petsc4py.PETSc.MatPartitioning#

class petsc4py.PETSc.MatPartitioning#

Bases: Object

Object for managing the partitioning of a matrix or graph.

Enumerations

The partitioning types.

Methods Summary

`apply`(partitioning)	Return a partitioning for the graph represented by a sparse matrix.
`create`([comm])	Create a partitioning context.
`destroy`()	Destroy the partitioning context.
`getType`()	Return the partitioning method.
`setAdjacency`(adj)	Set the adjacency graph (matrix) of the thing to be partitioned.
`setFromOptions`()	Set parameters in the partitioner from the options database.
`setType`(matpartitioning_type)	Set the type of the partitioner to use.
`view`([viewer])	View the partitioning data structure.

Methods Documentation

apply(partitioning)#

Return a partitioning for the graph represented by a sparse matrix.

Collective.

For each local node this tells the processor number that that node is assigned to.

See also

create(comm=None)#

Create a partitioning context.

Collective.

Parameters:: comm (Comm | None) – MPI communicator, defaults to Sys.getDefaultComm.
Return type:: Self

See also

destroy()#

Destroy the partitioning context.

Collective.

See also

getType()#

Return the partitioning method.

Not collective.

See also

setAdjacency(adj)#

Set the adjacency graph (matrix) of the thing to be partitioned.

Collective.

Parameters:: adj (Mat) – The adjacency matrix, this can be any Mat.Type but the natural representation is Mat.Type.MPIADJ.
Return type:: None