A process group is described by a collective object [?] with local components of class Group. The public interface of the Group class is
class Procs ;
class DimensionSet ;
class Coord ;
class Group {
public :
Group() ;
Group(const Procs& p) ;
const Procs* prc() const ;
DimensionSet dims() const ;
int member() const ;
int size() const ;
int id() const ;
int id_prc(const int id) const ;
int id_abs(const int id) const ;
int lead_prc() const ;
int lead_abs() const ;
void restrict(Dimension d, const int coord) ;
void restrict(Dimension d) ;
void restrict(DimensionSet ds) ;
inline Group operator/(const Coord& i) const ;
inline Group& operator/=(const Coord& i) ;
private :
...
} ;