lunchbox::MPI Class Reference

MPI functionality wrapper. More...

#include <mpi.h>

Collaboration diagram for lunchbox::MPI:

Public Member Functions
LUNCHBOX_API	MPI (int argc, char **argv)
	Construct an MPI handler with command line arguments. More...
LUNCHBOX_API	MPI ()
	Construct a new MPI handler. More...
LUNCHBOX_API	~MPI ()
	Destruct this handler instance. More...
LUNCHBOX_API bool	supportsThreads () const
LUNCHBOX_API int	getRank () const
LUNCHBOX_API int	getSize () const

Detailed Description

MPI functionality wrapper.

Definition at line 30 of file mpi.h.

Constructor & Destructor Documentation

LUNCHBOX_API lunchbox::MPI::MPI	(	int	argc,
		char **	argv
	)

Construct an MPI handler with command line arguments.

Calls MPI_Init_thread requesting MPI_THREAD_MULTIPLE, unless MPI is already initialized. Will initialize the thread support to false depending on the obtained thread support. Will signal not to support threads if MPI was initialized externally.

NOTE: Be aware that MPI_THREAD_MULTIPLE is only lightly tested and likely still has some bugs. Please, refer the below links: https://www.open-mpi.org/faq/?category=supported-systems#thread-support https://www.open-mpi.org/doc/v1.4/man3/MPI_Init_thread.3.php

Version

1.1.1

LUNCHBOX_API lunchbox::MPI::MPI

(

)

Construct a new MPI handler.

See argc, argv ctor for details.

Version

1.1.1

LUNCHBOX_API lunchbox::MPI::~MPI

(

)

Destruct this handler instance.

Calls MPI_Finalize if it is the last copy of an instance which has initialized MPI.

Version

1.1.1

Member Function Documentation

LUNCHBOX_API int lunchbox::MPI::getRank

(

)

const

Returns

the rank of the process that calls it

Version

1.1.1

LUNCHBOX_API int lunchbox::MPI::getSize

(

)

const

Returns

the number of processes involved

Version

1.1.1

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

• mpi.h