MFNSetDimensions#

Sets the dimension of the subspace to be used by the solver.

Synopsis#

#include "slepcmfn.h" 
PetscErrorCode MFNSetDimensions(MFN mfn,PetscInt ncv)

Logically Collective

Input Parameters#

  • mfn - the matrix function solver context

  • ncv - the maximum dimension of the subspace to be used by the solver

Options Database Key#

  • -mfn_ncv - Sets the dimension of the subspace

Notes#

Use PETSC_DETERMINE for ncv to assign a reasonably good value, which is dependent on the solution method.

See Also#

MFN: Matrix Function, MFNGetDimensions()

Level#

intermediate

Location#

src/mfn/interface/mfnopts.c

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