On Thu, Feb 4, 2016 at 9:08 AM, John Peterson <jwpeter...@gmail.com> wrote:
> > > On Wed, Feb 3, 2016 at 5:48 PM, Roy Stogner <royst...@ices.utexas.edu> > wrote: > >> >> On Wed, 3 Feb 2016, John Peterson wrote: >> >> On Wed, Feb 3, 2016 at 4:31 PM, Junchao Zhang <junchao.zh...@gmail.com> >>> wrote: >>> >>> I find libmesh does not accept some PETsc KSP options, such as -ksp_rtol >>>> 0. It is likely that libmesh calls KSPSetFromOptions() too early, >>>> before >>>> other customization routines. >>>> >>> >>> I'd be very surprised if that's the case. We've been setting PETSc >>> command >>> line options from the command line in libmesh for a very long time... >>> >> >> Hmm.. but different options have different APIs, and the order in >> which they're called matters. It looks like we KSPSetFromOptions at >> init time, but then we call KSPSetTolerances at solve time, so the >> latter would override the former. >> > > Ah, I guess it has been a while since I've used the PetscLinearSolver, so > color me surprised. > > Looks like PetscNonlinearSolver does the right thing here (calls > KSPSetFromOptions immediately after KSPSetTolerances) so I'll patch the > PetscLinearSolver in the same way. > This issue with KSPSetFromOptions is now fixed in 24028fc. -- John ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
