EPSCHASESetDegree#

Sets the degree of the Chebyshev polynomial filter in the ChASE solver.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSCHASESetDegree(EPS eps,PetscInt deg,PetscBool opt)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • deg - initial degree of Chebyshev polynomial filter

  • opt - internal optimization of polynomial degree

Options Database Keys#

  • -eps_chase_degree <deg> - set the initial degree

  • -eps_chase_degree_opt - toggle the optimization

Note#

See the documentation of ChASE [Winkelmann et al., 2019] for details.

References#

[Win19]

J. Winkelmann, P. Springer, and E. Di Napoli. ChASE: Chebyshev accelerated subspace iteration eigensolver for sequences of hermitian eigenvalue problems. ACM Trans. Math. Software, 2019. doi:10.1145/3313828.

See Also#

EPS: Eigenvalue Problem Solver, EPSCHASE, EPSCHASEGetDegree()

Level#

advanced

Location#

src/eps/impls/external/chase/chase.c

Implementations#

EPSCHASESetDegree_ChASE() in src/eps/impls/external/chase/chase.c

Index of all EPS routines Table of Contents for all manual pages Index of all manual pages