typedef enum { REQUEST, VALUE, GOAWAY } nxtval_msgtype; 
int MPE_Counter_create_ic( MPI_Comm, MPI_Comm *,MPI_Comm * ); 
int MPE_Counter_free_ic( MPI_Comm *, MPI_Comm * ); 
int MPE_Counter_nxtval_ic( MPI_Comm, int * ); 
#define SERVER_RANK 0