On Thu, May 31, 2012 at 3:08 PM, Jozsef Bakosi <jbakosi at lanl.gov> wrote:
> Using -sub_pc_factor_zeropivot does not seem to make any difference. > Run with -ksp_view and send the output. Also send the FULL error message when it finds a zero pivot. > > > > > > Is there a way to query the zero pivot value? > > > > > > > 3) Its printed out, 1.0e-12 > > > > Yeah. I mean something like PCFactorGetZeroPivot(), so I can check what > PETSc think I'm trying to use. The above persistent error message seems > to indicate that whatever I'm setting is not being used. > > BTW, this error seems to happen only at larger core counts. I wonder if > that gives you a clue as to what might be the problem (e.g. what might > cause a zeropivot). > What discretization are you using? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120531/520c1a1b/attachment-0001.html>
