slepc-main 2024-11-15

EPSKrylovSchurSetDimensions

Sets the dimensions used for each subsolve step in case of doing spectrum slicing for a computational interval. The meaning of the parameters is the same as in EPSSetDimensions().

Synopsis

#include "slepceps.h" 
PetscErrorCode EPSKrylovSchurSetDimensions(EPS eps,PetscInt nev,PetscInt ncv,PetscInt mpd)

Logically Collective

Input Parameters

	eps	- the eigenproblem solver context
	nev	- number of eigenvalues to compute
	ncv	- the maximum dimension of the subspace to be used by the subsolve
	mpd	- the maximum dimension allowed for the projected problem

Options Database Key

	-eps_krylovschur_nev <nev>	- Sets the number of eigenvalues
	-eps_krylovschur_ncv <ncv>	- Sets the dimension of the subspace
	-eps_krylovschur_mpd <mpd>	- Sets the maximum projected dimension

Note

Use PETSC_DETERMINE for ncv and mpd to assign a default value. For any of the arguments, use PETSC_CURRENT to preserve the current value.

Level

advanced

Location

src/eps/impls/krylov/krylovschur/krylovschur.c

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