5#ifndef GKO_PUBLIC_CORE_DISTRIBUTED_NEIGHBORHOOD_COMMUNICATOR_HPP_
6#define GKO_PUBLIC_CORE_DISTRIBUTED_NEIGHBORHOOD_COMMUNICATOR_HPP_
9#include <ginkgo/config.hpp>
15#include <ginkgo/core/base/mpi.hpp>
16#include <ginkgo/core/distributed/collective_communicator.hpp>
17#include <ginkgo/core/distributed/index_map.hpp>
21namespace experimental {
33class NeighborhoodCommunicator final :
public CollectiveCommunicator {
37 NeighborhoodCommunicator(
const NeighborhoodCommunicator& other) =
default;
39 NeighborhoodCommunicator(NeighborhoodCommunicator&& other);
41 NeighborhoodCommunicator& operator=(
const NeighborhoodCommunicator& other) =
44 NeighborhoodCommunicator& operator=(NeighborhoodCommunicator&& other);
66 template <
typename LocalIndexType,
typename GlobalIndexType>
96 friend bool operator==(
const NeighborhoodCommunicator& a,
97 const NeighborhoodCommunicator& b);
105 const NeighborhoodCommunicator& b);
114 request i_all_to_all_v_impl(std::shared_ptr<const Executor> exec,
115 const void* send_buffer, MPI_Datatype send_type,
117 MPI_Datatype recv_type)
const override;
122 std::vector<comm_index_type> send_sizes_;
123 std::vector<comm_index_type> send_offsets_;
124 std::vector<comm_index_type> recv_sizes_;
125 std::vector<comm_index_type> recv_offsets_;
This class defines mappings between global and local indices.
Definition index_map.hpp:68
std::variant< const distributed::index_map< int32, int32 > *, const distributed::index_map< int32, int64 > *, const distributed::index_map< int64, int64 > * > index_map_ptr
All allowed index_map types (as const *)
Definition collective_communicator.hpp:36
request i_all_to_all_v(std::shared_ptr< const Executor > exec, const SendType *send_buffer, RecvType *recv_buffer) const
Non-blocking all-to-all communication.
Definition collective_communicator.hpp:126
std::unique_ptr< CollectiveCommunicator > create_inverse() const override
Creates the inverse NeighborhoodCommunicator by switching sources and destinations.
friend bool operator!=(const NeighborhoodCommunicator &a, const NeighborhoodCommunicator &b)
Compares two communicators for inequality.
friend bool operator==(const NeighborhoodCommunicator &a, const NeighborhoodCommunicator &b)
Compares two communicators for equality locally.
comm_index_type get_recv_size() const override
Get the number of elements received by this process within this communication pattern.
std::unique_ptr< CollectiveCommunicator > create_with_same_type(communicator base, index_map_ptr imap) const override
Creates a new CollectiveCommunicator with the same dynamic type.
NeighborhoodCommunicator(communicator base)
Default constructor with empty communication pattern.
comm_index_type get_send_size() const override
Get the number of elements sent by this process within this communication pattern.
NeighborhoodCommunicator(communicator base, const distributed::index_map< LocalIndexType, GlobalIndexType > &imap)
Create a NeighborhoodCommunicator from an index map.
A thin wrapper of MPI_Comm that supports most MPI calls.
Definition mpi.hpp:419
The request class is a light, move-only wrapper around the MPI_Request handle.
Definition mpi.hpp:331
The mpi namespace, contains wrapper for many MPI functions.
Definition mpi.hpp:36
int comm_index_type
Index type for enumerating processes in a distributed application.
Definition types.hpp:1060
The Ginkgo namespace.
Definition abstract_factory.hpp:20