PCPatchGetSubKSP

Get the per-patch KSP objects used to solve each local patch problem in a PCPATCH preconditioner

Synopsis

#include "petscpc.h" 
#include "petscmat.h" 
PetscErrorCode PCPatchGetSubKSP(PC pc, PetscInt *npatch, KSP *ksp[])

Not Collective

Input Parameter

• pc - the PCPATCH preconditioner

Output Parameters

• npatch - number of local patches (may be NULL)

• ksp - newly allocated array of length npatch holding the per-patch KSP objects; the caller must free the array with PetscFree()

Note

PCSetUp() must have been called on the PCPATCH (typically through KSPSetUp() on the outer KSP) before calling this routine.

See Also

KSP: Linear System Solvers, PCPATCH, KSP, PCASMGetSubKSP()

Level

advanced

Location

src/ksp/pc/impls/patch/pcpatch.c

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Index of all PC routines
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Index of all manual pages