Kubuntu Linux + PETSc Question

[Berend van Wachem]

Hi,

Before I used ATLAS for blas/lapack, which worked nice, but which I didn't get 
to work with HYPRE.

Berend.

> Dear Fernando,
>
> You'll also want to make sure you're using an optimized blas/lapack
> for your architecture.
>
> I'm guessing the ROCKS cluster kernel is better tuned for scientific
> computing and network performance than the generic Kubuntu kernel.
> Have you tried using a similar kernel to the one provided by ROCKS?
>
> I'm interested in your results--I've also tinkered a bit with Ubuntu,
> especially since the advanced intel compilers are available for free
> on it and not in OS X.
>
> ~A
>
> On 12/19/06, Berend van Wachem <berend at chalmers.se> wrote:
> > Hi Fernando,
> >
> > Have you tried configuring PETSc with the option
> > --with-debugging=0
> >
> > That should generate optimized code.
> >
> > For using hypre, you can specify
> > --download-hypre=yes
> >
> > Good luck,
> >
> > Berend.
> >
> > > Dear All,
> > >
> > > I've found that, for my application, the PETSc that comes in Kubuntu
> > > Linux 64 is twice faster than the one we can get in the PETSc's site. I
> > > want to use Hypre in my application, but I don't know how to use Hypre
> > > with the already compiled PETSc library in Kubuntu. Can you give me
> > > some hints in this task? Or maybe tell what should be reason for this
> > > difference in performance.. maybe I need some flags in order to
> > > optimize PETSc downloaded from the site?
> > >
> > > Thank you.
> > >
> > > Fernando Campos