TaoSetHessian#
Sets the function to compute the Hessian as well as the location to store the matrix.
Synopsis#
#include "petsctao.h"
PetscErrorCode TaoSetHessian(Tao tao, Mat H, Mat Hpre, PetscErrorCode (*func)(Tao, Vec, Mat, Mat, void *), void *ctx)
Logically collective
Input Parameters#
tao - the
Tao
contextH - Matrix used for the hessian
Hpre - Matrix that will be used to construct the preconditioner, can be same as
H
func - Hessian evaluation routine
ctx - [optional] user-defined context for private data for the Hessian evaluation routine (may be
NULL
)
Calling sequence of func#
tao - the Tao context
x - input vector
H - Hessian matrix
Hpre - matrix used to construct the preconditioner, usually the same as
H
ctx - [optional] user-defined Hessian context
See Also#
TAO: Optimization Solvers, Tao
, TaoTypes
, TaoSetObjective()
, TaoSetGradient()
, TaoSetObjectiveAndGradient()
, TaoGetHessian()
Level#
beginner
Location#
Examples#
src/ts/tutorials/ex20opt_ic.c.html
src/ts/tutorials/ex20opt_p.c.html
src/tao/unconstrained/tutorials/eptorsion1.c.html
src/tao/unconstrained/tutorials/eptorsion2.c.html
src/tao/unconstrained/tutorials/eptorsion2f.F90.html
src/tao/unconstrained/tutorials/eptorsion3.c.html
src/tao/unconstrained/tutorials/minsurf1.c.html
src/tao/unconstrained/tutorials/minsurf2.c.html
src/tao/unconstrained/tutorials/rosenbrock1.c.html
src/tao/unconstrained/tutorials/rosenbrock1f.F90.html
src/tao/unconstrained/tutorials/rosenbrock2.c.html
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages