Yes, this is a bug. We previously declared a tiny trust region as converged but in fact it is not diverged. In the master branch it now comes up as a negative value in indicating diverging of the nonlinear solver. Sorry for the confusion.
Barry > On Aug 5, 2019, at 10:38 AM, Fande Kong via petsc-users > <[email protected]> wrote: > > I have zero experience on the trust region Newton. I would like PETSc Team > chime in. > > Fande, > > On Mon, Aug 5, 2019 at 9:34 AM Gary Hu <[email protected]> wrote: > Hello Group, > > When I use -snes_type newtontr > > I sometimes get CONVERGED_TR_DELTA instead of CONVERGED_FNORM. > > My guess is that the trust region size keeps reducing until it becomes > smaller than the tolerance. > > Is there a way to force the algorithm to converge only due to FNORM? > > Thanks, > Gary > > -- > You received this message because you are subscribed to the Google Groups > "moose-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/moose-users/f1aa52c1-b146-4703-91f4-a034cbe6be3b%40googlegroups.com.
