MpiContainer.cc File Reference

#include "MpiContainer.h"
#include "Logger.h"
#include "SpeciesHandler.h"
#include "GeneralDefine.h"

Functions
void	initialiseMPI ()
	Inialises the MPI library. More...

Function Documentation

initialiseMPI()

void initialiseMPI

(

)

Inialises the MPI library.

{
#ifdef MERCURYDPM_USE_MPI
    //Check if MPI is already initialised
    int Mpi_init_flag = 0;
    MPI_Initialized(&Mpi_init_flag);
    if(!Mpi_init_flag)
    {
        MPI_Init(NULL,NULL);
        MPIContainer& communicator = MPIContainer::Instance();
        if (PROCESSOR_ID  == 0)
        {
            std::cout << "MPI has been initialised" << std::endl;
        }
 
        //MPI should be finalised at the end of any program.
        std::atexit([]()
        {
            MPIContainer& communicator = MPIContainer::Instance();
            communicator.deleteMercuryMPITypes();
            MPI_Finalize();
            if (PROCESSOR_ID == 0)
            {
                std::cout << "MPI has been finalised" << std::endl;
            }
        });
    }
#endif
}

References MPIContainer::deleteMercuryMPITypes(), MPIContainer::Instance(), and PROCESSOR_ID.

Referenced by DPMBase::constructor(), printError(), printFatalError(), printInfo(), and printWarn().