petsc-3.7.7 2017-09-25

TaoSubsetType

PetscInt representing the way TAO handles active sets

typedef enum {TAO_SUBSET_SUBVEC,TAO_SUBSET_MASK,TAO_SUBSET_MATRIXFREE} TaoSubsetType;

	TAO_SUBSET_SUBVEC	- TAO uses PETSc's MatGetSubMatrix and VecGetSubVector
	TAO_SUBSET_MASK	- Matrices are zeroed out corresponding to active set entries
	TAO_SUBSET_MATRIXFREE	- Same as TAO_SUBSET_MASK, but can be applied to matrix-free operators

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