[petsc-users] Controlling ML

[Satish Balay]

looks like there is no interface function to set this option.

Alternative: use optionsprefix to distuingish diffrent solves

KSPSetOptionsPrefix(ksp1,"solver1_")
KSPSetOptionsPrefix(ksp2,"solver2_")

PetscOptionsSetValue("-solver1_pc_ml_maxNlevels","3");
PetscOptionsSetValue("-solver2_pc_ml_maxNlevels","4");

etc..

Satish





On Fri, 8 Jul 2011, John Fettig wrote:

> Is there any way to control ML other than the options database?  For
> example, I want to set -pc_ml_maxNlevels 3, but there seems to be no
> way to do it other than
> 
> a) the command line or
> b) PetscOptionsSetValue("-pc_ml_maxNlevels","3");
> 
> This doesn't make it easy if you want to have more than one PCML.
> 
> John
>