EPSGetIterationNumber#

Gets the current iteration number. If the call to EPSSolve() is complete, then it returns the number of iterations carried out by the solution method.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSGetIterationNumber(EPS eps,PetscInt *its)

Not Collective

Input Parameter#

  • eps - the eigensolver context

Output Parameter#

  • its - number of iterations

Note#

During the i-th iteration this call returns i-1. If EPSSolve() is complete, then parameter “its” contains either the iteration number at which convergence was successfully reached, or failure was detected. Call EPSGetConvergedReason() to determine if the solver converged or failed and why.

See Also#

EPSGetConvergedReason(), EPSSetTolerances()

Level#

intermediate

Location#

src/eps/interface/epssolve.c

Examples#

src/eps/tutorials/ex4.c
src/eps/tutorials/ex1.c
src/eps/tutorials/ex6f.F90
src/eps/tutorials/ex19.c
src/eps/tutorials/ex7.c
src/eps/tutorials/ex31.c

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