[petsc-dev] MUMPS and 64 bit indices

[Matthew Knepley]

On Mon, Dec 15, 2014 at 4:17 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>
>   I cannot fix this. There is a cycle in the dependencies if I introduce
> libraryOptions inside package.py so package.py cannot do the consistency
> check, but it should so it is totally screwed.
>
>   Matt could fix it but he'd probably have to fuck up the nice simplicity
> of the code that is there now :-(!


We were already using a mechanism to get around this circularity. Comments
on the aesthetic import welcome.


https://bitbucket.org/petsc/petsc/branch/knepley/fix-configure-package-check

   Matt


>
>   Barry
>
> > On Dec 15, 2014, at 3:42 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> >
> >
> >> On Dec 15, 2014, at 3:16 PM, Garth N. Wells <gnw20 at cam.ac.uk> wrote:
> >>
> >> It's possible to configure PETSc with the options
> >>
> >>  --with-64-bit-indices --download-mumps
> >>
> >> and compile and run, but it doesn't look like the MUMPS interface
> supports 64 bit indices. Should the above combination throw an error at
> configure time?
> >
> >  Yes, there is commented code in the consistency check, I cannot
> remember why it was commented.
> >
> > #      if self.double and not self.scalartypes.precision.lower() ==
> 'double':
> > #        raise RuntimeError('Cannot use '+self.name+' withOUT double
> precision numbers, it is not coded for this capability')
> > #      if not self.complex and self.scalartypes.scalartype.lower() ==
> 'complex':
> > #        raise RuntimeError('Cannot use '+self.name+' with complex
> numbers it is not coded for this capability')
> > #      if self.libraryOptions.integerSize == 64 and
> self.requires32bitint:
> > #        raise RuntimeError('Cannot use '+self.name+' with 64 bit
> integers, it is not coded for this capability')
> >
> >>
> >> (On a side note, SuperLU_dist and Umfpack are flaky with 64 bit
> indices, which seems largely related to calling ParMETIS/METIS).
> >
> >  Hmm, never heard such reports. Are you using the --download-parmetis
> and metis? You should be. Is it reproducible problem?  We'd like to fix it.
> >
> >
> >  Barry
> >
> >>
> >> Garth
> >>
> >
>
>

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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