PCAIRSetCoarsestDiagScalePolys

Sets whether PCAIR diagonally scales before computing the coarse-grid polynomial approximate inverse

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetCoarsestDiagScalePolys(PC pc, PetscBool input_bool)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• input_bool - PETSC_TRUE to diagonally scale before computing the coarse-grid polynomial inverse

Options Database Key

• -pc_air_coarsest_diag_scale_polys (true|false) - diagonally scale before computing the coarse-grid polynomial inverse; defaults to false

Note

Only relevant if using a polynomial inverse type (see PCAIRSetCoarsestInverseType()); if the coarsest inverse type is PFLAREINV_NEUMANN this is always forced true and cannot be overridden.

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetCoarsestDiagScalePolys(), PCAIRSetDiagScalePolys(), PCAIRSetCoarsestInverseType()

Level

advanced

Index of all PC routines
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Index of all manual pages