PCRedundantSetNumber#

Sets the number of redundant preconditioner contexts.

Synopsis#

#include "petscksp.h" 
PetscErrorCode PCRedundantSetNumber(PC pc, PetscInt nredundant)

Logically Collective

Input Parameters#

  • pc - the preconditioner context

  • nredundant - number of redundant preconditioner contexts; for example if you are using 64 MPI processes and use an nredundant of 4 there will be 4 parallel solves each on 16 = 64/4 processes.

See Also#

KSP: Linear System Solvers, PCREDUNDANT

Level#

advanced

Location#

src/ksp/pc/impls/redundant/redundant.c

Implementations#

PCRedundantSetNumber_Redundant() in src/ksp/pc/impls/redundant/redundant.c

Index of all PC routines
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Index of all manual pages