#include "xt/xt_core.h"

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Data Structures
struct	Xt_com_list

Functions
Xt_xmap	xt_xmap_intersection_new (int num_src_intersections, const struct Xt_com_list src_com[num_src_intersections], int num_dst_intersections, const struct Xt_com_list dst_com[num_dst_intersections], Xt_idxlist src_idxlist, Xt_idxlist dst_idxlist, MPI_Comm comm)

Xt_xmap	xt_xmap_intersection_ext_new (int num_src_intersections, const struct Xt_com_list src_com[num_src_intersections], int num_dst_intersections, const struct Xt_com_list dst_com[num_dst_intersections], Xt_idxlist src_idxlist, Xt_idxlist dst_idxlist, MPI_Comm comm)

Detailed Description

Copyright: Copyright (C) 2016 Jörg Behrens behre.nosp@m.ns@d.nosp@m.krz.d.nosp@m.e Moritz Hanke hanke.nosp@m.@dkr.nosp@m.z.de Thomas Jahns jahns.nosp@m.@dkr.nosp@m.z.de

Author: Jörg Behrens behre.nosp@m.ns@d.nosp@m.krz.d.nosp@m.e Moritz Hanke hanke.nosp@m.@dkr.nosp@m.z.de Thomas Jahns jahns.nosp@m.@dkr.nosp@m.z.de

Definition in file xt_xmap_intersection.h.

Function Documentation

◆ xt_xmap_intersection_ext_new()

Xt_xmap xt_xmap_intersection_ext_new	(	int	num_src_intersections,
		const struct Xt_com_list	src_com[num_src_intersections],
		int	num_dst_intersections,
		const struct Xt_com_list	dst_com[num_dst_intersections],
		Xt_idxlist	src_idxlist,
		Xt_idxlist	dst_idxlist,
		MPI_Comm	comm
	)

constructor for an exchange map
This operation is collective over all processes in comm
it uses the provided intersection information to generate the exchange map. Internally this function uses ranges to represent index list positions and is therefore conserving space for somewhat contiguous index lists. Depending on the size and shape of intersections this can impact performance drastically..

Parameters

[in]	num_src_intersections	number of source intersections
[in]	src_com	array containing the source intersections with the other processes and their rank
[in]	num_dst_intersections	number of destination intersections
[in]	dst_com	array containing the destination intersections with the other processes and their rank
[in]	src_idxlist	source index list
[in]	dst_idxlist	destination index list
[in]	comm	MPI communicator that contains all processes that part in the exchange

Examples:: test_xmap_intersection_parallel.c.

Definition at line 260 of file xt_xmap_intersection_ext.c.

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◆ xt_xmap_intersection_new()

Xt_xmap xt_xmap_intersection_new	(	int	num_src_intersections,
		const struct Xt_com_list	src_com[num_src_intersections],
		int	num_dst_intersections,
		const struct Xt_com_list	dst_com[num_dst_intersections],
		Xt_idxlist	src_idxlist,
		Xt_idxlist	dst_idxlist,
		MPI_Comm	comm
	)

constructor for an exchange map
this operation is collective over all processes in comm
it uses the provided intersection information to generate the exchange map