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,….)
Developer Notes#
If KSPSetOperators() has not been called on the inner KSP then PCGALERKIN could use MatRARt() or MatPtAP() to compute
the operators automatically.
Should there be a prefix for the inner KSP?
There is no KSPSetFromOptions_Galerkin() that calls KSPSetFromOptions() on the inner KSP
See Also#
PCCreate(), PCSetType(), PCType, PC,
PCSHELL, PCKSP, PCGalerkinSetRestriction(), PCGalerkinSetInterpolation(), PCGalerkinGetKSP()
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