PEPCISSSetThreshold#

Sets the values of various threshold parameters in the CISS solver.

Synopsis#

#include "slepcpep.h" 
PetscErrorCode PEPCISSSetThreshold(PEP pep,PetscReal delta,PetscReal spur)

Logically Collective

Input Parameters#

  • pep - the polynomial eigensolver context

  • delta - threshold for numerical rank

  • spur - spurious threshold (to discard spurious eigenpairs)

Options Database Keys#

  • -pep_ciss_delta - Sets the delta

  • -pep_ciss_spurious_threshold - Sets the spurious threshold

Note#

PETSC_CURRENT can be used to preserve the current value of any of the arguments, and PETSC_DETERMINE to set them to a default value.

See Also#

PEP: Polynomial Eigenvalue Problems, PEPCISSGetThreshold()

Level#

advanced

Location#

src/pep/impls/ciss/pciss.c

Implementations#

PEPCISSSetThreshold_CISS() in src/pep/impls/ciss/pciss.c

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