On Wed, Aug 3, 2016 at 2:59 PM, Mark Adams <[email protected]> wrote: > We have a question about the RHS Jacobian (G) for TS. The manual says: > > • Jacobian Gu > If using a fully implicit method and the function G() is provided, one > also can provide an appropriate (approximate) Jacobian matrix of G(). > > If we use, say, backward Euler and provide a G Jacobian, does PETSc > use this G Jacobian in some way? or is the G Jacobian only used for > IMEX methods?
It should definitely work with BEuler. However, I have not personally tested it. That is one thing that will get setup this fall. I will have Plex examples that test all these options. Matt > > Mark > -- 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
