EPSArnoldiSetDelayed#

Activates or deactivates delayed reorthogonalization in the Arnoldi iteration.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSArnoldiSetDelayed(EPS eps,PetscBool delayed)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • delayed - boolean flag

Options Database Key#

  • -eps_arnoldi_delayed - Activates delayed reorthogonalization in Arnoldi

Note#

Delayed reorthogonalization is an aggressive optimization for the Arnoldi eigensolver than may provide better scalability, but sometimes makes the solver converge less than the default algorithm.

See Also#

EPS: Eigenvalue Problem Solver, EPSArnoldiGetDelayed()

Level#

advanced

Location#

src/eps/impls/krylov/arnoldi/arnoldi.c

Implementations#

EPSArnoldiSetDelayed_Arnoldi() in src/eps/impls/krylov/arnoldi/arnoldi.c

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