IvanYashchuk / firedrake-ts

67%

Build Type

push

github

Committed by web-flow

Commit Message

Compatibility fix for Firedrake `2024-12` Docker image (#24)

* Remove import of firedrake_configuration package
- Monkey-patch u_restrict property required by newer PETSc TS
- Package is no longer available due to pip install migration

* Fix unit test failures
- Migrate adjoint.py to newer interpolate API
- Set max SNES failures to make TS retry steps

* Migrate examples to newer VTKFile output API
- Silences deprecation warning emitted from Firedrake

* Adapt DAEProblem class to use to restricted solution
- Duck typing compatible with VariationalProblem class
- Use the new member everywhere

* Remove unused & forgotten LOC

---

This PR removes the (actually unused) import of `firedrake_configuration` package that is no longer present in recent (2 weeks or so) versions of [Firedrake Docker Hub image](https://hub.docker.com/r/firedrakeproject/firedrake/tags).

Root cause of the issue is the migration of Firedrake to be `pip`-installable. There's details about the topic [here](https://github.com/firedrakeproject/firedrake/issues/3877). Specifically, the problem started with [the PR that migrates _PyOP2_ into the main _Firedrake_ repo](https://github.com/firedrakeproject/firedrake/pull/3817).

---

It seems like the obvious fix, i.e. just remove the import, worked. The `firedrake_configuration` module wasn't used for anything directly within the `firedrake_ts` package. Besides this, the PR contains a few small fixes to make the unit tests and examples work.

It seems like PETSc 3.22 upgrage that's bundled in the Firedrake 2024-12 image doesn't set the [`ts_max_snes_failures`](https://petsc.org/release/manualpages/TS/TSSetMaxSNESFailures/) option anymore. Somehow the default value causes the inner SNES solver never to retry any linear solves. So the TS solver has no other option but to fail whenever it happens instead of retrying.

I also migrated the example applications to use the newer interpolate and VTK output Firedrake API.

Run Details

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1 existing line in 1 file now uncovered.

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