[petsc-users] snes_type aspin without DA example

[Karin&NiKo]

Thank you Barry. I will try this.
Should I provide a test in src/binding/petsc4py/test/test_snes.py ?

Le jeu. 22 juin 2023 à 20:41, Barry Smith <bsmith at petsc.dev> a écrit :

>
>   You are not missing anything. The petsc4py stub for
> SNESNASMSetSubdomains() has not been written. You could add it by adding to
>
> src/petsc4py/PETSc/SNES.pyx and src/petsc4py/PETSc/petscsnes.pxi and then
> make a merge request  https://petsc.org/release/developers/contributing/ to get
> it into PETSc.
>
> On Jun 22, 2023, at 1:54 PM, Karin&NiKo <niko.karin at gmail.com> wrote:
>
> Dear PETSc team,
>
> I would like to play with aspin-type nonlinear solvers. I have found
> several tests like snes/tutorials/ex19.c but they all use DA, which I don't
> want to use since I need to stick at the algebraic level.
> Then, I started looking at petsc4py/demo/ode/heat.py and tried to set up
> things.
> Unfortunately, I get the error "DM has no default decomposition defined.
> Set subsolves manually with SNESNASMSetSubdomains()" which, I think, I do
> understand.
> But I do not find any implementation of the SNESNASMSetSubdomains in
> petsc4py.
> Am I missing something ?
> Thanks,
> Nicolas
>
>
>
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