distributor

memory distribution table

Description

Given an array size, this class decides which process will own which part of a distributed memory array such as disarray.

Example

    distributor ownership (100);

TODO

Ambiguous use of size() and dis_size(). Here size() refers to n_process(), while size(iproc) and dis_size() refer to the size of the index ranges. Then, size() should be avoided, and we should use n_process() instead.

Implementation

This documentation has been generated from file linalg/lib/distributor.h

class distributor : public Vector<std::allocator<int>::size_type> {
public:
 
// typedefs:
 
        typedef std::allocator<int>::size_type size_type;
        typedef Vector<size_type>              _base;
        typedef _base::iterator                iterator;
        typedef _base::const_iterator          const_iterator;
        typedef int                            tag_type;
        typedef communicator                   communicator_type;
 
// constants:
 
        static const size_type decide = size_type(-1);
 
// allocators/deallocators:
 
        distributor(
                size_type dis_size = 0,
                const communicator_type& c = communicator_type(),
                size_type loc_size = decide);
 
        distributor(const distributor&);
        ~distributor();
 
        void resize(
                size_type dis_size = 0,
                const communicator_type& c = communicator_type(),
                size_type loc_size = decide);
 
// accessors:
 
        const communicator_type& comm() const;

        size_type dis_size () const;

        size_type process () const;
        
        size_type n_process () const;

        size_type find_owner (size_type dis_i) const;

        size_type first_index (size_type iproc) const;
        size_type last_index (size_type iproc) const;
        size_type size (size_type iproc) const;

        size_type first_index () const;
        size_type last_index () const;
        size_type size () const;

        bool is_owned (size_type dis_i, size_type iproc) const;
 
        // the same with ip=current process
        bool is_owned (size_type dis_i) const;
 

        static tag_type get_new_tag();
 
// comparators:
 
        bool operator== (const distributor&) const;
        bool operator!= (const distributor&) const;

};