PCPFLAREINVType

The type of approximate inverse applied by PCPFLAREINV, and used as the smoother and coarse-grid solver by PCAIR

Synopsis

typedef enum {
   PFLAREINV_POWER,
   PFLAREINV_ARNOLDI,
   PFLAREINV_NEWTON,
   PFLAREINV_NEWTON_NO_EXTRA,
   PFLAREINV_NEUMANN,
   PFLAREINV_SAI,
   PFLAREINV_ISAI,
   PFLAREINV_WJACOBI,
   PFLAREINV_JACOBI,
}  PCPFLAREINVType;

Values

• PFLAREINV_POWER - GMRES polynomial with the power basis

• PFLAREINV_ARNOLDI - GMRES polynomial with the Arnoldi basis

• PFLAREINV_NEWTON - GMRES polynomial with the Newton basis, with extra roots added for stability

• PFLAREINV_NEWTON_NO_EXTRA - GMRES polynomial with the Newton basis, without extra roots

• PFLAREINV_NEUMANN - Neumann polynomial

• PFLAREINV_SAI - sparse approximate inverse; cannot be applied matrix-free

• PFLAREINV_ISAI - incomplete sparse approximate inverse; cannot be applied matrix-free

• PFLAREINV_WJACOBI - weighted Jacobi

• PFLAREINV_JACOBI - unweighted Jacobi

Note

The two Jacobi types exist mainly for use as smoothers in PCAIR; for a standalone Jacobi preconditioner use PETSc’s PCJACOBI.

See Also

KSP: Linear System Solvers, PCPFLAREINV, PCAIR, PCPFLAREINVSetType(), PCPFLAREINVGetType(), PCAIRSetInverseType(), PCAIRGetInverseType()

Level

intermediate

Index of all PC routines
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Index of all manual pages