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 context

  • H - Matrix used for the hessian

  • Hpre - Matrix that will be used operated on by 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#

func(Tao tao,Vec x,Mat H,Mat Hpre,void *ctx);
  • tao - the Tao context

  • x - input vector

  • H - Hessian matrix

  • Hpre - preconditioner matrix, usually the same as H

  • ctx - [optional] user-defined Hessian context

See Also#

Tao, TaoTypes, TaoSetObjective(), TaoSetGradient(), TaoSetObjectiveAndGradient(), TaoGetHessian()

Level#

beginner

Location#

src/tao/interface/taosolver_hj.c

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


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