Dune::MPIHelper Class Reference

A real mpi helper. More...

#include <dune/common/parallel/mpihelper.hh>

Public Types
enum	{ isFake = false }
typedef MPI_Comm	MPICommunicator
	The type of the mpi communicator.

Public Member Functions
int	rank () const
	return rank of process
int	size () const
	return number of processes

Static Public Member Functions
static MPICommunicator	getCommunicator ()
	get the default communicator More...
static MPICommunicator	getLocalCommunicator ()
	get a local communicator More...
static DUNE_EXPORT MPIHelper &	instance (int &argc, char **&argv)
	Get the singleton instance of the helper. More...

Detailed Description

A real mpi helper.

This helper should be used for parallel programs.

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
isFake	Are we fake (i. e. pretend to have MPI support but are compiled without.

Member Function Documentation

getCommunicator()

static MPICommunicator Dune::MPIHelper::getCommunicator ( )

inlinestatic

get the default communicator

Return a communicator to exchange data with all processes

Returns

MPI_COMM_WORLD

getLocalCommunicator()

static MPICommunicator Dune::MPIHelper::getLocalCommunicator ( )

inlinestatic

get a local communicator

Returns a communicator to exchange data with the local process only

Returns

MPI_COMM_SELF

instance()

static DUNE_EXPORT MPIHelper& Dune::MPIHelper::instance ( int &  argc, char **&  argv  )

inlinestatic

Get the singleton instance of the helper.

This method has to be called with the same arguments that the main method of the program was called:

int main(int argc, char** argv){
  MPIHelper::instance(argc, argv);
  // program code comes here
  ...
}

Parameters

argc	The number of arguments provided to main.
argv	The arguments provided to main.

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

• dune/common/parallel/mpihelper.hh