Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType > Class Template Reference

#include <deal.II/base/mpi_consensus_algorithms.h>

Inheritance diagram for Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >:

Public Member Functions
	Selector ()=default
virtual	~Selector ()=default
virtual std::vector< unsigned int >	run (const std::vector< unsigned int > &targets, const std::function< RequestType(const unsigned int)> &create_request, const std::function< AnswerType(const unsigned int, const RequestType &)> &answer_request, const std::function< void(const unsigned int, const AnswerType &)> &process_answer, const MPI_Comm comm) override
std::vector< unsigned int >	run (Process< RequestType, AnswerType > &process, const MPI_Comm comm)

Private Attributes
std::shared_ptr< Interface< RequestType, AnswerType > >	consensus_algo

Detailed Description

template<typename RequestType, typename AnswerType>
class Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >

A class which delegates its task to other ConsensusAlgorithms::Interface implementations depending on the number of processes in the MPI communicator. For a small number of processes it uses PEX and for a large number of processes NBX. The threshold depends if the program is compiled in debug or release mode, but the goal is to always use the most efficient algorithm for however many processes participate in the communication.

Template Parameters

RequestType	The type of the elements of the vector to be sent.
AnswerType	The type of the elements of the vector to be received.

Definition at line 898 of file mpi_consensus_algorithms.h.

Constructor & Destructor Documentation

Selector()

template<typename RequestType , typename AnswerType >

Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >::Selector ( )

default

Default constructor.

~Selector()

template<typename RequestType , typename AnswerType >

virtual Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >::~Selector ( )

virtualdefault

Destructor.

Member Function Documentation

run() [1/2]

template<typename RequestType , typename AnswerType >

virtual std::vector< unsigned int > Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >::run ( const std::vector< unsigned int > & targets, const std::function< RequestType(const unsigned int)> & create_request, const std::function< AnswerType(const unsigned int, const RequestType &)> & answer_request, const std::function< void(const unsigned int, const AnswerType &)> & process_answer, const MPI_Comm comm )

overridevirtual

Run the consensus algorithm and return a vector of process ranks that have requested answers from the current process.

This version of the run() function simply unpacks the functions packaged in process and calls the version of the run() function that takes a number of std::function arguments.

Note

The function call is delegated to another ConsensusAlgorithms::Interface implementation.

Implements Utilities::MPI::ConsensusAlgorithms::Interface< RequestType, AnswerType >.

run() [2/2]

template<typename RequestType , typename AnswerType >

std::vector< unsigned int > Utilities::MPI::ConsensusAlgorithms::Interface< RequestType, AnswerType >::run ( Process< RequestType, AnswerType > & process, const MPI_Comm comm )

inherited

Run the consensus algorithm and return a vector of process ranks that have requested answers from the current process.

This version of the run() function simply unpacks the functions packaged in process and calls the version of the run() function that takes a number of std::function arguments.

Member Data Documentation

consensus_algo

template<typename RequestType , typename AnswerType >

std::shared_ptr<Interface<RequestType, AnswerType> > Utilities::MPI::ConsensusAlgorithms::Selector< RequestType, AnswerType >::consensus_algo

private

Definition at line 931 of file mpi_consensus_algorithms.h.

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The documentation for this class was generated from the following file:

• include/deal.II/base/mpi_consensus_algorithms.h