[petsc-users] parallel ILU

[Barry Smith]

On Feb 16, 2010, at 9:19 AM, Jed Brown wrote:

> On Mon, 15 Feb 2010 12:45:21 -0500, Craig Tanis <craig- 
> tanis at utc.edu> wrote:
>> It is possible to do ILU-k preconditioning on an MPI matrix, right?
>
> Note that ILU (regardless of fill) scales very poorly, so it really  
> only
> makes sense on a small number of cores, and even then, only if you  
> can't
> find anything else that works.  As Matt says, build with Hypre, then
>
>   -pc_type hypre -pc_hypre_type euclid -pc_hypre_euclid_levels k
>
> Jed

   Also note that there is no support for BAIJ matrices. It is only a  
"scalar" ILU, not one that works on little blocks.

     Barry