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/rosenbrock1.c
src/tao/unconstrained/tutorials/eptorsion2.c
src/tao/constrained/tutorials/ex1.c
src/tao/unconstrained/tutorials/eptorsion3.c
src/tao/tutorials/ex4.c
src/tao/constrained/tutorials/tomographyADMM.c
src/tao/unconstrained/tutorials/rosenbrock1f.F90
src/tao/constrained/tutorials/maros.c
src/tao/unconstrained/tutorials/minsurf2.c
src/tao/unconstrained/tutorials/eptorsion2f.F90

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Index of all Tao routines
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Index of all manual pages