TaoGetTolerances#

gets the current values of some tolerances used for the convergence testing of TaoSolve()

Synopsis#

#include "petsctao.h" 
PetscErrorCode TaoGetTolerances(Tao tao, PetscReal *gatol, PetscReal *grtol, PetscReal *gttol)

Not Collective

Input Parameter#

tao - the Tao context

Output Parameters#

gatol - stop if norm of gradient is less than this
grtol - stop if relative norm of gradient is less than this
gttol - stop if norm of gradient is reduced by a this factor

Note#

NULL can be used as an argument if not all tolerances values are needed

See Also#

TAO: Optimization Solvers, Tao, TaoSetTolerances()

Level#

intermediate

Location#

src/tao/interface/taosolver.c

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