EPSEVSLSetSlices#

Set the number of slices in which the interval must be subdivided.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSEVSLSetSlices(EPS eps,PetscInt nslices)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • nslices - the number of slices

Options Database Key#

  • -eps_evsl_slices - set the number of slices to n

Notes#

By default, one slice per MPI process is used. Depending on the number of eigenvalues, using more slices may be beneficial, but very narrow subintervals imply higher polynomial degree.

See Also#

EPS: Eigenvalue Problem Solver, EPSEVSLGetSlices()

Level#

intermediate

Location#

src/eps/impls/external/evsl/evsl.c

Implementations#

EPSEVSLSetSlices_EVSL() in src/eps/impls/external/evsl/evsl.c

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