PCAIRSetZType

Sets the type of grid-transfer (restriction) operator used by PCAIR

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetZType(PC pc, PCAIRZType z_type)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• z_type - the grid-transfer operator type, one of AIR_Z_PRODUCT, AIR_Z_LAIR, or AIR_Z_LAIR_SAI

Options Database Key

• -pc_air_z_type (product|lair|lair_sai) - the grid-transfer operator type; defaults to product

Note

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

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetZType(), PCAIRZType, PCAIRSetInverseType(), PCAIRSetLairDistance()

Level

intermediate

Index of all PC routines
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Index of all manual pages