[petsc-users] petsc4py: PetSc is no longer initialised when calling C Function from Cython

[Lisandro Dalcin]

On 20 October 2011 17:05, Jeff Wiens <jeffrey.k.wiens at gmail.com> wrote:
>
> The problem seems to be that PetSc is no longer initialised when you
> call a C function. If I initialise PETSc from C, the program works.
> However, if I don't call init() from C, the program won't use the
> python PetSc.

Mmm... I bet you built PETSc with static libraries. There is not
(easy&portable) way to mix petsc4py and other C codes when using
static libraries. Please build PETSc with shared libraries.


> Eventually, I would like
> to Initialise PETSc and construct my PETSc vectors in python and then
> have my C code perform operations on them. Again, this yet another
> test problem.
>

Have you seen the demo/wrap-cython example in petsc4py sources?


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Lisandro Dalcin
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