petsc-3.14.6 2021-03-30
PCSetErrorIfFailure
Causes PC to generate an error if a FPE, for example a zero pivot, is detected.
Synopsis
#include "petscksp.h"
PetscErrorCode PCSetErrorIfFailure(PC pc,PetscBool flg)
Logically Collective on PC
Input Parameters
| pc | - iterative context obtained from PCCreate()
|
| flg | - PETSC_TRUE indicates you want the error generated
|
Notes
Normally PETSc continues if a linear solver fails due to a failed setup of a preconditioner, you can call KSPGetConvergedReason() after a KSPSolve()
to determine if it has converged or failed. Or use -ksp_error_if_not_converged to cause the program to terminate as soon as lack of convergence is
detected.
This is propagated into KSPs used by this PC, which then propagate it into PCs used by those KSPs
See Also
PCGetInitialGuessNonzero(), PCSetInitialGuessKnoll(), PCGetInitialGuessKnoll()
Level
advanced
Location
src/ksp/pc/interface/precon.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages