slepc-3.22.1 2024-10-28
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SVDMonitorConditioning

Print the condition number at each iteration of the singular value solver.

Synopsis

#include "slepcsvd.h" 
PetscErrorCode SVDMonitorConditioning(SVD svd,PetscInt its,PetscInt nconv,PetscReal *sigma,PetscReal *errest,PetscInt nest,PetscViewerAndFormat *vf)
Collective

Input Parameters

svd  - singular value solver context
its  - iteration number
nconv  - (unused) number of converged singular triplets so far
sigma  - (unused) singular values
errest  - (unused) error estimates
nest  - (unused) number of error estimates to display
vf  - viewer and format for monitoring

Options Database Key

-svd_monitor_conditioning  - activates SVDMonitorConditioning()

Note

Works only for solvers that use a DS of type GSVD. The printed information corresponds to the maximum of the condition number of the two generated bidiagonal matrices.

See Also

SVDMonitorSet(), SVDMonitorAll(), SVDMonitorFirst(), SVDMonitorConverged()

Level

intermediate

Location

src/svd/interface/svdmon.c

Index of all SVD routines
Table of Contents for all manual pages
Index of all manual pages