PETSc version 3.15.5
PCGAMGSetCoarseEqLim
Set maximum number of equations on coarsest grid. 
Synopsis
#include "petscpc.h" 
#include "petscksp.h" 
PetscErrorCode PCGAMGSetCoarseEqLim(PC pc, PetscInt n)
Collective on PC
Input Parameters
|  | pc | - the preconditioner context | 
|  | n | - maximum number of equations to aim for | 
Options Database Key
|  | -pc_gamg_coarse_eq_limit <limit> | 
Notes: For example -pc_gamg_coarse_eq_limit 1000 will stop coarsening once the coarse grid
has less than 1000 unknowns.
See Also
 PCGAMGSetProcEqLim(), PCGAMGSetRankReductionFactors()
Level
intermediate
Location
src/ksp/pc/impls/gamg/gamg.c
Implementations
PCGAMGSetCoarseEqLim_GAMG in src/ksp/pc/impls/gamg/gamg.c
Index of all PC routines
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