Firedrake meeting 2026 01 29

Date and time 2026-01-29 1600 UTC+1

Action Items

1. Pick Chair and Minuter (JHC to pick)
2. ALL: (ongoing) triage the open issues and confirm if they are indeed still open (and perhaps provide labels)
3. ALL: do things with SV's branches
4. DH: Email to Andreas to have 2 (+ others!!!) loopy PRs merged TODO: FIND OUT WHICH PRS THESE ARE
5. DH: Talk to GregVernon about PR#2116.
6. CW: More testing configurations (minutes)

Agenda

Present: DH, LC, CW, PB, AC, JHC, IM

Apologies:

Agenda items

PB: Multigrid for non-Lagrange PR #4839

Enabling prolong/restrict/inject for non-Lagrange elements in a very similar spirit to LC's PR #4804.

Accidentally opens the door to extending supermesh projections to non-Lagrange elements.

Minutes: Conversation about general version - conclusion that it is likely to be slower without the structure currently included (we should find out at some point) Important to ensure documentation is updated with this capability. Tests timing out - seems to be to do with IO Approved pending merge

PB: Adaptive Multigrid PR #4726

Includes demo.

Needs to wait for #4804 to be merged so it can be simplified.

LC: Mixed interpolation matrix cross-mesh https://github.com/firedrakeproject/firedrake/pull/4792

LC: Cross-mesh interpolate into Hdiv / Hcurl etc. https://github.com/firedrakeproject/firedrake/pull/4804

Queue: Merge #4839, Fix later ones to use this, then merge

Merge PRs

Date of next meeting

1600 UTC 2026-02-05