Firedrake meeting 2025 01 22

Date and time 2025-01-22 1600 UTC

Action Items

1. Pick Chair and Minuter (KS 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: Get Firedrake a docker open source account (link here)
6. DH: Talk to GregVernon about PR#2116.
7. JB: Enable merge queues (minutes)
8. LC: Try to merge RNH' PR: Movable VOM
9. PB: Profile and speed up some tests (minutes, minutes)
10. CW: Fix artefactsv3 issue
11. CW: More testing configurations (minutes)
12. All: Do JM's PRs transpose -> adjoint and Cofunction self-assignment via interpolate

Agenda

Present:

Apologies:

CW: Firedrake versioning?

Versioning would prevent us from accidentally breaking downstream packages with no warning.

• Should we version Firedrake and FIAT? How often would releases be? Semantic or date-based versioning?
• What about our forks of loopy and UFL?
• What about firedrake-zenodo?

One point of consideration is the fact that some of our dependencies (notably loopy) do not regularly make releases. I don't think versioning makes sense if we depend on non-versioned libraries.

CW: Big testing PR: MPI on 'the outside' https://github.com/firedrakeproject/firedrake/pull/3385 describes the changes made. This is valuable for migrating to a pip install as we can properly start using a system MPI.

CW: pip migration plan?

I think we can just:

• Update the install docs
• Make firedrake-install warn about not being maintained any more
• Make an announcement in #general so people know
• Help downstream packages to migrate

Questions

• Can we drop MPICH at the same time? Downstream packages will need to change their CI anyway (which I can do for them).

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.

KS: Fix hex interior-facet integrals

CW: https://github.com/firedrakeproject/firedrake/pull/3976

CW: https://github.com/firedrakeproject/firedrake/pull/3982

Date of next meeting

1600 UTC 2025-01-29