Kubuntu Linux + PETSc Question

[Aron Ahmadia]

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
>
>