mpi4py.MPI.Topocomm

class mpi4py.MPI.Topocomm(comm=None)

Bases: mpi4py.MPI.Intracomm

Topology intracommunicator

Parameters

comm (Optional[Topocomm]) –

Return type

Topocomm

static __new__(cls, comm=None)

Parameters

comm (Optional[Topocomm]) –

Return type

Topocomm

Methods Summary

Ineighbor_allgather(sendbuf, recvbuf)	Nonblocking Neighbor Gather to All
Ineighbor_allgatherv(sendbuf, recvbuf)	Nonblocking Neighbor Gather to All Vector
Ineighbor_alltoall(sendbuf, recvbuf)	Nonblocking Neighbor All-to-All
Ineighbor_alltoallv(sendbuf, recvbuf)	Nonblocking Neighbor All-to-All Vector
Ineighbor_alltoallw(sendbuf, recvbuf)	Nonblocking Neighbor All-to-All Generalized
Neighbor_allgather(sendbuf, recvbuf)	Neighbor Gather to All
Neighbor_allgatherv(sendbuf, recvbuf)	Neighbor Gather to All Vector
Neighbor_alltoall(sendbuf, recvbuf)	Neighbor All-to-All
Neighbor_alltoallv(sendbuf, recvbuf)	Neighbor All-to-All Vector
Neighbor_alltoallw(sendbuf, recvbuf)	Neighbor All-to-All Generalized
neighbor_allgather(sendobj)	Neighbor Gather to All
neighbor_alltoall(sendobj)	Neighbor All to All Scatter/Gather

Attributes Summary

degrees	number of incoming and outgoing neighbors
indegree	number of incoming neighbors
inedges	incoming neighbors
inoutedges	incoming and outgoing neighbors
outdegree	number of outgoing neighbors
outedges	outgoing neighbors

Methods Documentation

Ineighbor_allgather(sendbuf, recvbuf)

Nonblocking Neighbor Gather to All

Parameters

• sendbuf (BufSpec) –

• recvbuf (BufSpecB) –

Return type

Request

Ineighbor_allgatherv(sendbuf, recvbuf)

Nonblocking Neighbor Gather to All Vector

Parameters

• sendbuf (BufSpec) –

• recvbuf (BufSpecV) –

Return type

Request

Ineighbor_alltoall(sendbuf, recvbuf)

Nonblocking Neighbor All-to-All

Parameters

• sendbuf (BufSpecB) –

• recvbuf (BufSpecB) –

Return type

Request

Ineighbor_alltoallv(sendbuf, recvbuf)

Nonblocking Neighbor All-to-All Vector

Parameters

• sendbuf (BufSpecV) –

• recvbuf (BufSpecV) –

Return type

Request

Ineighbor_alltoallw(sendbuf, recvbuf)

Nonblocking Neighbor All-to-All Generalized

Parameters

• sendbuf (BufSpecW) –

• recvbuf (BufSpecW) –

Return type

Request

Neighbor_allgather(sendbuf, recvbuf)

Neighbor Gather to All

Parameters

• sendbuf (BufSpec) –

• recvbuf (BufSpecB) –

Return type

None

Neighbor_allgatherv(sendbuf, recvbuf)

Neighbor Gather to All Vector

Parameters

• sendbuf (BufSpec) –

• recvbuf (BufSpecV) –

Return type

None

Neighbor_alltoall(sendbuf, recvbuf)

Neighbor All-to-All

Parameters

• sendbuf (BufSpecB) –

• recvbuf (BufSpecB) –

Return type

None

Neighbor_alltoallv(sendbuf, recvbuf)

Neighbor All-to-All Vector

Parameters

• sendbuf (BufSpecV) –

• recvbuf (BufSpecV) –

Return type

None

Neighbor_alltoallw(sendbuf, recvbuf)

Neighbor All-to-All Generalized

Parameters

• sendbuf (BufSpecW) –

• recvbuf (BufSpecW) –

Return type

None

neighbor_allgather(sendobj)

Neighbor Gather to All

Parameters

sendobj (Any) –

Return type

List[Any]

neighbor_alltoall(sendobj)

Neighbor All to All Scatter/Gather

Parameters

sendobj (List[Any]) –

Return type

List[Any]

Attributes Documentation

degrees

number of incoming and outgoing neighbors

indegree

number of incoming neighbors

inedges

incoming neighbors

inoutedges

incoming and outgoing neighbors

outdegree

number of outgoing neighbors

outedges

outgoing neighbors