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 tao, Vec x, Mat H, Mat Hpre, void *ctx), void *ctx)

Logically Collective

Input Parameters#

  • tao - the Tao context

  • H - 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#

src/tao/interface/taosolver_hj.c

Examples#

src/tao/unconstrained/tutorials/eptorsion2.c
src/tao/unconstrained/tutorials/minsurf1.c
src/tao/unconstrained/tutorials/rosenbrock1.c
src/tao/unconstrained/tutorials/minsurf2.c
src/tao/unconstrained/tutorials/rosenbrock2.c
src/tao/unconstrained/tutorials/rosenbrock3.c
src/tao/unconstrained/tutorials/eptorsion3.c
src/tao/bound/tutorials/plate2.c
src/tao/bound/tutorials/jbearing2.c
src/tao/unconstrained/tutorials/eptorsion1.c

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