MPI tools

Data Structures
struct	pMPI::MPIWorker
	Abstraction of an MPI worker process. More...
struct	pMPI::MPIMaster
	Abstraction of an MPI master process. More...
struct	pMPI::ComputeWrap< PartType >
	Wrapper around a computable object that calls the compute() method of the wrapped object and carries information about the complexity of a call to that method. More...
struct	pMPI::PrepareWrap< PartType >
	Wrapper around a computable object that calls the prepare() method of the wrapped object and carries information about the complexity of a call to that method. More...
struct	pMPI::mpi_skel< WrapType >
	This structure carries a list of wrappers and uses the mpi_dispatcher mechanism to distribute the wrappers over MPI ranks and to call run() for all of them in parallel. More...

Typedefs
using	pMPI::JobId = int
	ID of a job. More...
using	pMPI::WorkerId = int
	ID of a worker process. More...

Enumerations
enum	pMPI::WorkerTag : int { pMPI::Pending, pMPI::Work, pMPI::Finish }
	MPI message tags used in communications between the master and its workers. More...

Functions
int	pMPI::size (MPI_Comm const &Comm)
int	pMPI::rank (MPI_Comm const &Comm)
std::map< pMPI::JobId, pMPI::WorkerId >	pMPI::mpi_skel< WrapType >::run (MPI_Comm const &Comm, bool VerboseOutput=true)

Detailed Description

Typedef Documentation

JobId

using pMPI::JobId = typedef int

ID of a job.

Definition at line 39 of file mpi_dispatcher.hpp.

WorkerId

using pMPI::WorkerId = typedef int

ID of a worker process.

Definition at line 41 of file mpi_dispatcher.hpp.

Enumeration Type Documentation

WorkerTag

enum pMPI::WorkerTag : int

MPI message tags used in communications between the master and its workers.

Enumerator
Pending	A worker is waiting for a new job.
Work	Request a worker to do a job.
Finish	Order a worker to shut down.

Definition at line 32 of file mpi_dispatcher.hpp.

Function Documentation

rank()

int pMPI::rank ( MPI_Comm const &  Comm )

inline

Return the rank of the calling process in a given MPI communicator.

Parameters

[in]

Comm

MPI communicator.

Definition at line 36 of file misc.hpp.

run()

template<typename WrapType >

std::map< pMPI::JobId, pMPI::WorkerId > pMPI::mpi_skel< WrapType >::run	(	MPI_Comm const &	Comm,
		bool	VerboseOutput = true
	)

Distribute the stored wrappers over MPI ranks according to their complexity and call run() for each of the wrappers.

Parameters

[in]	Comm	MPI communicator.
[in]	VerboseOutput	Print extra information about the parallelization process.

Returns

A mapping from job IDs to worker IDs assigned to perform the jobs.

Definition at line 85 of file mpi_skel.hpp.

size()

int pMPI::size ( MPI_Comm const &  Comm )

inline

Return size of an MPI communicator.

Parameters

[in]

Comm

MPI communicator.

Definition at line 28 of file misc.hpp.