vtkCommunicator Class Reference

#include <vtkCommunicator.h>

Inheritance diagram for vtkCommunicator:

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Collaboration diagram for vtkCommunicator:

[legend]

List of all members.

Detailed Description

Used to send/receive messages in a multiprocess environment.

This is an abstact class which contains functionality for sending and receiving inter-process messages. It contains methods for marshaling an object into a string (currently used by the MPI communicator but not the shared memory communicator).

Warning:: Communication between systems with different vtkIdTypes is not supported. All machines have to have the same vtkIdType.

See also:: vtkMPICommunicator

Tests:: vtkCommunicator (Tests)

Definition at line 49 of file vtkCommunicator.h.


Public Types
enum	Tags { BROADCAST_TAG = 10, GATHER_TAG = 11, GATHERV_TAG = 12, SCATTER_TAG = 13, SCATTERV_TAG = 14, REDUCE_TAG = 15, BARRIER_TAG = 16 }
enum	StandardOperations { MAX_OP, MIN_OP, SUM_OP, PRODUCT_OP, LOGICAL_AND_OP, BITWISE_AND_OP, LOGICAL_OR_OP, BITWISE_OR_OP, LOGICAL_XOR_OP, BITWISE_XOR_OP }
typedef vtkObject	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	Barrier ()

virtual void	SetNumberOfProcesses (int num)
virtual int	GetNumberOfProcesses ()

virtual int	GetLocalProcessId ()

int	Send (vtkDataObject *data, int remoteHandle, int tag)
int	Send (vtkDataArray *data, int remoteHandle, int tag)
virtual int	SendVoidArray (const void *data, vtkIdType length, int type, int remoteHandle, int tag)=0

int	Send (const int *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const unsigned int *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const unsigned long *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const unsigned char *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const char *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const float *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const double *data, vtkIdType length, int remoteHandle, int tag)
int	Send (const vtkMultiProcessStream &stream, int remoteId, int tag)
int	Receive (vtkDataObject *data, int remoteHandle, int tag)
vtkDataObject *	ReceiveDataObject (int remoteHandle, int tag)
int	Receive (vtkDataArray *data, int remoteHandle, int tag)
virtual int	ReceiveVoidArray (void *data, vtkIdType maxlength, int type, int remoteHandle, int tag)=0

int	Receive (int *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (unsigned int *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (unsigned long *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (unsigned char *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (char *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (float *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (double *data, vtkIdType maxlength, int remoteHandle, int tag)
int	Receive (vtkMultiProcessStream &stream, int remoteId, int tag)
virtual vtkIdType	GetCount ()

