SF::commgraph< T > Class Template Reference

The class holds the communication graph for a MPI_Exchange() call. More...

#include <SF_container.h>

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Public Member Functions
void	resize (size_t size)
	Resize all vectors to size. More...
template<class V >
void	scale (V fac)
	scale comm graph layout data More...
void	transpose ()
	transpose comm graph (receive becomes send, and vice versa) More...
template<class V >
void	configure (const vector< V > &dest, MPI_Comm comm)
	Set up the communication graph. More...
template<class V >
void	configure (const vector< V > &dest, const vector< T > &cnt, MPI_Comm comm)
	Set up the communication graph. More...
template<class V >
void	source_ranks (vector< V > &source)
	For every received data element, get the rank indices it was receive from. More...

Public Attributes
vector< T >	scnt
	Number of elements sent to each rank. More...
vector< T >	sdsp
	Displacements w.r.t. scnt. More...
vector< T >	rcnt
	Number of elements received from each rank. More...
vector< T >	rdsp
	Displacements w.r.t. rcnt. More...

Detailed Description

template<class T>
class SF::commgraph< T >

The class holds the communication graph for a MPI_Exchange() call.

Definition at line 625 of file SF_container.h.

Member Function Documentation

configure() [1/2]

template<class T >

template<class V >

void SF::commgraph< T >::configure ( const vector< V > &  dest, const vector< T > &  cnt, MPI_Comm  comm  )

inline

Set up the communication graph.

Parameters

[in]	dest	The destination of each logical element to communicate.
[in]	cnt	The number of entries of each logical element.
[in]	comm	The MPI_Comm used for the communcation.

Postcondition

All vectors in the class have been configured.

Definition at line 689 of file SF_container.h.

configure() [2/2]

template<class T >

template<class V >

void SF::commgraph< T >::configure ( const vector< V > &  dest, MPI_Comm  comm  )

inline

Set up the communication graph.

Parameters

[in]	dest	The destination of each local element to communicate.
[in]	comm	The MPI_Comm used for the communcation.

Postcondition

All vectors in the class have been configured.

Definition at line 667 of file SF_container.h.

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resize()

template<class T >

void SF::commgraph< T >::resize ( size_t  size )

inline

Resize all vectors to size.

Definition at line 634 of file SF_container.h.

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scale()

template<class T >

template<class V >

void SF::commgraph< T >::scale ( V  fac )

inline

scale comm graph layout data

Definition at line 641 of file SF_container.h.

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source_ranks()

template<class T >

template<class V >

void SF::commgraph< T >::source_ranks ( vector< V > &  source )

inline

For every received data element, get the rank indices it was receive from.

Note: The commgraph class needs to be configured in order for this function to produce a meaningful result.

Parameters

[out]

source

A vector holding the source rank index to every element of data received.

Definition at line 714 of file SF_container.h.

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transpose()

template<class T >

void SF::commgraph< T >::transpose ( )

inline

transpose comm graph (receive becomes send, and vice versa)

Definition at line 651 of file SF_container.h.

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Member Data Documentation

rcnt

template<class T >

vector<T> SF::commgraph< T >::rcnt

Number of elements received from each rank.

Definition at line 630 of file SF_container.h.

rdsp

template<class T >

vector<T> SF::commgraph< T >::rdsp

Displacements w.r.t. rcnt.

Definition at line 631 of file SF_container.h.

scnt

template<class T >

vector<T> SF::commgraph< T >::scnt

Number of elements sent to each rank.

Definition at line 628 of file SF_container.h.

sdsp

template<class T >

vector<T> SF::commgraph< T >::sdsp

Displacements w.r.t. scnt.

Definition at line 629 of file SF_container.h.

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

• fem/slimfem/src/SF_container.h