TaoGetSolutionStatus

Get the current iterate, objective value, residual, infeasibility, and termination from a Tao object

Synopsis

#include "petsctao.h" 
PetscErrorCode TaoGetSolutionStatus(Tao tao, PetscInt *its, PetscReal *f, PetscReal *gnorm, PetscReal *cnorm, PetscReal *xdiff, TaoConvergedReason *reason)

Not Collective

Input Parameter

• tao - the Tao context

Output Parameters

• its - the current iterate number (>=0)

• f - the current function value

• gnorm - the square of the gradient norm, duality gap, or other measure indicating distance from optimality.

• cnorm - the infeasibility of the current solution with regard to the constraints.

• xdiff - the step length or trust region radius of the most recent iterate.

• reason - The termination reason, which can equal TAO_CONTINUE_ITERATING

Notes

Tao returns the values set by the solvers in the routine TaoMonitor().

If any of the output arguments are set to NULL, no corresponding value will be returned.

See Also

TAO: Optimization Solvers, TaoMonitor(), TaoGetConvergedReason()

Level

intermediate

Location

src/tao/interface/taosolver.c

Examples

src/tao/unconstrained/tutorials/spectraladjointassimilation.c
src/tao/unconstrained/tutorials/eptorsion2f.F90
src/tao/unconstrained/tutorials/burgers_spectral.c
src/tao/bound/tutorials/jbearing2.c

---

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