[petsc-users] amg from hypre

[Yujie]

I don't know your specific problem. However, to my experience, ILU
preconditioner in Hypre is not good. You can try the preconditioner of
sparse approximation inversion if you can. If you use boomeramg, you should
read its manual carfully. It looks some tricks inside it. FYI.

Regards,
Yujie

On Fri, Feb 19, 2010 at 3:51 PM, <hxie at umn.edu> wrote:

> Hi,
>
> It takes about 8min to solve my problem using the default solver in PETSc
> and 14min using pilut from hypre. But it takes 132min to get the result if
> using the option "-pc_type hypre -pc_hypre_type boomeramg -ksp_type gmres".
> Should I change the default options for amg?
> Any suggestions are welcome.
>
> Hui
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20100219/7bb65787/attachment.htm>