petsc-3.11.4 2019-09-28
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PCBDDCSetCoarseningRatio

Set coarsening ratio used in multilevel

Synopsis

#include "petscpc.h" 
PetscErrorCode PCBDDCSetCoarseningRatio(PC pc,PetscInt k)
Logically collective on PC

Input Parameters

pc - the preconditioning context
k - coarsening ratio (H/h at the coarser level)

Options Database Keys

-pc_bddc_coarsening_ratio -

Notes

Approximatively k subdomains at the finer level will be aggregated into a single subdomain at the coarser level

See Also

PCBDDC, PCBDDCSetLevels()

Level

intermediate

Location

src/ksp/pc/impls/bddc/bddc.c

Implementations

PCBDDCSetCoarseningRatio_BDDC in src/ksp/pc/impls/bddc/bddc.c

Index of all PC routines
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Index of all manual pages