#include "petscksp.h" PetscErrorCode KSPComputeExtremeSingularValues(KSP ksp,PetscReal *emax,PetscReal *emin)Not Collective Many br
Many users may just want to use the monitoring routine Many brKSPMonitorSingularValue() (which can be set with option -ksp_monitor_singular_value) Many brto print the extreme singular values at each iteration of the linear solve. Many br
Estimates of the smallest singular value may be very inaccurate, especially if the Krylov method has not converged. Many brThe largest singular value is usually accurate to within a few percent if the method has converged, but is still not Many brintended for eigenanalysis. Many br
Disable restarts if using KSPGMRES, otherwise this estimate will only be using those iterations after the last Many brrestart. See KSPGMRESSetRestart() for more details. Many br
Many br
Level:advanced
Location:src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages