[petsc-dev] Problem with assembly of Jacobian in ex12 & ex77

[Sander Arens]

I think you forgot to set the order of the finite element spaces, which
default to 0. Does it work if you try for example ex77 with the following
options found here?
<https://bitbucket.org/petsc/petsc/src/8bc5349a152c81f25b59a9592e1e5936c01866af/config/builder.py?at=master&fileviewer=file-view-default#builder.py-562>

Thanks,
Sander

On 27 June 2016 at 15:28, <rickcha at googlemail.com> wrote:

> Dear Petsc developer team,
>
> while learning the ways of the petscFE I came across a curiosity I’d like
> to point out to you. The Jacobians that are created from the petscFE object
> seem to have only 0-entries (apart from the obviously empty regions) in
> examples 12 and 77. That might be due to a limited understanding from my
> side on how exactly petscFE and the mentioned examples work, but it struck
> me as unusual.
>
> Thanks in advance,
>
> M. Hartig
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