distribution.cpp File Reference

A rank's share of a distributed mesh. More...

#include "distribution.h"
#include <stdexcept>
#include <string>
#include <unordered_map>
#include "comm.h"

Functions
void	plan_halo_exchange (Distribution &dist, const std::vector< int > &halo_owner)
	Fill the exchange plan of dist, whose cells are numbered, from the owner of each of its halo cells (collective): each rank asks the owners for its halo cells, and the requests it receives become its send lists.
void	trim_halo_exchange (Distribution &dist, const std::vector< uint8_t > &needed)
	Keep in the exchange plan only the halo cells marked in needed (local cells); each neighbor stops sending the others. Collective.

Detailed Description

A rank's share of a distributed mesh.

Author

Matthew Bonanni (mbona.nosp@m.nni0.nosp@m.01@gm.nosp@m.ail..nosp@m.com)

Version

0.3

Date

2026-10-02

Copyright

Copyright (c) 2026 Matthew Bonanni

Function Documentation

plan_halo_exchange()

void plan_halo_exchange	(	Distribution &	dist,
		const std::vector< int > &	halo_owner
	)

Fill the exchange plan of dist, whose cells are numbered, from the owner of each of its halo cells (collective): each rank asks the owners for its halo cells, and the requests it receives become its send lists.

trim_halo_exchange()

void trim_halo_exchange	(	Distribution &	dist,
		const std::vector< uint8_t > &	needed
	)

Keep in the exchange plan only the halo cells marked in needed (local cells); each neighbor stops sending the others. Collective.