MPI_CoreToCoreBMessage< T > Class Template Reference

This class is a class to send / receive buffered messages from one to core to one core. More...

#include <MPI_CoreToCoreBMessage.h>

Inheritance diagram for MPI_CoreToCoreBMessage< T >:

Collaboration diagram for MPI_CoreToCoreBMessage< T >:

Public Member Functions
	MPI_CoreToCoreBMessage (const tInteger &nElements, const tInteger &nMessage)
	create a buffer message with nMessages which each message is compozed by maximum of nElements of T
virtual	~MPI_CoreToCoreBMessage (void)
	destroy
virtual tMemSize	getMemorySize () const override
	return the memory size of the class
void	send (const MPI_Environment &env, const tMPICoreId &dstCore, const T &data, const tMPITag &flag) const
	buffred sent of a data with flag to dstCore More...
void	allocateBuffer (const tInteger &nElements, const tInteger &nMessages)
	allocate the buffer More...
void	desallocateBuffer ()
	desallocate the buffer
Public Member Functions inherited from CORE_Object
template<class T >
std::shared_ptr< T >	getSharedPointer ()
	return the shared pointer for this More...
template<class T >
std::shared_ptr< const T >	getConstSharedPointer () const
	return a const shared pointer for this More...
virtual tMemSize	getContentsMemorySize () const
	return nthe memory size of the included associations More...
template<class T >
tBoolean	isInstanceOf () const
	test if the clas T is an instance of this class More...
tString	getClassName () const
	return the name of the class More...
tString	getPointerString () const
	retrun the pointer of the class as a string More...
tString	getIdentityString () const
	retrun the string identification of the class More...
virtual tString	toString () const
	return the string representation of the object node More...

Static Public Member Functions
static CORE_UniquePointer< MPI_CoreToCoreBMessage< T > >	New ()
	create an unique instance of the class This More...
Static Public Member Functions inherited from CORE_Object
static tBoolean	EnableMemoryStack (const tBoolean &isMemoryChecked)
	enable the memory stack More...
static void	EnableMemoryStack ()
	enable the memory stack
static void	DisableMemoryStack ()
	disable the memory stack
static tBoolean	IsMemoryStackEnabled ()
	return trur if the memory stack is enabled
static tString	MemoryStackToString ()
	get the memory stack in string More...
static tIndex	GetRegisteredClassesNumber ()
	get the memory stack in string More...

Additional Inherited Members
Protected Member Functions inherited from MPI_Object
	MPI_Object (void)
	create
virtual	~MPI_Object (void)
	destroy
Protected Member Functions inherited from CORE_Object
	CORE_Object ()
	build an instance of the object
virtual	~CORE_Object ()
	destroy the instance of object std

Detailed Description

template<typename T>
class MPI_CoreToCoreBMessage< T >

This class is a class to send / receive buffered messages from one to core to one core.

Template Parameters

T	: type of messages to exchange

• the communication time lapse is as follow: \imag html buffertimelapse.jpg
• advantages:
  • No wait that the destination core receive the message
  • no block

• disadvanetage:

  • more momory used
  • manually management of buffers
  • lower speed with the distination core is ready to reeceive the message
  • no known with the receive is done

  Author

  Stephane Despreaux

  Version

  2.0

Member Function Documentation

allocateBuffer()

template<typename T >

void MPI_CoreToCoreBMessage< T >::allocateBuffer ( const tInteger &  nElements, const tInteger &  nMessages  )

inline

allocate the buffer

Parameters

[in]	nElements	: elements number per message to allocate
[in]	nMessages	: messages number to allocate

New()

template<typename T >

static CORE_UniquePointer<MPI_CoreToCoreBMessage<T> > MPI_CoreToCoreBMessage< T >::New ( )

inlinestatic

create an unique instance of the class This

Returns

a new unique instance of the class This

send()

template<typename T >

void MPI_CoreToCoreBMessage< T >::send ( const MPI_Environment &  env, const tMPICoreId &  dstCore, const T &  data, const tMPITag &  flag  ) const

inline

buffred sent of a data with flag to dstCore

Parameters

[in]	env	environment of the destination Core
[in]	dstCore	id of the destination core
[in]	data	data to send
[in]	flag	flag of the data

No bufferizing & no copy by need that the destination core is ready to receive the message

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

• /home/despreau/Developpement/CPP/devcpp20/include/mpi/multicores/MPI_CoreToCoreBMessage.h