PCGASMSetUseDMSubdomains#
Indicates whether to use DMCreateDomainDecomposition() to define the subdomains, whenever possible for PCGASM
Synopsis#
#include "petscpc.h"
PetscErrorCode PCGASMSetUseDMSubdomains(PC pc, PetscBool flg)
Logically Collective
Input Parameters#
pc - the preconditioner
flg - boolean indicating whether to use subdomains defined by the
DM
Options Database Key#
-pc_gasm_dm_subdomains - configure subdomains
-pc_gasm_overlap - set overlap
-pc_gasm_total_subdomains - set number of subdomains
Note#
PCGASMSetSubdomains(), PCGASMSetTotalSubdomains() or PCGASMSetOverlap() take precedence over PCGASMSetUseDMSubdomains(),
so setting PCGASMSetSubdomains() with nontrivial subdomain ISs or any of PCGASMSetTotalSubdomains() and PCGASMSetOverlap()
automatically turns the latter off.
See Also#
KSP: Linear System Solvers, PCGASM, PCGASMGetUseDMSubdomains(), PCGASMSetSubdomains(), PCGASMSetOverlap()
PCGASMCreateSubdomains2D()
Level#
intermediate
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages