mpi4py.MPI.Graphcomm

class mpi4py.MPI.Graphcomm(comm=None)

Bases: Topocomm

General graph topology intracommunicator

Parameters:

comm (Optional[Graphcomm]) –

Return type:

Graphcomm

static __new__(cls, comm=None)

Parameters:

comm (Optional[Graphcomm]) –

Return type:

Graphcomm

Methods Summary

Get_dims()	Return the number of nodes and edges
Get_neighbors(rank)	Return list of neighbors of a process
Get_neighbors_count(rank)	Return number of neighbors of a process
Get_topo()	Return index and edges

Attributes Summary

dims	number of nodes and edges
edges
index
nedges	number of edges
neighbors
nneighbors	number of neighbors
nnodes	number of nodes
topo	topology information

Methods Documentation

Get_dims()

Return the number of nodes and edges

Return type:

Tuple[int, int]

Get_neighbors(rank)

Return list of neighbors of a process

Parameters:

rank (int) –

Return type:

List[int]

Get_neighbors_count(rank)

Return number of neighbors of a process

Parameters:

rank (int) –

Return type:

int

Get_topo()

Return index and edges

Return type:

Tuple[List[int], List[int]]

Attributes Documentation

dims

number of nodes and edges

edges

index

nedges

number of edges

neighbors

nneighbors

number of neighbors

nnodes

number of nodes

topo

topology information