On Wed, Dec 14, 2011 at 19:34, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:
> We could support a matrix-free SNESVI if extracting a submatrix from a MF > matrix was implemented by pre-/post-multiplying it by a suitable P, no? You can MatGetSubMatrix() a MatMFFD. The implementation calls MatCreateSubMatrix() and is used by PCFieldSplit. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20111214/f2988e41/attachment.html>