Moving per-item values from their owner ranks to contiguous blocks in global-id order, for writes at global offsets. More...

#include <cstdint>
#include <span>
#include <utility>
#include <vector>

Classes
class	GlobalOrder
	Items (cells, nodes) spread over the ranks, each with a global id in [0, n_global), regrouped so that rank r holds the ids [block_begin(n_global, r, p), block_begin(n_global, r + 1, p)) in order. An id may come from several ranks (shared nodes); it then takes any one of their values, so they should agree. Ids no rank sends are left zero. Without distributed, this rank holds every id and the regrouping is a local permutation (not collective). More...

Detailed Description

Moving per-item values from their owner ranks to contiguous blocks in global-id order, for writes at global offsets.

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

Classes