[petsc-users] Near nullspace for preconditioners other than GAMG?

[David Knezevic]

Hi all,

I found that using MatNullSpaceCreateRigidBody as per example 49
<http://www.mcs.anl.gov/petsc/petsc-current/src/ksp/ksp/examples/tutorials/ex49.c.html>
works well with GAMG for a standard elasticity problem, so that's great.

I was just wondering if its possible to achieve the same sort of thing with
other AMG solvers (e.g. BoomerAMG)? I assume that MatSetNearNullSpace does
nothing for external solvers like hypre, right?

Thanks,
David

 <http://www.akselos.com>
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