On Wed, Mar 23, 2011 at 11:46 AM, Rebecca Xuefei Yuan <xy2102 at columbia.edu>wrote:
> Hi, > > If the nonlinear system is evaluated at F(u) = 0 in "FormFunction()", but > the symbolic Jacobian is not provided. Is there any options that I can call > to solve the corresponding linear system by direct solver? > -snes_fd, which is very slow. Matt > Thanks very much! > > Best regards, > > Rebecca > > > -- 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110323/cac85a69/attachment.htm>
