On Wed, 2 Nov 2011 15:53:27 -0500, Barry Smith <bsmith at mcs.anl.gov> wrote: > On Nov 2, 2011, at 3:42 PM, Matthew Knepley wrote: > >> On Wed, Nov 2, 2011 at 8:38 PM, xiaohl <xiaohl at ices.utexas.edu> >> wrote: >> Hi >> >> I am going to implement cell center difference method for >> u = - K grad p >> div u = f >> where p is the pressure , u is the velocity, f is the source term. >> >> my goal is to assemble the matrix and test the performance of >> different linear solvers in parallel. >> >> my question is how can I read the input file for K where K is n*n >> tensor. >> >> MatLoad() > > Hm, I think you should use a DMDA with n*n size dof and then use > VecLoad() to load the entries of K. > > Barry > >> >> second one is that do you have any similar examples? >> >> Nothing with the mixed-discretization of the Laplacian. >> >> Matt >> >> Hailong >> >> >> >> -- >> 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
Thanks. I will try it. Hailong
