PLMD::Communicator Class Reference

Class containing wrappers to MPI. More...

#include <Communicator.h>

Inheritance diagram for PLMD::Communicator:

Classes
struct	ConstData
	Const version of Communicator::Data See Communicator::Data documentation. More...
struct	Data
	Structure defining a buffer for MPI. More...
class	Request
	Wrapper class for MPI_Request. More...
class	Status
	Wrapper class for MPI_Status. More...

Public Member Functions
	Communicator ()
	Default constructor. More...
	Communicator (const Communicator &)
	Copy constructor. More...
virtual	~Communicator ()
	Destructor. More...
void	Abort (int code)
	Wrapper to MPI_Abort. More...
void	Allgather (ConstData in, Data out)
	Wrapper for MPI_Allgather (data struct) More...
template<class T , class S >
void	Allgather (const T *sendbuf, int sendcount, S *recvbuf, int recvcount)
	Wrapper for MPI_Allgatherv (pointer) More...
template<class T , class S >
void	Allgather (const T &sendbuf, S &recvbuf)
	Wrapper for MPI_Allgatherv (reference) More...
void	Allgatherv (ConstData in, Data out, const int *, const int *)
	Wrapper for MPI_Allgatherv (data struct) More...
template<class T , class S >
void	Allgatherv (const T *sendbuf, int sendcount, S *recvbuf, const int *recvcounts, const int *displs)
	Wrapper for MPI_Allgatherv (pointer) More...
template<class T , class S >
void	Allgatherv (const T &sendbuf, S &recvbuf, const int *recvcounts, const int *displs)
	Wrapper for MPI_Allgatherv (reference) More...
void	Barrier () const
	Wrapper to MPI_Barrier. More...
void	Bcast (Data, int)
	Wrapper for MPI_Bcast (data struct) More...
template<class T >
void	Bcast (T *buf, int count, int root)
	Wrapper for MPI_Bcast (pointer) More...
template<class T >
void	Bcast (T &buf, int root)
	Wrapper for MPI_Bcast (reference) More...
MPI_Comm &	Get_comm ()
	Reference to MPI communicator. More...
int	Get_rank () const
	Obtain the rank of the present process. More...
int	Get_size () const
	Obtain the number of processes. More...
Request	Isend (ConstData, int, int)
	Wrapper for MPI_Isend (data struct) More...
template<class T >
Request	Isend (const T *buf, int count, int source, int tag)
	Wrapper for MPI_Isend (pointer) More...
template<class T >
Request	Isend (const T &buf, int source, int tag)
	Wrapper for MPI_Isend (reference) More...
void	Max (Data)
	Wrapper for MPI_Allreduce with MPI_MAX (data struct) More...
template<class T >
void	Max (T *buf, int count)
	Wrapper for MPI_Allreduce with MPI_MAX (pointer) More...
template<class T >
void	Max (T &buf)
	Wrapper for MPI_Allreduce with MPI_MAX (reference) More...
void	Min (Data)
	Wrapper for MPI_Allreduce with MPI_MIN (data struct) More...
template<class T >
void	Min (T *buf, int count)
	Wrapper for MPI_Allreduce with MPI_MIN (pointer) More...
template<class T >
void	Min (T &buf)
	Wrapper for MPI_Allreduce with MPI_MIN (reference) More...
Communicator &	operator= (const Communicator &)
	Assignment operator. More...
void	Prod (Data)
	Wrapper for MPI_Allreduce with MPI_PROD (data struct) More...
template<class T >
void	Prod (T *buf, int count)
	Wrapper for MPI_Allreduce with MPI_PROD (pointer) More...
template<class T >
void	Prod (T &buf)
	Wrapper for MPI_Allreduce with MPI_PROD (reference) More...
void	Recv (Data, int, int, Status &s=StatusIgnore)
	Wrapper for MPI_Recv (data struct) More...
template<class T >
void	Recv (T *buf, int count, int source, int tag, Status &s=StatusIgnore)
	Wrapper for MPI_Recv (pointer) More...
template<class T >
void	Recv (T &buf, int source, int tag, Status &s=StatusIgnore)
	Wrapper for MPI_Recv (reference) More...
void	Set_comm (MPI_Comm comm)
	Set from a real MPI communicator. More...
void	Set_comm (void *comm)
	Set from a pointer to a real MPI communicator (C). More...
void	Set_fcomm (void *comm)
	Set from a pointer to a real MPI communicator (FORTRAN). More...
void	Split (int, int, Communicator &) const
	Wrapper to MPI_Comm_split. More...
void	Sum (Data)
	Wrapper for MPI_Allreduce with MPI_SUM (data struct) More...
template<class T >
void	Sum (T *buf, int count)
	Wrapper for MPI_Allreduce with MPI_SUM (pointer) More...
template<class T >
void	Sum (T &buf)
	Wrapper for MPI_Allreduce with MPI_SUM (reference) More...

