PCHPDDMGetSTShareSubKSP

Gets whether the KSP in SLEPc ST and the fine-level subdomain solver is shared.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCHPDDMGetSTShareSubKSP(PC pc, PetscBool *share)

Input Parameter

• pc - preconditioner context

Output Parameter

• share - whether the KSP is shared or not

Note

This is not the same as PCGetReusePreconditioner(). The return value is unlikely to be true, but when it is, a symbolic factorization can be skipped when using a subdomain PCType such as PCLU or PCCHOLESKY.

See Also

KSP: Linear System Solvers, PCHPDDM, PCHPDDMSetSTShareSubKSP()

Level

advanced

Location

src/ksp/pc/impls/hpddm/pchpddm.cxx

Examples

src/ksp/ksp/tutorials/ex76.c

Implementations

PCHPDDMGetSTShareSubKSP_HPDDM() in src/ksp/pc/impls/hpddm/pchpddm.cxx

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