TaoSubsetType

Type representing the way TAO handles active sets

Synopsis

typedef enum {
  TAO_SUBSET_SUBVEC,
  TAO_SUBSET_MASK,
  TAO_SUBSET_MATRIXFREE
} TaoSubsetType;

Values

• TAO_SUBSET_SUBVEC - Tao uses MatCreateSubMatrix() and VecGetSubVector()

• TAO_SUBSET_MASK - Matrices are zeroed out corresponding to active set entries

• TAO_SUBSET_MATRIXFREE - Same as TAO_SUBSET_MASK but it can be applied to matrix-free operators

Options database Key

• -different_hessian - Tao will use a copy of the Hessian operator for masking. By default TAO will directly alter the Hessian operator.

See Also

TAO: Optimization Solvers, TaoVecGetSubVec(), TaoMatGetSubMat(), Tao, TaoCreate(), TaoDestroy(), TaoSetType(), TaoType

Level

intermediate

Location

include/petsctao.h

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