PCGetUseAmat#

Gets a flag to indicate that when the preconditioner needs to apply (part of) the operator during the preconditioning process it applies the Amat provided to TSSetRHSJacobian(), TSSetIJacobian(), SNESSetJacobian(), KSPSetOperators() or PCSetOperators() not the Pmat.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCGetUseAmat(PC pc, PetscBool *flg)

Logically Collective

Input Parameter#

  • pc - the preconditioner context

Output Parameter#

Note#

For the common case in which the linear system matrix and the matrix used to construct the preconditioner are identical, this routine is does nothing.

See Also#

KSP: Linear System Solvers, PC, PCSetUseAmat(), PCBJACOBI, PCMG, PCFIELDSPLIT, PCCOMPOSITE

Level#

intermediate

Location#

src/ksp/pc/interface/precon.c


Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages