Hi Jinshan, You can pass your initial guess in to the KSP object as X, then at the command line set the flag:
-ksp_initial_guess_nonzero Happy Computing, Aron On Fri, Nov 5, 2010 at 8:41 AM, jinshan wu <wujinshan at yahoo.com> wrote: > Hi all, > > I am using the GMRES linear solver in PETSC. I have a very good initial guess > of > the true solution. Can I somehow supply it to the solver? It should help the > solver speed up the convergence if I can do that. Thanks. > > Jinshan > > > >
