[petsc-users] Parallel dense solve with submatrices

Toon Weyens weyenst at gmail.com
Mon Aug 28 08:17:50 CDT 2017

Very interesting! I might try this afterwards, with H2lib.

Also, I must say that the strumpack interface looks promising. What did you
mean by "only for the sparse part", by the way? Also, any idea when it is
going to be released in an official petsc release, preferably with some


On Mon, Aug 28, 2017 at 12:15 PM Jose E. Roman <jroman at dsic.upv.es> wrote:

> > El 28 ago 2017, a las 10:15, Toon Weyens <weyenst at gmail.com> escribió:
> >
> > Thank you Barry, that explains why I couldn't find information about it.
> I am now going to implement this straight-forward implementation as a first
> step.
> >
> > In the long term it would in any case be useful to have a solver that
> uses H-matrices, such as H2lib.
> >
> > Is there any chance Petsc is thinking about moving to this kind of
> matrices as well in the future?
> >
> >
> You can use H2lib in a PETSc program by wrapping it in a shell matrix. We
> did this some time ago https://doi.org/10.1016/j.cam.2012.07.021
> Also, PETSc has an interface to STRUMPACK, but only to the sparse part and
> I guess what you need is the dense part.
> Jose
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