TaoMonitor

Monitor the solver and the current solution. This routine will record the iteration number and residual statistics, and call any monitors specified by the user.

Synopsis

#include "petsctao.h" 
PetscErrorCode TaoMonitor(Tao tao, PetscInt its, PetscReal f, PetscReal res, PetscReal cnorm, PetscReal steplength)

Input Parameters

• tao - the Tao context

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

• f - the current objective function value

• res - the gradient norm, square root of the duality gap, or other measure indicating distance from optimality. This measure will be recorded and used for some termination tests.

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

• steplength - multiple of the step direction added to the previous iterate.

Options Database Key

• -tao_monitor - Use the default monitor, which prints statistics to standard output

See Also

TAO: Optimization Solvers, Tao, TaoGetConvergedReason(), TaoMonitorDefault(), TaoMonitorSet()

Level

developer

Location

src/tao/interface/taosolver.c

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