KSPLSQRMonitorResidual#

Prints the residual norm, as well as the normal equation residual norm, at each iteration of an iterative solver for the KSPLSQR solver

Synopsis#

#include "petscksp.h" 
PetscErrorCode KSPLSQRMonitorResidual(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_lsqr_monitor - Activates KSPLSQRMonitorResidual()

See Also#

KSP: Linear System Solvers, KSPLSQR, KSPMonitorSet(), KSPMonitorResidual(), KSPMonitorTrueResidualMaxNorm(), KSPLSQRMonitorResidualDrawLG()

Level#

intermediate

Location#

src/ksp/ksp/impls/lsqr/lsqr.c

Implementations#

KSPLSQRMonitorResidual_LSQR in src/ksp/ksp/impls/lsqr/lsqr.c

Index of all KSP routines
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Index of all manual pages