PCFactorSetReuseOrdering

When similar matrices are factored, this causes the ordering computed in the first factor to be used for all following factors.

Synopsis

#include "petscpc.h" 
PetscErrorCode PCFactorSetReuseOrdering(PC pc, PetscBool flag)

Logically Collective

Input Parameters

• pc - the preconditioner context

• flag - PETSC_TRUE to reuse else PETSC_FALSE

Options Database Key

• -pc_factor_reuse_ordering - Activate PCFactorSetReuseOrdering()

See Also

KSP: Linear System Solvers, PCLU, PCCHOLESKY, PCFactorSetReuseFill()

Level

intermediate

Location

src/ksp/pc/impls/factor/cholesky/cholesky.c

Implementations

PCFactorSetReuseOrdering_Factor() in src/ksp/pc/impls/factor/factor.c

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