TaoDefaultComputeHessianColor#

Computes the Hessian using colored finite differences.

Synopsis#

#include "petsctao.h"  
PetscErrorCode TaoDefaultComputeHessianColor(Tao tao, Vec V, Mat H, Mat B, void *ctx)

Collective

Input Parameters#

  • tao - the Tao context

  • V - compute Hessian at this point

  • ctx - the color object of type MatFDColoring

Output Parameters#

  • H - Hessian matrix (not altered in this routine)

  • B - newly computed Hessian matrix to use with preconditioner (generally the same as H)

See Also#

Tao, MatColoring, TaoSetHessian(), TaoDefaultComputeHessian(), SNESComputeJacobianDefaultColor(), TaoSetGradient()

Level#

advanced

Location#

src/tao/interface/fdiff.c

Examples#

src/tao/unconstrained/tutorials/minsurf2.c


Index of all Tao routines
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Index of all manual pages