GenericPreconditioner

class dolfin.cpp.la.GenericPreconditioner

Bases: object

This class provides a common base preconditioners.

set_coordinates()

Set the coordinates of the operator (matrix) rows and geometric dimension d. This is can be used by required for certain preconditioners, e.g. ML. The input for this function can be generated using GenericDofMap::tabulate_all_dofs.

set_nullspace()

Set the (approximate) null space of the preconditioner operator (matrix). This is required for certain preconditioner types, e.g. smoothed aggregation multigrid

thisown

The membership flag