petsc-3.9.4 2018-09-11
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TaoLineSearchGetNumberFunctionEvaluations

 Gets the number of function and gradient evaluation routines used by the line search in last application (not cumulative).

Synopsis

#include "petsctaolinesearch.h" 
PetscErrorCode TaoLineSearchGetNumberFunctionEvaluations(TaoLineSearch ls, PetscInt *nfeval, PetscInt *ngeval, PetscInt *nfgeval)
Not Collective

Input Parameter

ls -the TaoLineSearch context

Output Parameters

nfeval - number of function evaluations
ngeval - number of gradient evaluations
nfgeval - number of function/gradient evaluations

Note

If the line search is using the Tao objective and gradient routines directly (see TaoLineSearchUseTaoRoutines()), then TAO is already counting the number of evaluations.

Level

intermediate

Location

src/tao/linesearch/interface/taolinesearch.c
Index of all TaoLineSearch routines
Table of Contents for all manual pages
Index of all manual pages