On Sat, Mar 23, 2019 at 10:04 PM Dian Han <dian...@precision-modeling.com> wrote:
> Thanks, Matt. Is there any PETSc pre-conditioner able to handle ‘0’ > diagonal case? > (Matt told you to use svd.) Fast solvers exploit structure in your problem. If your problems are not arbitrary but have a source in some application then you should do a literature search and see what others have done from application like yours.
