TaoGetHessian

Gets the function to compute the Hessian as well as the location to store the matrix.

Synopsis

#include "petsctao.h" 
PetscErrorCode TaoGetHessian(Tao tao, Mat *H, Mat *Hpre, PetscErrorCode (**func)(Tao tao, Vec x, Mat H, Mat Hpre, void *ctx), void **ctx)

Not Collective

Input Parameter

• tao - the Tao context

Output Parameters

• H - Matrix used for the hessian

• Hpre - Matrix that will be used to construct the preconditioner, can be the same as H

• func - Hessian evaluation routine

• ctx - user-defined context for private data for the Hessian evaluation routine

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, TaoType, TaoGetObjective(), TaoGetGradient(), TaoGetObjectiveAndGradient(), TaoSetHessian()

Level

beginner

Location

src/tao/interface/taosolver_hj.c

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