DistParmetis< Graph > Class Template Reference

Helper class to define Metis graph. More...

#include <parmetis_dist_util.hpp>

Public Member Functions
	DistParmetis (Vcluster<> &v_cl, size_t nc)
	Constructor. More...
	~DistParmetis ()
	destructor More...
void	initSubGraph (Graph &sub_g)
	Set the Sub-graph. More...
template<unsigned int i>
void	decompose (Graph &sub_g)
	Decompose the graph. More...
template<unsigned int i>
void	refine (Graph &sub_g)
	Refine the graph. More...
idx_t *	getPartition ()
	Get graph partition vector. More...
void	reset (Graph &sub_g)
	Reset graph and reconstruct it. More...

Private Member Functions
void	constructAdjList (Graph &sub_g)
	Construct Adjacency list. More...

Private Attributes
Parmetis_dist_graph	Mg
	Graph in parmetis reppresentation.
MPI_Comm	comm = (MPI_Comm)NULL
	Communticator for OpenMPI.
Vcluster &	v_cl
	VCluster.
int	p_id = 0
	Process rank information.
size_t	nc = 0
	nc Number of partition

Detailed Description

template<typename Graph>
class DistParmetis< Graph >

Helper class to define Metis graph.

TODO Transform pointer to openfpm vector

Template Parameters

graph

structure that store the graph

Definition at line 97 of file parmetis_dist_util.hpp.

Constructor & Destructor Documentation

DistParmetis()

template<typename Graph >

DistParmetis< Graph >::DistParmetis ( Vcluster<> &  v_cl, size_t  nc  )

inline

Constructor.

Construct a metis graph from a Graph_CSR

Parameters

v_cl	Vcluster
nc	number of partitions

Definition at line 181 of file parmetis_dist_util.hpp.

~DistParmetis()

template<typename Graph >

DistParmetis< Graph >::~DistParmetis ( )

inline

destructor

Destructor, It destroy all the memory allocated

Definition at line 213 of file parmetis_dist_util.hpp.

Member Function Documentation

constructAdjList()

template<typename Graph >

void DistParmetis< Graph >::constructAdjList ( Graph &  sub_g )

inlineprivate

Construct Adjacency list.

Parameters

sub_g

graph in which we construct the adjacency list

starting point in the adjacency list

Definition at line 119 of file parmetis_dist_util.hpp.

decompose()

template<typename Graph >

template<unsigned int i>

void DistParmetis< Graph >::decompose ( Graph &  sub_g )

inline

Decompose the graph.

Template Parameters

i	which property store the decomposition

Parameters

sub_g

graph to decompose

Definition at line 400 of file parmetis_dist_util.hpp.

getPartition()

template<typename Graph >

idx_t* DistParmetis< Graph >::getPartition ( )

inline

Get graph partition vector.

Returns

the partition or the assignment of each sub-sub-domain

Definition at line 446 of file parmetis_dist_util.hpp.

initSubGraph()

template<typename Graph >

void DistParmetis< Graph >::initSubGraph ( Graph &  sub_g )

inline

Set the Sub-graph.

Parameters

sub_g

Sub-graph to set

Set option for the graph partitioning (set as default)

adaptiveRepart itr value

init tpwgts to have balanced vertices and ubvec

This is used to indicate the numbering scheme that is used for the vtxdist, xadj, adjncy, and part arrays. (0 for C-style, start from 0 index)

This is used to indicate if the graph is weighted.

Definition at line 302 of file parmetis_dist_util.hpp.

refine()

template<typename Graph >

template<unsigned int i>

void DistParmetis< Graph >::refine ( Graph &  sub_g )

inline

Refine the graph.

Template Parameters

i	which property store the refined decomposition

Parameters

sub_g

graph to decompose

Definition at line 428 of file parmetis_dist_util.hpp.

reset()

template<typename Graph >

void DistParmetis< Graph >::reset ( Graph &  sub_g )

inline

Reset graph and reconstruct it.

Parameters

sub_g

graph to decompose

Definition at line 456 of file parmetis_dist_util.hpp.

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The documentation for this class was generated from the following file:

• openfpm_pdata/src/Decomposition/Distribution/parmetis_dist_util.hpp