PCAIRSetImproveWIts

Sets the number of Richardson iterations used by PCAIR to improve the approximate prolongator

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetImproveWIts(PC pc, PetscInt input_int)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• input_int - the number of Richardson iterations

Options Database Key

• -pc_air_improve_w_its its - number of Richardson iterations to improve the approximate prolongator, using the existing W as the initial guess; defaults to 0

Note

The Richardson iteration is preconditioned with the approximate inverse of Aff.

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetImproveWIts(), PCAIRSetImproveZIts()

Level

advanced

Index of all PC routines
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Index of all manual pages