PCGASMGetSubKSP#
Gets the local KSP contexts for all subdomains on this MPI process.
Synopsis#
#include "petscpc.h"
PetscErrorCode PCGASMGetSubKSP(PC pc, PetscInt *n_local, PetscInt *first_local, KSP *ksp[])
Collective iff first_local is requested
Input Parameter#
pc - the preconditioner context
Output Parameters#
n_local - the number of blocks on this MPI process or
NULLfirst_local - the global number of the first block on this process or
NULL, all processes must request or all must passNULLksp - the array of
KSPcontexts
Note#
After PCGASMGetSubKSP() the array of KSPes is not to be freed
Currently for some matrix implementations only 1 block per MPI process is supported.
You must call KSPSetUp() before calling PCGASMGetSubKSP().
See Also#
KSP: Linear System Solvers, PCGASM, PCGASMSetSubdomains(), PCGASMSetOverlap(),
PCGASMCreateSubdomains2D(),
Level#
advanced
Location#
Examples#
Implementations#
PCGASMGetSubKSP_GASM() in src/ksp/pc/impls/gasm/gasm.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages