SVDTRLanczosSetExplicitMatrix#

Indicate if the stacked matrix \(Z=[A^*,B^*]^*\) must be built explicitly.

Synopsis#

#include "slepcsvd.h" 
PetscErrorCode SVDTRLanczosSetExplicitMatrix(SVD svd,PetscBool explicitmat)

Logically Collective

Input Parameters#

  • svd - the singular value solver context

  • explicitmat - Boolean flag indicating if \(Z\) is built explicitly

Options Database Key#

  • -svd_trlanczos_explicitmatrix - enable the explicit construction of the stacked matrix

Note#

This option is relevant for the GSVD case only. \(Z\) is the coefficient matrix of the KSP solver used internally.

See Also#

SVD: Singular Value Decomposition, SVDTRLANCZOS, SVDTRLanczosGetExplicitMatrix()

Level#

advanced

Location#

src/svd/impls/trlanczos/trlanczos.c

Examples#

src/svd/tutorials/ex51.c

Implementations#

SVDTRLanczosSetExplicitMatrix_TRLanczos() in src/svd/impls/trlanczos/trlanczos.c

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