PCAIRSetInverseType

Sets the type of approximate inverse used as the PCAIR F-point smoother

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetInverseType(PC pc, PCPFLAREINVType inverse_type)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• inverse_type - the approximate inverse type, one of PFLAREINV_POWER, PFLAREINV_ARNOLDI, PFLAREINV_NEWTON, PFLAREINV_NEWTON_NO_EXTRA, PFLAREINV_NEUMANN, PFLAREINV_SAI, PFLAREINV_ISAI, PFLAREINV_WJACOBI, or PFLAREINV_JACOBI

Options Database Key

• -pc_air_inverse_type (power|arnoldi|newton|newton_no_extra|neumann|sai|isai|wjacobi|jacobi) - the approximate inverse type used for the F-point smoother; defaults to arnoldi

Note

Together with PCAIRSetZType() this selects the reduction multigrid method, for example product + arnoldi gives AIRG and lair + wjacobi gives lAIR; see PCPFLAREINVType for what each value means.

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetInverseType(), PCPFLAREINVType, PCAIRSetCInverseType(), PCAIRSetZType(), PCAIRSetPolyOrder()

Level

intermediate

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