petsc-3.13.6 2020-09-29
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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()

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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