slepc-3.12.0 2019-09-30
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PEPQArnoldiSetLocking

Choose between locking and non-locking variants of the Q-Arnoldi method.

Synopsis

#include "slepcpep.h" 
PetscErrorCode PEPQArnoldiSetLocking(PEP pep,PetscBool lock)
Logically Collective on pep

Input Parameters

pep  - the eigenproblem solver context
lock  - true if the locking variant must be selected

Options Database Key

-pep_qarnoldi_locking  - Sets the locking flag

Notes

The default is to keep all directions in the working subspace even if already converged to working accuracy (the non-locking variant). This behaviour can be changed so that converged eigenpairs are locked when the method restarts.

Note that the default behaviour is the opposite to Krylov solvers in EPS.

See Also

PEPQArnoldiGetLocking()

Location: src/pep/impls/krylov/qarnoldi/qarnoldi.c
Index of all PEP routines
Table of Contents for all manual pages
Index of all manual pages