[petsc-users] Fill-in of factorization

[Jan Blechta]

On Fri, 28 Feb 2014 14:05:35 -0800
Matthew Knepley <knepley at gmail.com> wrote:

> On Fri, Feb 28, 2014 at 1:59 PM, Jan Blechta
> <blechta at karlin.mff.cuni.cz>wrote:
> 
> > On Fri, 28 Feb 2014 12:30:05 -0800
> > Matthew Knepley <knepley at gmail.com> wrote:
> >
> > > On Fri, Feb 28, 2014 at 12:13 PM, Jan Blechta
> > > <blechta at karlin.mff.cuni.cz>wrote:
> > >
> > > > Hi,
> > > >
> > > > is it possible to check an amount of fill-in produced during
> > > > factorization with PCLU or PCCHOLESKY? Or should I ask the
> > > > library, say MUMPS, directly?
> > >
> > >
> > > This is from the PCFactorView():
> > >
> > >       MatInfo info;
> > >       ierr =
> > > MatGetInfo(factor->fact,MAT_LOCAL,&info);CHKERRQ(ierr);
> >
> > MatGetInfo does not seem to be available in petsc4py. Am I grepping
> > correctly?
> >
> 
> It appears to be missing, probably because it passes a struct around.

Is it a bug in petsc4py?

Jan

> 
>   Matt
> 
> 
> > Jan
> >
> > >       ierr = PetscViewerASCIIPrintf(viewer,"  factor fill ratio
> > > given %g, needed
> > >
> > %g\n",(double)info.fill_ratio_given,(double)info.fill_ratio_needed);CHKERRQ(ierr);
> > >
> > >   THanks,
> > >
> > >      MAtt
> > >
> > >
> > > >
> > > > Jan
> > > >
> > >
> > >
> > >
> >
> >
> 
>