[petsc-users] [petsc-maint] PETSc bugs

[Mark Adams]

On Sat, Mar 23, 2019 at 10:04 PM Dian Han <dianhan at 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.
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