DSHSVDSetReorthogonalize#
Sets the reorthogonalization of the left vectors in a DSHSVD.
Synopsis#
#include "slepcds.h"
PetscErrorCode DSHSVDSetReorthogonalize(DS ds,PetscBool reorth)
Logically Collective
Input Parameters#
ds - the direct solver context
reorth - the reorthogonalization flag
Options Database Key#
-ds_hsvd_reorthog
- sets the reorthogonalization flag
Note#
The computed left vectors (U) should be orthogonal with respect to the signature (D).
But it may be necessary to enforce this with a final reorthogonalization step (omitted
by default).
See Also#
DS: Direct Solver (or Dense System), DSHSVDGetReorthogonalize()
Level#
intermediate
Location#
Implementations#
DSHSVDSetReorthogonalize_HSVD() in src/sys/classes/ds/impls/hsvd/dshsvd.c
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