NEPSetTolerances#

Sets the tolerance and maximum iteration count used by the NEP convergence tests.

Synopsis#

#include "slepcnep.h" 
PetscErrorCode NEPSetTolerances(NEP nep,PetscReal tol,PetscInt maxits)

Logically Collective

Input Parameters#

  • nep - the nonlinear eigensolver context

  • tol - the convergence tolerance

  • maxits - maximum number of iterations to use

Options Database Keys#

  • -nep_tol <tol> - sets the convergence tolerance

  • -nep_max_it <maxits> - sets the maximum number of iterations allowed

Note#

Use PETSC_CURRENT to retain the current value of any of the parameters. Use PETSC_DETERMINE for either argument to assign a default value computed internally (may be different in each solver). For maxits use PETSC_UNLIMITED to indicate there is no upper bound on this value.

See Also#

NEP: Nonlinear Eigenvalue Problems, NEPGetTolerances()

Level#

intermediate

Location#

src/nep/interface/nepopts.c

Examples#

src/nep/tutorials/ex22f.F90
src/nep/tutorials/ex20f.F90
src/nep/tutorials/ex22.c
src/nep/tutorials/ex20.c

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