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.