Firedrake meeting 2021 08 26

Date and time 2021-08-26 15:00UTC (16:00BST)

Action Items

1. Pick Chair and Minuter.
2. ALL: (ongoing) triage the open issues and confirm if they are indeed still open (and perhaps provide labels)
3. (JB, DH, KS, JW): Firedrake training happening 23rd August, update
4. DH: Firedrake 2021 update

Minutes

Present: LM, DRS, RK, JB, CW, MG, RNH, NB, SK, KS

Apologies: Sophia, DH

RNH/LM: should we fully deprecate python Expression kernels?

Suggested in PR review here.

LM: Yes. Ask in thetis channel.

Delete it and test.

Maybe put Deprecation warning.

DRS: OpenBLAS threads warning

Installed with --with-blas=download via PETSc correctly, but see OMP_NUM_THREAD warning.

Try putting mkl pthred mode?

Put petsc library in the search path when from firedrak import *.

SV: SIAM PP

I am not in the meeting because I'm in holidays, but @Rob Kirby and @Dan Shapero please answer my email :)

Solver hanging issue

JB: If snes is created in a loop, the program can hang.

LM: If we accidentally leave python level thing lying around in the DM, it might not get collected.

We should create better MFE.

Need more thoughts on ref cycle.

Merge PRs:

AOB

Date of next meeting

1500 UTC (1600 BST) 2021-09-02