The solver stagnates; you can try to diagnose what's going on using the tips from:
http://www.mcs.anl.gov/petsc/documentation/faq.html#kspdiverged - Peter On Wed, Apr 16, 2014 at 11:38 AM, Que Cat <[email protected]> wrote: > Hi Jed and Peter, > > Please see the attached file for the output. Thank you for your help. > > Que > > > On Wed, Apr 16, 2014 at 10:05 AM, Jed Brown <[email protected]> wrote: > >> Que Cat <[email protected]> writes: >> >> > Dear Petsc-Users, >> > >> > I call the nonliner solver snes in my code and it said that "SNES >> Failed! >> > Reason -3". I testes with "-pc_type lu" and it passed. I have checked >> the >> > hand-coded Jacobian, ant it looks fine. Could you suggest any possible >> > sources of the errors? >> >> Run with -snes_converged_reason -ksp_converged_reason >> -ksp_monitor_true_residual -snes_view and send the output. >> > >
