KSPGCRSetRestart#

Sets number of iterations at which KSPGCR restarts.

Synopsis#

#include "petscksp.h" 
PetscErrorCode KSPGCRSetRestart(KSP ksp, PetscInt restart)

Not Collective

Input Parameters#

  • ksp - the Krylov space context

  • restart - integer restart value

Options Database Key#

  • -ksp_gcr_restart - the number of stored vectors to orthogonalize against

Note#

The default value is 30.

Developer Note#

The API could be made uniform for all KSP methods that have have a restart.

See Also#

KSP: Linear System Solvers, KSPGCR, KSPSetTolerances(), KSPGCRGetRestart(), KSPGMRESSetRestart()

Level#

intermediate

Location#

src/ksp/ksp/impls/gcr/gcr.c

Implementations#

KSPGCRSetRestart_GCR() in src/ksp/ksp/impls/gcr/gcr.c


Index of all KSP routines
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Index of all manual pages