petsc-3.9.2 2018-05-20
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PCRedundantSetNumber

Sets the number of redundant preconditioner contexts.

Synopsis

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

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.

Keywords

PC, redundant solve

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