Frequently, error control based on local norms is, in fact, preferred, isn't it?
On Tue, Dec 7, 2010 at 1:50 PM, Jed Brown <jed at 59a2.org> wrote: > On Tue, Dec 7, 2010 at 20:45, Barry Smith <bsmith at mcs.anl.gov> wrote: > >> Why can you not use VecAXPY() on the local Vecs? > > > You're absolutely right. I must have been thinking of error control when I > decided this was a problem. You need some sort of norms and don't want to > double-count the ghost entries. > > Jed > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20101207/c06d2cbb/attachment.html>
