PCAIRSetReusePolyCoeffs

Sets whether PCAIR also reuses the GMRES polynomial coefficients when reusing the sparsity of the hierarchy

Synopsis

PETSC_EXTERN PetscErrorCode PCAIRSetReusePolyCoeffs(PC pc, PetscBool input_bool)

Logically Collective

Input Parameters

• pc - the PCAIR preconditioner context

• input_bool - PETSC_TRUE to also reuse the GMRES polynomial coefficients

Options Database Key

• -pc_air_reuse_poly_coeffs (true|false) - also reuse the GMRES polynomial coefficients when -pc_air_reuse_sparsity is set; defaults to false

Note

Only useful when regenerating the hierarchy for the same matrix, with coefficients stored and restored using PCAIRGetPolyCoeffs() and PCAIRSetPolyCoeffs(); the coefficients are very sensitive to changes in the matrix.

See Also

KSP: Linear System Solvers, PCAIR, PCAIRGetReusePolyCoeffs(), PCAIRSetReuseSparsity(), PCAIRGetPolyCoeffs(), PCAIRSetPolyCoeffs()

Level

advanced

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