petsc-3.10.5 2019-03-28
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# PCBJacobiGetLocalBlocks

Gets the local number of blocks for the block Jacobi preconditioner.

### Synopsis

    #include "petscpc.h"
    PetscErrorCode  PCBJacobiGetLocalBlocks(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

### Note

Currently only a limited number of blocking configurations are supported.

### Keywords

PC, get, number, Jacobi, local, blocks

### See Also

PCSetUseAmat(), PCBJacobiGetTotalBlocks()

### Level

intermediate

### Location

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

### Implementations

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