petsc-3.13.6 2020-09-29
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 used, or if sigma_v and sigma_w are both NULL, then the default 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 on Tao
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_w
|
| cols | - index list of columns for sigma_w
|
| vals | - array of weights
|
Note: Either sigma_v or sigma_w (or both) should be NULL
See Also
TaoSetResidualRoutine()
Level
intermediate
Location
src/tao/interface/taosolver_fg.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages