NEPCISSSetThreshold#

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

Synopsis#

#include "slepcnep.h" 
PetscErrorCode NEPCISSSetThreshold(NEP nep,PetscReal delta,PetscReal spur)

Logically Collective

Input Parameters#

  • nep - the nonlinear eigensolver context

  • delta - threshold for numerical rank

  • spur - spurious threshold (to discard spurious eigenpairs)

Options Database Keys#

  • -nep_ciss_delta - Sets the delta

  • -nep_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#

NEP: Nonlinear Eigenvalue Problems, NEPCISSGetThreshold()

Level#

advanced

Location#

src/nep/impls/ciss/nciss.c

Implementations#

NEPCISSSetThreshold_CISS() in src/nep/impls/ciss/nciss.c

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