petsc-3.7.1 2016-05-15
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PCGALERKIN

Build (part of) a preconditioner by P S R (where P is often R^T)
  Use PCGalerkinSetRestriction(pc,R) and/or PCGalerkinSetInterpolation(pc,P) followed by
  PCGalerkinGetKSP(pc,&ksp); KSPSetOperators(ksp,A,....)

Many br

Developer Note: If KSPSetOperators() has not been called then PCGALERKIN could use MatRARt() or MatPtAP() to compute Many brthe operators automatically. Many brShould there be a prefix for the inner KSP. Many brThere is no KSPSetFromOptions_Galerkin() that calls KSPSetFromOptions() on the inner KSP Many br

See Also

PCCreate(), PCSetType(), PCType (for list of available types), PC,
PCSHELL, PCKSP, PCGalerkinSetRestriction(), PCGalerkinSetInterpolation(), PCGalerkinGetKSP() Many br

Level:intermediate
Location:
src/ksp/pc/impls/galerkin/galerkin.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages