/pull/292
11. NB: Update on what is needed for Interp/ExternalOperator to be merged
12. ALL: Submit abstract for PDESoft PDESoft)

Agenda

Present:

Apologies:

JB: Spatialindex include headers are in Rtree 1.2.0

On PyPI https://pypi.org/project/Rtree/ merging https://github.com/firedrakeproject/firedrake/pull/3138 and associated supermesh PR should be fairly uncontroversial, as well as archiving our fork of libspatialindex.

UZ: Mesh Hierarchy support when working with Netgen mesh 2D

The PR 3314 only covers 2D for serial and parallel implementation. The 3D case requires a bit of work on the Netgen side, which needs to land in Netgen main, so is far in the timeline. I think the 3D implementation deserves a separate PR.

UZ: Netgen meshing documentation (following up on Connor comment in PR 3314)

Since Patrick has been preparing a course on how to solve PDE using Firedrake with a specific class on Netgen, we have a lot of new or improved material for documentation and demos. What is the appropriate way to include the new material in the Firedrake manual, more demos? Or a specific section on Netgen as mesher ? If the section is the best way to go, what should be the content? Some ideas: Constructive Solid Geometry via OCC, Linear Netgen mesh and parameters for splits (we can now do Powell-Sabin and Alfeld), Anisotropic mesh refinement, Adaptive mesh refinement (many improvements thanks to Patrick), High-order mesh in Netgen (curved Alfeld and Powell-Sabin splits), Netgen multi-grid hierarchies.

Merge PRs

Note that PRs put in this section should either be trivial or already have been reviewed. Discussion-worthy PRs should be separate agenda items.

• JB: 3324 Requested changes have been made There are more changes from the minutes not logged on the PR that haven't been made...

• PB: pyop2 #708

• DD: Fix constant dimension #3344

Date of next meeting

1600 GMT (1600 UTC) 2024-01-31