distributor

NAME

distributor - memory distribution table (rheolef-7.2)

DESCRIPTION

Given an array size, this class decides which process will own which part of a distributed memory array such as disarray(4).

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;

};

AUTHOR

Pierre Saramito <[email protected]>

COPYRIGHT

Copyright (C) 2000-2018 Pierre Saramito <[email protected]> GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.