PETSc version 3.15.5
PCGAMGSetProcEqLim
Set number of equations to aim for per process on the coarse grids via processor reduction. 
Synopsis
#include "petscpc.h" 
#include "petscksp.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(), PCGAMGSetRankReductionFactors()
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
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