TaoTermSetCreateHessianMode

Determine the behavior of TaoTermCreateHessianMatricesDefault().

Synopsis

#include "petsctao.h" 
PetscErrorCode TaoTermSetCreateHessianMode(TaoTerm term, PetscBool Hpre_is_H, MatType H_mattype, MatType Hpre_mattype)

Logically collective

Input Parameters

• term - a TaoTerm

• Hpre_is_H - should TaoTermCreateHessianMatricesDefault() make one matrix for H and Hpre?

• H_mattype - the MatType to create for H

• Hpre_mattype - the MatType to create for Hpre

Options Database Keys

• -tao_term_hessian_pre_is_hessian - Whether TaoTermCreateHessianMatrices() should make a separate matrix for constructing the preconditioner

• -tao_term_hessian_mat_type - MatType for Hessian matrix created by TaoTermCreateHessianMatrices()

• -tao_term_hessian_pre_mat_type - MatType for matrix from which a preconditioner can be created by TaoTermCreateHessianMatrices()

See Also

TaoTerm: composable objective function terms, TaoTerm, TaoTermComputeHessian(), TaoTermCreateHessianMatrices(), TaoTermCreateHessianMatricesDefault(), TaoTermGetCreateHessianMode()

Level

developer

Location

src/tao/term/interface/taoterm.c

Examples

src/tao/unconstrained/tutorials/rosenbrock1_taoterm.c

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