petsc-3.7.7 2017-09-25

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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
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages