Monitor the solver and the current solution. This routine will record the iteration number and residual statistics, call any monitors specified by the user, and calls the convergence-check routine.
PetscErrorCode TaoMonitor(Tao tao, PetscInt its, PetscReal f, PetscReal res, PetscReal cnorm, PetscReal steplength)
|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 distince 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.
reason -The termination reason, which can equal TAO_CONTINUE_ITERATING
Options Database Key
-tao_monitor -Use the default monitor, which prints statistics to standard output
TaoGetConvergedReason(), TaoMonitorDefault(), TaoSetMonitor()
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages