PCDeflationSetInitOnly#

Do only initialization step. Sets initial guess to the solution on the deflation space but does not apply the deflation preconditioner. The additional preconditioner is still applied.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCDeflationSetInitOnly(PC pc, PetscBool flg)

Logically Collective

Input Parameters#

  • pc - the preconditioner context

  • flg - default PETSC_FALSE

Options Database Key#

  • -pc_deflation_init_only - if true computes only the special guess

See Also#

KSP: Linear System Solvers, PCDEFLATION

Level#

intermediate

Location#

src/ksp/pc/impls/deflation/deflation.c

Implementations#

PCDeflationSetInitOnly_Deflation() in src/ksp/pc/impls/deflation/deflation.c

Index of all PC routines
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Index of all manual pages