[petsc-users] [TimeStepping] Eventhandler

[Jed Brown]

Dolfin will need this PR to work with any PETSc 3.10.

https://bitbucket.org/fenics-project/dolfin/pull-requests/508/jed-petsc-310/diff

It's been chillin' there for a couple months; it appears that much of
the Dolfin development effort has moved to DolfinX and Firedrake.

"Huck, Moritz" <Moritz.Huck at rwth-aachen.de> writes:

> I am using the fenics library for my PDE discretization.
> I can not compile fenics with PETSc 3.10.3.
> I will locate the exact error tomorrow.
>
> ________________________________________
> Von: Jed Brown <jed at jedbrown.org>
> Gesendet: Dienstag, 5. Februar 2019 15:30:38
> An: Huck, Moritz; Smith, Barry F.; Abhyankar, Shrirang G
> Cc: PETSc users list
> Betreff: Re: [petsc-users] [TimeStepping] Eventhandler
>
> "Huck, Moritz via petsc-users" <petsc-users at mcs.anl.gov> writes:
>
>> @Shri
>> The system is very stiff, but the stiffness is handled well by ARKIMEX.
>>
>> I'am using PETSc 3.10. (I cannot use 3.10.3 at the moment due to
>> compatibilty with a third library),
>
> What compatibility problem is this?  3.10.3 should be (binary and
> source) backward compatible with other 3.10 releases, so if there is a
> case where it is not, we need to understand it.
>
>
> Regarding the event, it seems there are scenarios where something
> important changes in the model and a conservative time step is
> desirable, and other scenarios where the dynamics after the event are on
> the same scale as before so it makes sense to continue with the same
> step sizes.