Static Public Member Functions
static bool	initialized ()
	Tests if MPI library is initialized. More...

Static Public Attributes
static Status	StatusIgnore
	Special status used when status should be ignored. More...

Private Member Functions
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()
template<>
MPI_Datatype	getMPIType ()

Static Private Member Functions
template<class T >
static MPI_Datatype	getMPIType ()
	Function returning the MPI type. More...

Private Attributes
MPI_Comm	communicator
	Communicator. More...

Detailed Description

Class containing wrappers to MPI.

All the MPI related stuff is relegated here.

Constructor & Destructor Documentation

Communicator() [1/2]

PLMD::Communicator::Communicator

(

)

Default constructor.

Communicator() [2/2]

PLMD::Communicator::Communicator

(

const Communicator &

pc

)

Copy constructor.

It effectively "clones" the communicator, providing a new one acting on the same group

~Communicator()

PLMD::Communicator::~Communicator ( )

virtual

Destructor.

Member Function Documentation

Abort()

void PLMD::Communicator::Abort

(

int

code

)

Wrapper to MPI_Abort.

Parameters

code	Error code

Allgather() [1/3]

void PLMD::Communicator::Allgather	(	ConstData	in,
		Data	out
	)

Wrapper for MPI_Allgather (data struct)

Allgather() [2/3]

template<class T , class S >

void PLMD::Communicator::Allgather ( const T *  sendbuf, int  sendcount, S *  recvbuf, int  recvcount  )

inline

Wrapper for MPI_Allgatherv (pointer)

Allgather() [3/3]

template<class T , class S >

void PLMD::Communicator::Allgather ( const T &  sendbuf, S &  recvbuf  )

inline

Wrapper for MPI_Allgatherv (reference)

Allgatherv() [1/3]

void PLMD::Communicator::Allgatherv	(	ConstData	in,
		Data	out,
		const int *	recvcounts,
		const int *	displs
	)

Wrapper for MPI_Allgatherv (data struct)

Allgatherv() [2/3]

template<class T , class S >

void PLMD::Communicator::Allgatherv ( const T *  sendbuf, int  sendcount, S *  recvbuf, const int *  recvcounts, const int *  displs  )

inline

Wrapper for MPI_Allgatherv (pointer)

Allgatherv() [3/3]

template<class T , class S >

void PLMD::Communicator::Allgatherv ( const T &  sendbuf, S &  recvbuf, const int *  recvcounts, const int *  displs  )

inline

Wrapper for MPI_Allgatherv (reference)

Barrier()

void PLMD::Communicator::Barrier

(

)

const

Wrapper to MPI_Barrier.

Bcast() [1/3]

void PLMD::Communicator::Bcast	(	Data	data,
		int	root
	)

Wrapper for MPI_Bcast (data struct)

Bcast() [2/3]

template<class T >

void PLMD::Communicator::Bcast ( T *  buf, int  count, int  root  )

inline

Wrapper for MPI_Bcast (pointer)

Bcast() [3/3]

template<class T >

void PLMD::Communicator::Bcast ( T &  buf, int  root  )

inline

Wrapper for MPI_Bcast (reference)

Get_comm()

MPI_Comm & PLMD::Communicator::Get_comm

(

)

Reference to MPI communicator.

Get_rank()

int PLMD::Communicator::Get_rank

(

)

const

Obtain the rank of the present process.

Get_size()

int PLMD::Communicator::Get_size

(

)

const

Obtain the number of processes.

getMPIType() [1/8]

template<class T >

static MPI_Datatype PLMD::Communicator::getMPIType ( )

staticprivate

Function returning the MPI type.

You can use it to access to the MPI type of a C++ type, e.g. MPI_Datatype type=getMPIType<double>();

getMPIType() [2/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [3/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [4/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [5/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [6/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [7/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

getMPIType() [8/8]

template<>

MPI_Datatype PLMD::Communicator::getMPIType ( )

private

initialized()

bool PLMD::Communicator::initialized ( )

static

Tests if MPI library is initialized.

