[petsc-users] Algorithms to remove null spaces in a singular system

[Kong, Fande]

On Wed, Oct 12, 2016 at 10:21 PM, Jed Brown <jed at jedbrown.org> wrote:

> Barry Smith <bsmith at mcs.anl.gov> writes:
> >   I would make that a separate routine that the users would call first.
>
> We have VecMDot and VecMAXPY.  I would propose adding
>
>   VecQR(PetscInt nvecs,Vec *vecs,PetscScalar *R);
>
> (where R can be NULL).
>

What does R mean here?

If nobody working on this, I will be going to take a try.

Fande,


>
> Does anyone use the "Vecs" type?
>
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