[petsc-dev] strangness in Chebyshev estimate of eigenvalues

[Matthew Knepley]

On Thu, Aug 27, 2015 at 4:52 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
> > On Aug 27, 2015, at 4:38 PM, Mark Adams <mfadams at lbl.gov> wrote:
> >
> > OK, I can put PetscRandom back into GAMG and add a check for DIVERGE_ITS
> in the Cheby solve.  Is that necessary and sufficient?
>
>   Branch?


https://bitbucket.org/petsc/petsc/branch/knepley/feature-drand48-portable

  Matt


> >
> > Mark
> >
> > On Thu, Aug 27, 2015 at 4:25 PM, Matthew Knepley <knepley at gmail.com>
> wrote:
> > On Thu, Aug 27, 2015 at 2:17 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> >
> > > On Aug 27, 2015, at 2:15 PM, Jed Brown <jed at jedbrown.org> wrote:
> > >
> > > Barry Smith <bsmith at mcs.anl.gov> writes:
> > >>   Don't use drand48 directly; use PetscRandom. Matt promised to fix
> up PetscRandom to use it by default and work on all systems so all you need
> to do is use PetscRandom everywhere.
> > >
> > > Yes, that's what I meant.  But we need a deterministic seed.
> >
> >   Matt promised
> >
> > Its in 'next',
> >
> >   -random_type rander48
> >
> >    Matt
> >
> > --
> > 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
> >
>
>


-- 
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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