KSPHPDDMSetType#
Sets the type of Krylov method used in KSPHPDDM.
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPHPDDMSetType(KSP ksp, KSPHPDDMType type)
Collective
Input Parameters#
ksp - iterative context
type - any of gmres, bgmres, cg, bcg, gcrodr, bgcrodr, bfbcg, or preonly
Notes#
Unlike KSPReset(), this function does not destroy any deflation space attached to the KSP.
As an example, in the following sequence:
KSPHPDDMSetType(ksp, KSPGCRODR);
KSPSolve(ksp, b, x);
KSPHPDDMSetType(ksp, KSPGMRES);
KSPHPDDMSetType(ksp, KSPGCRODR);
KSPSolve(ksp, b, x);
the recycled space is reused in the second KSPSolve().
See Also#
KSP: Linear System Solvers, KSPCreate(), KSPType, KSPHPDDMType, KSPHPDDMGetType()
Level#
intermediate
Location#
Examples#
Implementations#
KSPHPDDMSetType_HPDDM() in src/ksp/ksp/impls/hpddm/hpddm.cxx
Index of all KSP routines
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Index of all manual pages