Using ML via PETSc

Matthew Knepley knepley at
Wed Apr 11 11:38:06 CDT 2007

On 4/11/07, Stephen R Ball <Stephen.R.Ball at> wrote:
> Hi
> I am looking to have a go at using Sandia National Laboratory's ML
> preconditioning package via PETSc. I have looked in your python script
> for ML and the download link refers to v4.0. However, looking at your
> ftp download site I can see that v5.0 is included. Can you tell me if it
> is to safe to use the v5.0 version with PETSc v2.3.2 or should I use
> v4.0.

I think you should use 4.0 with 2.3.2. 5.0 works with the dev version.

> Also, can you tell me if there are any examples of using ML via PETSc.

You should be able to use it on any of the PETSc examples (like KSP ex2)
using -pc_type ml.


> Regards
> Stephen
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