petsc-3.7.5 2017-01-01

TaoMonitor

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.

Synopsis

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

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 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.

Output Parameters

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

TaoMonitor

Synopsis

Input Parameters

Output Parameters

Options Database Key

See Also