Null-space for elastic problems

[Einar Sørheim]

I have a problem with slow convergence when using cusp on a elasticity FEM matrix, I have previously had success with specifying a null space (e.g using trilinos ML). Seems that in cusp one might do this but it allows for only one column in the nullspace, is there a way to specify multiple null space vectors to cusp?

Regards

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Einar Sørheim