PCFactorSetMatSolverType#
sets the solver package that is used to perform the factorization
Synopsis#
#include "petscpc.h"
PetscErrorCode PCFactorSetMatSolverType(PC pc, MatSolverType stype)
Logically Collective
Input Parameters#
pc - the preconditioner context
stype - for example,
MATSOLVERSUPERLU,MATSOLVERSUPERLU_DIST,MATSOLVERMUMPS
Options Database Key#
-pc_factor_mat_solver_type
- petsc, superlu, superlu_dist, mumps, cusparse
Note#
The default type is set by searching for available types based on the order of the calls to MatSolverTypeRegister() in MatInitializePackage().
Since different PETSc configurations may have different external solvers, seemingly identical runs with different PETSc configurations may use a different solver.
For example if one configuration had –download-mumps while a different one had –download-superlu_dist.
See Also#
KSP: Linear System Solvers, PCLU, PCCHOLESKY, MatGetFactor(), MatSolverType, PCFactorGetMatSolverType(), MatSolverTypeRegister(),
MatInitializePackage(), MATSOLVERSUPERLU, MATSOLVERSUPERLU_DIST, MATSOLVERMUMPS, MatSolverTypeGet()
Level#
intermediate
Location#
Examples#
src/ksp/ksp/tutorials/ex52.c
src/dm/impls/stag/tutorials/ex4.c
src/ksp/ksp/tutorials/ex53.c
src/tao/constrained/tutorials/ex1.c
src/tao/constrained/tutorials/maros.c
Implementations#
PCFactorSetMatSolverType_Factor() in src/ksp/pc/impls/factor/factimpl.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages