slepc-main 2024-11-15
EPSSetPurify
Deactivate eigenvector purification (which is activated by default).
Synopsis
#include "slepceps.h"
PetscErrorCode EPSSetPurify(EPS eps,PetscBool purify)
Logically Collective
Input Parameters
| eps | - the eigensolver context
|
| purify | - whether purification is required or not
|
Options Database Keys
| -eps_purify <boolean> | - Sets/resets the boolean flag 'purify'
|
Notes
By default, eigenvectors of generalized symmetric eigenproblems are purified
in order to purge directions in the nullspace of matrix B. If the user knows
that B is non-singular, then purification can be safely deactivated and some
computational cost is avoided (this is particularly important in interval computations).
See Also
EPSGetPurify(), EPSSetInterval()
Level
intermediate
Location
src/eps/interface/epsopts.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages