KSPMonitorError#
Prints the error norm, as well as the (possibly preconditioned) residual norm, at each iteration of an iterative solver.
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPMonitorError(KSP ksp, PetscInt n, PetscReal rnorm, PetscViewerAndFormat *vf)
Collective
Input Parameters#
ksp - iterative context
n - iteration number
rnorm - 2-norm (preconditioned) residual value (may be estimated).
vf - The viewer context
Options Database Key#
-ksp_monitor_error - Activates
KSPMonitorError()
Note#
This is not called directly by users, rather one calls KSPMonitorSet(), with this function as an argument, to cause the monitor
to be used during the KSP solve.
See Also#
KSP: Linear System Solvers, KSP, KSPMonitorSet(), KSPMonitorResidual(), KSPMonitorTrueResidualMaxNorm()
Level#
intermediate
Location#
src/ksp/ksp/interface/iterativ.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages