[petsc-users] Storage space for symmetric (SBAIJ) matrix

[Jed Brown]

On Tue, Sep 21, 2010 at 16:20, Daniel Langr <daniel.langr at gmail.com> wrote:
> thanks much for your comprehensive answer, it will certainly help. I will
> look at the example codes. As for matrix assembly process, I would prefer
> constructing a matrix from arrays (to avoid dynamic assembly and additional
> memory costs) but there is nothing like MatCreateMPISBAIJWithArrays() or
> better MatCreateMPISBAIJWithSplitArrays() for symmetric matrices as for
> unsymmetric ones in PETSc.

This would be easy to add, but how would you go about building the
arrays yourself?  What sort of problems are you solving?

Jed