On Mar 20, 2013, at 2:12 PM, Mehrdad H Farahani <mh.farahani at gmail.com> wrote:
> I'm experience a weird convergence problem with bcgsl with both ILU and GAMG > preconditioning. The problem converges normally (at least in the > preconditioned norm), but then kicks out with converged reason = -4. I've > attached the convergence history of the previous time-step which worked and > the timestep which shows problems. Could someone give me an idea on how to > proceed? > Did you run with -ksp_converged_reason ? I don't know were this -4 comes from. Could this be from your code? > Best Regards > > -- > Mehrdad > > > <convergence>
