SVDTRLanczosSetLocking#
Choose between locking and non-locking variants of the thick-restart Lanczos method.
Synopsis#
#include "slepcsvd.h"
PetscErrorCode SVDTRLanczosSetLocking(SVD svd,PetscBool lock)
Logically Collective
Input Parameters#
svd - the singular value solver
lock - true if the locking variant must be selected
Options Database Key#
-svd_trlanczos_locking - Sets the locking flag
Notes#
The default is to lock converged singular triplets when the method restarts. This behaviour can be changed so that all directions are kept in the working subspace even if already converged to working accuracy (the non-locking variant).
See Also#
SVDTRLanczosGetLocking()
Level#
advanced
Location#
Implementations#
SVDTRLanczosSetLocking_TRLanczos() in src/svd/impls/trlanczos/trlanczos.c
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