TaoSetResidualWeights#

Give weights for the residual values. A vector can be used if only diagonal terms are used, otherwise a matrix can be give. If this function is not provided, or if sigma_v and vals are both NULL, then the identity matrix will be used for weights.

Synopsis#

#include "petsctao.h" 
PetscErrorCode TaoSetResidualWeights(Tao tao, Vec sigma_v, PetscInt n, PetscInt *rows, PetscInt *cols, PetscReal *vals)

Collective

Input Parameters#

  • tao - the Tao context

  • sigma_v - vector of weights (diagonal terms only)

  • n - the number of weights (if using off-diagonal)

  • rows - index list of rows for sigma_v

  • cols - index list of columns for sigma_v

  • vals - array of weights

Note#

Either sigma_v or vals should be NULL

See Also#

TAO: Optimization Solvers, Tao, TaoSetResidualRoutine()

Level#

intermediate

Location#

src/tao/interface/taosolver_fg.c

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Index of all Tao routines
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Index of all manual pages