mpi4py.MPI.Topocomm

class mpi4py.MPI.Topocomm

Bases: Intracomm

Topology intracommunicator.

static __new__(cls, comm=None)

Parameters:

comm (Topocomm | None) –

Return type:

Self

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 General.
Neighbor_allgather(sendbuf, recvbuf)	Neighbor Gather to All.
Neighbor_allgather_init(sendbuf, recvbuf[, info])	Persistent Neighbor Gather to All.
Neighbor_allgatherv(sendbuf, recvbuf)	Neighbor Gather to All Vector.
Neighbor_allgatherv_init(sendbuf, recvbuf[, ...])	Persistent Neighbor Gather to All Vector.
Neighbor_alltoall(sendbuf, recvbuf)	Neighbor All to All.
Neighbor_alltoall_init(sendbuf, recvbuf[, info])	Persistent Neighbor All to All.
Neighbor_alltoallv(sendbuf, recvbuf)	Neighbor All to All Vector.
Neighbor_alltoallv_init(sendbuf, recvbuf[, info])	Persistent Neighbor All to All Vector.
Neighbor_alltoallw(sendbuf, recvbuf)	Neighbor All to All General.
Neighbor_alltoallw_init(sendbuf, recvbuf[, info])	Persistent Neighbor All to All General.
neighbor_allgather(sendobj)	Neighbor Gather to All.
neighbor_alltoall(sendobj)	Neighbor All to All.

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 General.

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_allgather_init(sendbuf, recvbuf, info=INFO_NULL)

Persistent Neighbor Gather to All.

Parameters:

• sendbuf (BufSpec) –

• recvbuf (BufSpecB) –

• info (Info) –

Return type:

Prequest

Neighbor_allgatherv(sendbuf, recvbuf)

Neighbor Gather to All Vector.

Parameters:

• sendbuf (BufSpec) –

• recvbuf (BufSpecV) –

Return type:

None

Neighbor_allgatherv_init(sendbuf, recvbuf, info=INFO_NULL)

Persistent Neighbor Gather to All Vector.

Parameters:

• sendbuf (BufSpec) –

• recvbuf (BufSpecV) –

• info (Info) –

Return type:

Prequest

Neighbor_alltoall(sendbuf, recvbuf)

Neighbor All to All.

Parameters:

• sendbuf (BufSpecB) –

• recvbuf (BufSpecB) –

Return type:

None

Neighbor_alltoall_init(sendbuf, recvbuf, info=INFO_NULL)

Persistent Neighbor All to All.

Parameters:

• sendbuf (BufSpecB) –

• recvbuf (BufSpecB) –

• info (Info) –

Return type:

Prequest

Neighbor_alltoallv(sendbuf, recvbuf)

Neighbor All to All Vector.

Parameters:

• sendbuf (BufSpecV) –

• recvbuf (BufSpecV) –

Return type:

None

Neighbor_alltoallv_init(sendbuf, recvbuf, info=INFO_NULL)

Persistent Neighbor All to All Vector.

Parameters:

• sendbuf (BufSpecV) –

• recvbuf (BufSpecV) –

• info (Info) –

Return type:

Prequest

Neighbor_alltoallw(sendbuf, recvbuf)

Neighbor All to All General.

Parameters:

• sendbuf (BufSpecW) –

• recvbuf (BufSpecW) –

Return type:

None

Neighbor_alltoallw_init(sendbuf, recvbuf, info=INFO_NULL)

Persistent Neighbor All to All General.

Parameters:

• sendbuf (BufSpecW) –

• recvbuf (BufSpecW) –

• info (Info) –

Return type:

Prequest

neighbor_allgather(sendobj)

Neighbor Gather to All.

Parameters:

sendobj (Any) –

Return type:

list[Any]

neighbor_alltoall(sendobj)

Neighbor All to All.

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.