KSPSetComputeSingularValues

Sets a flag so that the extreme singular values will be calculated via a Lanczos or Arnoldi process as the linear system is solved.

Synopsis

int KSPSetComputeSingularValues(KSP ksp)
Collective on KSP

Input Parameters

ksp -iterative context obtained from KSPCreate()

Options Database Key

-ksp_singmonitor -Activates KSPSetComputeSingularValues()

Notes

Currently this option is not valid for all iterative methods.

Many users may just want to use the monitoring routineKSPSingularValueMonitor() (which can be set with option -ksp_singmonitor) to print the singular values at each iteration of the linear solve.

Keywords

KSP, set, compute, singular values

See Also

KSPComputeExtremeSingularValues(), KSPSingularValueMonitor()

Location: src/ksp/interface/itfunc.c
KSP Index
Table of Contents