PCAIRSetInverseSparsityOrder

Sets the power of the operator matrix used as the sparsity pattern of assembled PCAIR approximate inverses

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetInverseSparsityOrder(PC pc, PetscInt input_int)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• input_int - the power of the operator matrix used as the sparsity of assembled inverses

Options Database Key

• -pc_air_inverse_sparsity_order sparsity_order - the power of the operator matrix used as the sparsity of assembled inverses; defaults to 1

Note

When PCAIRSetZType() is AIR_Z_PRODUCT this also sets the distance of the grid-transfer operators, since that distance is -pc_air_inverse_sparsity_order + 1.

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetInverseSparsityOrder(), PCAIRSetInverseType(), PCAIRSetCInverseSparsityOrder(), PCAIRSetLairDistance()

Level

advanced

Index of all PC routines
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