petsc-master 2016-09-28
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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
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages