slepc-main 2024-11-09
EPSSetProblemType
Specifies the type of the eigenvalue problem.
Synopsis
#include "slepceps.h"
PetscErrorCode EPSSetProblemType(EPS eps,EPSProblemType type)
Logically Collective
Input Parameters
| eps | - the eigensolver context
|
| type | - a known type of eigenvalue problem
|
Options Database Keys
| -eps_hermitian | - Hermitian eigenvalue problem
|
| -eps_gen_hermitian | - generalized Hermitian eigenvalue problem
|
| -eps_non_hermitian | - non-Hermitian eigenvalue problem
|
| -eps_gen_non_hermitian | - generalized non-Hermitian eigenvalue problem
|
| -eps_pos_gen_non_hermitian | - generalized non-Hermitian eigenvalue problem
with positive semi-definite B
|
| -eps_gen_indefinite | - generalized Hermitian-indefinite eigenvalue problem
|
| -eps_bse | - structured Bethe-Salpeter eigenvalue problem
|
Notes
This function must be used to instruct SLEPc to exploit symmetry or other
kind of structure. If no
problem type is specified, by default a non-Hermitian problem is assumed
(either standard or generalized). If the user knows that the problem is
Hermitian (i.e. A=A^H) or generalized Hermitian (i.e. A=A^H, B=B^H, and
B positive definite) then it is recommended to set the problem type so
that eigensolver can exploit these properties.
If the user does not call this function, the solver will use a reasonable
guess.
For structured problem types such as EPS_BSE, the matrices passed in via
EPSSetOperators() must have been created with the corresponding helper
function, i.e., MatCreateBSE().
See Also
EPSSetOperators(), EPSSetType(), EPSGetProblemType(), EPSProblemType
Level
intermediate
Location
src/eps/interface/epsopts.c
Examples
src/eps/tutorials/ex1.c
src/eps/tutorials/ex1f.F90
src/eps/tutorials/ex2.c
src/eps/tutorials/ex3.c
src/eps/tutorials/ex5.c
src/eps/tutorials/ex6f.F90
src/eps/tutorials/ex9.c
src/eps/tutorials/ex10.c
src/eps/tutorials/ex10f.F90
src/eps/tutorials/ex11.c
src/eps/tutorials/ex12.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages