parallel_comm.h

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#ifndef PARALLEL_COMM_H
#define PARALLEL_COMM_H
 
#ifdef __MPI
#include "mpi.h"
extern MPI_Comm POOL_WORLD;
extern MPI_Comm KP_WORLD; // communicator among different pools
extern MPI_Comm INT_BGROUP;
extern MPI_Comm BP_WORLD;
extern MPI_Comm GRID_WORLD; // mohan add 2012-01-13
extern MPI_Comm DIAG_WORLD; // mohan add 2012-01-13
 
 
class MPICommGroup
{
 
    public:
 
        MPICommGroup(MPI_Comm parent_comm);
        ~MPICommGroup();
 
        void divide_group_comm(const int& ngroup, const bool assert_even = true);
 
        bool is_even = false; 
 
        MPI_Comm parent_comm = MPI_COMM_NULL; 
        int gsize = 0;                        
        int grank = 0;                        
 
        MPI_Comm group_comm = MPI_COMM_NULL; 
        int ngroups = 0;                     
        int nprocs_in_group = 0;             
        int my_group = 0;                    
        int rank_in_group = 0;               
 
        MPI_Comm inter_comm = MPI_COMM_NULL; 
        bool has_inter_comm = false;         
        int& nprocs_in_inter = ngroups;      
        int& my_inter = rank_in_group;  
        int& rank_in_inter = my_group;  
};
 
#endif
 
#endif // PARALLEL_COMM_H