"Kong, Fande" <fande.k...@inl.gov> writes: > On Wed, Oct 12, 2016 at 10:21 PM, Jed Brown <j...@jedbrown.org> wrote: > >> Barry Smith <bsm...@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?
It's a QR factorization, where the (right triangular) R is optional.
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