KSPLSQRMonitorResidualDrawLG

Plots the true residual norm at each iteration of an iterative solver for the KSPLSQR solver

Synopsis

#include "petscksp.h" 
PetscErrorCode KSPLSQRMonitorResidualDrawLG(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 draw::draw_lg - Activates KSPMonitorTrueResidualDrawLG()

See Also

KSP: Linear System Solvers, KSPLSQR, KSPMonitorSet(), KSPMonitorTrueResidual(), KSPLSQRMonitorResidual(), KSPLSQRMonitorResidualDrawLGCreate()

Level

intermediate

Location

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

Implementations

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

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