KSPGMRESMonitorKrylov#

Calls VecView() to monitor each new direction in the KSPGMRES accumulated Krylov space.

Synopsis#

#include "petscksp.h"  
PetscErrorCode KSPGMRESMonitorKrylov(KSP ksp, PetscInt its, PetscReal fgnorm, void *dummy)

Collective

Input Parameters#

ksp - the KSP context
its - iteration number
fgnorm - 2-norm of residual (or gradient)
dummy - a collection of viewers created with PetscViewersCreate()

Options Database Key#

-ksp_gmres_krylov_monitor - Plot the Krylov directions

Note#

A new PETSCVIEWERDRAW is created for each Krylov vector so they can all be simultaneously viewed

See Also#

KSP: Linear System Solvers, KSPGMRES, KSPMonitorSet(), KSPMonitorResidual(), VecView(), PetscViewersCreate(), PetscViewersDestroy()

Level#

intermediate

Location#

src/ksp/ksp/impls/gmres/gmres.c

Index of all KSP routines
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Index of all manual pages