[petsc-users] Parallel dense solve with submatrices

[Jose E. Roman]

> 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