Isend() [1/3]

Communicator::Request PLMD::Communicator::Isend	(	ConstData	data,
		int	source,
		int	tag
	)

Wrapper for MPI_Isend (data struct)

Isend() [2/3]

template<class T >

Request PLMD::Communicator::Isend ( const T *  buf, int  count, int  source, int  tag  )

inline

Wrapper for MPI_Isend (pointer)

Isend() [3/3]

template<class T >

Request PLMD::Communicator::Isend ( const T &  buf, int  source, int  tag  )

inline

Wrapper for MPI_Isend (reference)

Max() [1/3]

void PLMD::Communicator::Max

(

Data

data

)

Wrapper for MPI_Allreduce with MPI_MAX (data struct)

Max() [2/3]

template<class T >

void PLMD::Communicator::Max ( T *  buf, int  count  )

inline

Wrapper for MPI_Allreduce with MPI_MAX (pointer)

Max() [3/3]

template<class T >

void PLMD::Communicator::Max ( T &  buf )

inline

Wrapper for MPI_Allreduce with MPI_MAX (reference)

Min() [1/3]

void PLMD::Communicator::Min

(

Data

data

)

Wrapper for MPI_Allreduce with MPI_MIN (data struct)

Min() [2/3]

template<class T >

void PLMD::Communicator::Min ( T *  buf, int  count  )

inline

Wrapper for MPI_Allreduce with MPI_MIN (pointer)

Min() [3/3]

template<class T >

void PLMD::Communicator::Min ( T &  buf )

inline

Wrapper for MPI_Allreduce with MPI_MIN (reference)

operator=()

Communicator & PLMD::Communicator::operator=

(

const Communicator &

pc

)

Assignment operator.

It effectively "clones" the communicator, providing a new one acting on the same group

Prod() [1/3]

void PLMD::Communicator::Prod

(

Data

data

)

Wrapper for MPI_Allreduce with MPI_PROD (data struct)

Prod() [2/3]

template<class T >

void PLMD::Communicator::Prod ( T *  buf, int  count  )

inline

Wrapper for MPI_Allreduce with MPI_PROD (pointer)

Prod() [3/3]

template<class T >

void PLMD::Communicator::Prod ( T &  buf )

inline

Wrapper for MPI_Allreduce with MPI_PROD (reference)

Recv() [1/3]

void PLMD::Communicator::Recv	(	Data	data,
		int	source,
		int	tag,
		Status &	s = StatusIgnore
	)

Wrapper for MPI_Recv (data struct)

Recv() [2/3]

template<class T >

void PLMD::Communicator::Recv ( T *  buf, int  count, int  source, int  tag, Status &  s = StatusIgnore  )

inline

Wrapper for MPI_Recv (pointer)

Recv() [3/3]

template<class T >

void PLMD::Communicator::Recv ( T &  buf, int  source, int  tag, Status &  s = StatusIgnore  )

inline

Wrapper for MPI_Recv (reference)

Set_comm() [1/2]

void PLMD::Communicator::Set_comm

(

MPI_Comm

comm

)

Set from a real MPI communicator.

Parameters

comm	MPI communicator

Set_comm() [2/2]

void PLMD::Communicator::Set_comm

(

void *

comm

)

Set from a pointer to a real MPI communicator (C).

Parameters

comm	Pointer to a C MPI communicator

Set_fcomm()

void PLMD::Communicator::Set_fcomm

(

void *

comm

)

Set from a pointer to a real MPI communicator (FORTRAN).

Parameters

comm	Pointer to a FORTRAN MPI communicator (INTEGER)

Split()

void PLMD::Communicator::Split	(	int	color,
		int	key,
		Communicator &	pc
	)		const

Wrapper to MPI_Comm_split.

Sum() [1/3]

void PLMD::Communicator::Sum

(

Data

data

)

Wrapper for MPI_Allreduce with MPI_SUM (data struct)

Sum() [2/3]

template<class T >

void PLMD::Communicator::Sum ( T *  buf, int  count  )

inline

Wrapper for MPI_Allreduce with MPI_SUM (pointer)

Sum() [3/3]

template<class T >

void PLMD::Communicator::Sum ( T &  buf )

inline

Wrapper for MPI_Allreduce with MPI_SUM (reference)

Member Data Documentation

communicator

MPI_Comm PLMD::Communicator::communicator

private

Communicator.

StatusIgnore

Communicator::Status PLMD::Communicator::StatusIgnore

static

Special status used when status should be ignored.

E.g. Recv(a,0,1,Communicator::StatusIgnore); Notice that this is the default for Recv, so this is equivalent to Recv(a,0,1);

---

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

• tools/Communicator.h
• tools/Communicator.cpp