slepc-3.7.4 2017-05-17
   
EPSSetPurify
Deactivate eigenvector purification (which is activated by default). 
Synopsis
#include "slepceps.h" 
PetscErrorCode EPSSetPurify(EPS eps,PetscBool purify)
Logically Collective on EPS
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()
Location: src/eps/interface/epsopts.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages