PCBJacobiSetLocalBlocks#

Sets the local number of blocks for the block Jacobi, PCBJACOBI, preconditioner.

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCBJacobiSetLocalBlocks(PC pc, PetscInt blocks, const PetscInt lens[])

Not Collective

Input Parameters#

pc - the preconditioner context
blocks - the number of blocks
lens - [optional] integer array containing size of each block

Options Database Key#

-pc_bjacobi_local_blocks - Sets the number of local blocks

Note#

Currently only a limited number of blocking configurations are supported.

See Also#

PCBJACOBI, PCSetUseAmat(), PCBJacobiSetTotalBlocks()

Level#

intermediate

Location#

src/ksp/pc/impls/bjacobi/bjacobi.c

Examples#

src/ksp/ksp/tutorials/ex7.c
src/ksp/ksp/tutorials/ex7f.F90

Implementations#

PCBJacobiSetLocalBlocks_BJacobi in src/ksp/pc/impls/bjacobi/bjacobi.c

Index of all PC routines
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Index of all manual pages