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Re: Kubuntu Linux + PETSc Question

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@xxxxxxxxxxx> 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