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#

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

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Index of all KSP routines
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Index of all manual pages