On Thu, Oct 20, 2016 at 9:48 AM, Safin, Artur <[email protected]> wrote:
> Matt, > > > You use >> >> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/ >> MatGetLocalSubMatrix.html >> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Vec/ >> VecGetSubVector.html >> >> to put values directly into the subvectors and submatrices. This >> interacts well with MatNest, so it >> can be optimized after you get it working. >> >> > Thanks, MatNest and VecNest is what I was looking for. > > I have a one more question: if I generate a vector with VecCreateNest, > will it be allocated separately, or does it somehow reuse the space from > the original subvectors? > With a VecNest, the subvector is not copied. Thanks, Matt > Artur > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener
