petsc-3.9.4 2018-09-11
PCGAMGSetProcEqLim
Set number of equations to aim for per process on the coarse grids via processor reduction.
Synopsis
#include "petscpc.h"
PetscErrorCode PCGAMGSetProcEqLim(PC pc, PetscInt n)
Logically Collective on PC
Input Parameters
| pc | - the preconditioner context
|
| n | - the number of equations
|
Options Database Key
-pc_gamg_process_eq_limit <limit> -
Notes: GAMG will reduce the number of MPI processes used directly on the coarse grids so that there are around <limit> equations on each process
that has degrees of freedom
See Also
PCGAMGSetCoarseEqLim()
Level
intermediate
Location
src/ksp/pc/impls/gamg/gamg.c
Implementations
PCGAMGSetProcEqLim_GAMG in src/ksp/pc/impls/gamg/gamg.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages