On 06.01.2012 09:35, Jed Brown wrote: > On Fri, Jun 1, 2012 at 9:27 AM, Jozsef Bakosi <jbakosi at lanl.gov> wrote: > > > It seems like your suggestion > > > > -mg_coarse_redundant_pc_factor_zeropivot <2.22045e-14>: Pivot is > > considered zero if less than (PCFactorSetZeroPivot) > > > > remedies the problem as I'm not getting the zeropivot error anymore. I > > guess the problem was at the coarsest MG level. I set > > mg_coarse_redundent_pc_factor to 1.0e-20 and that helped. > > > > Yes, but is the convergence good now?
Yeah. It seems like I get a similar convergence that I was getting on lower core counts: 20-30 MG iterations on a 80 million cell mesh. Jozsef
