TaoGetConvergenceHistory#

Gets the arrays used that hold the convergence history.

Synopsis#

#include "petsctao.h" 
PetscErrorCode TaoGetConvergenceHistory(Tao tao, PetscReal **obj, PetscReal **resid, PetscReal **cnorm, PetscInt **lits, PetscInt *nhist)

Collective

Input Parameter#

  • tao - the Tao context

Output Parameters#

  • obj - array used to hold objective value history

  • resid - array used to hold residual history

  • cnorm - array used to hold constraint violation history

  • lits - integer array used to hold linear solver iteration count

  • nhist - size of obj, resid, cnorm, and lits

Notes#

This routine must be preceded by calls to TaoSetConvergenceHistory() and TaoSolve(), otherwise it returns useless information.

This routine is useful, e.g., when running a code for purposes of accurate performance monitoring, when no I/O should be done during the section of code that is being timed.

Fortran Notes#

The calling sequence is

   call TaoGetConvergenceHistory(Tao tao, PetscInt nhist, PetscErrorCode ierr)

See Also#

TAO: Optimization Solvers, Tao, TaoSolve(), TaoSetConvergenceHistory()

Level#

advanced

Location#

src/tao/interface/taosolver.c

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