dune-common  2.2.0
Public Types | Public Member Functions | Static Public Member Functions
Dune::MPIHelper Class Reference

A real mpi helper.This helper should be used for parallel programs. More...

#include <dune/common/mpihelper.hh>

List of all members.

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
static MPICommunicator getLocalCommunicator ()
 get a local communicator
static CollectiveCommunication
< MPICommunicator
getCollectiveCommunication ()
static MPIHelperinstance (int &argc, char **&argv)
 Get the singleton instance of the helper.

Detailed Description

A real mpi helper.

This helper should be used for parallel programs.


Member Typedef Documentation

The type of the mpi communicator.


Member Enumeration Documentation

anonymous enum
Enumerator:
isFake 

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


Member Function Documentation

References getCommunicator().

get the default communicator

Return a communicator to exchange data with all processes

Returns:
MPI_COMM_WORLD

Referenced by getCollectiveCommunication().

get a local communicator

Returns a communicator to exchange data with the local process only

Returns:
MPI_COMM_SELF
static MPIHelper& Dune::MPIHelper::instance ( int &  argc,
char **&  argv 
) [inline, static]

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:
argcThe number of arguments provided to main.
argvThe arguments provided to main.
int Dune::MPIHelper::rank ( ) const [inline]

return rank of process

int Dune::MPIHelper::size ( ) const [inline]

return number of processes


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