int	Broadcast (int *data, vtkIdType length, int srcProcessId)
int	Broadcast (unsigned long *data, vtkIdType length, int srcProcessId)
int	Broadcast (unsigned char *data, vtkIdType length, int srcProcessId)
int	Broadcast (char *data, vtkIdType length, int srcProcessId)
int	Broadcast (float *data, vtkIdType length, int srcProcessId)
int	Broadcast (double *data, vtkIdType length, int srcProcessId)
int	Broadcast (vtkDataObject *data, int srcProcessId)
int	Broadcast (vtkDataArray *data, int srcProcessId)
int	Broadcast (vtkMultiProcessStream &stream, int srcProcessId)
int	Gather (const int sendBuffer, int recvBuffer, vtkIdType length, int destProcessId)
int	Gather (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, int destProcessId)
int	Gather (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, int destProcessId)
int	Gather (const char sendBuffer, char recvBuffer, vtkIdType length, int destProcessId)
int	Gather (const float sendBuffer, float recvBuffer, vtkIdType length, int destProcessId)
int	Gather (const double sendBuffer, double recvBuffer, vtkIdType length, int destProcessId)
int	Gather (vtkDataArray sendBuffer, vtkDataArray recvBuffer, int destProcessId)
int	GatherV (const int sendBuffer, int recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	GatherV (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	GatherV (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	GatherV (const char sendBuffer, char recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	GatherV (const float sendBuffer, float recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	GatherV (const double sendBuffer, double recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int destProcessId)
int	Scatter (const int sendBuffer, int recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (const char sendBuffer, char recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (const float sendBuffer, float recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (const double sendBuffer, double recvBuffer, vtkIdType length, int srcProcessId)
int	Scatter (vtkDataArray sendBuffer, vtkDataArray recvBuffer, int srcProcessId)
int	ScatterV (const int sendBuffer, int recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	ScatterV (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	ScatterV (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	ScatterV (const char sendBuffer, char recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	ScatterV (const float sendBuffer, float recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	ScatterV (const double sendBuffer, double recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int srcProcessId)
int	AllGather (const int sendBuffer, int recvBuffer, vtkIdType length)
int	AllGather (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length)
int	AllGather (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length)
int	AllGather (const char sendBuffer, char recvBuffer, vtkIdType length)
int	AllGather (const float sendBuffer, float recvBuffer, vtkIdType length)
int	AllGather (const double sendBuffer, double recvBuffer, vtkIdType length)
int	AllGather (vtkDataArray sendBuffer, vtkDataArray recvBuffer)
int	AllGatherV (const int sendBuffer, int recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	AllGatherV (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	AllGatherV (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	AllGatherV (const char sendBuffer, char recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	AllGatherV (const float sendBuffer, float recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	AllGatherV (const double sendBuffer, double recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets)
int	Reduce (const int sendBuffer, int recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (const char sendBuffer, char recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (const float sendBuffer, float recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (const double sendBuffer, double recvBuffer, vtkIdType length, int operation, int destProcessId)
int	Reduce (vtkDataArray sendBuffer, vtkDataArray recvBuffer, int operation, int destProcessId)
int	Reduce (const int sendBuffer, int recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (const char sendBuffer, char recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (const float sendBuffer, float recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (const double sendBuffer, double recvBuffer, vtkIdType length, Operation *operation, int destProcessId)
int	Reduce (vtkDataArray sendBuffer, vtkDataArray recvBuffer, Operation *operation, int destProcessId)
int	AllReduce (const int sendBuffer, int recvBuffer, vtkIdType length, int operation)
int	AllReduce (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, int operation)
int	AllReduce (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, int operation)
int	AllReduce (const char sendBuffer, char recvBuffer, vtkIdType length, int operation)
int	AllReduce (const float sendBuffer, float recvBuffer, vtkIdType length, int operation)
int	AllReduce (const double sendBuffer, double recvBuffer, vtkIdType length, int operation)
int	AllReduce (vtkDataArray sendBuffer, vtkDataArray recvBuffer, int operation)
int	AllReduce (const int sendBuffer, int recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (const unsigned long sendBuffer, unsigned long recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (const unsigned char sendBuffer, unsigned char recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (const char sendBuffer, char recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (const float sendBuffer, float recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (const double sendBuffer, double recvBuffer, vtkIdType length, Operation *operation)
int	AllReduce (vtkDataArray sendBuffer, vtkDataArray recvBuffer, Operation *operation)
virtual int	BroadcastVoidArray (void *data, vtkIdType length, int type, int srcProcessId)
virtual int	GatherVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, int destProcessId)
virtual int	GatherVVoidArray (const void sendBuffer, void recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int type, int destProcessId)
virtual int	ScatterVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, int srcProcessId)
virtual int	ScatterVVoidArray (const void sendBuffer, void recvBuffer, vtkIdType sendLengths, vtkIdType offsets, vtkIdType recvLength, int type, int srcProcessId)
virtual int	AllGatherVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type)
virtual int	AllGatherVVoidArray (const void sendBuffer, void recvBuffer, vtkIdType sendLength, vtkIdType recvLengths, vtkIdType offsets, int type)
virtual int	ReduceVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, int operation, int destProcessId)
virtual int	ReduceVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, Operation *operation, int destProcessId)
virtual int	AllReduceVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, int operation)
virtual int	AllReduceVoidArray (const void sendBuffer, void recvBuffer, vtkIdType length, int type, Operation *operation)

virtual int	ComputeGlobalBounds (int processorId, int numProcesses, vtkBoundingBox bounds, int rightHasBounds=0, int *leftHasBounds=0, int hasBoundsTag=288402, int localBoundsTag=288403, int globalBoundsTag=288404)
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkCommunicator *	SafeDownCast (vtkObject *o)
static void	SetUseCopy (int useCopy)

static int	GetParentProcessor (int pid)
static int	GetLeftChildProcessor (int pid)

static int	MarshalDataObject (vtkDataObject object, vtkCharArray buffer)
static int	UnMarshalDataObject (vtkCharArray buffer, vtkDataObject object)
Protected Member Functions
int	WriteDataArray (vtkDataArray *object)
int	ReadDataArray (vtkDataArray *object)
	vtkCommunicator ()
	~vtkCommunicator ()
int	SendElementalDataObject (vtkDataObject *data, int remoteHandle, int tag)
int	SendMultiBlockDataSet (vtkMultiBlockDataSet *data, int remoteHandle, int tag)
int	SendTemporalDataSet (vtkTemporalDataSet *data, int remoteHandle, int tag)
int	ReceiveDataObject (vtkDataObject *data, int remoteHandle, int tag, int type=-1)
int	ReceiveElementalDataObject (vtkDataObject *data, int remoteHandle, int tag)
int	ReceiveMultiBlockDataSet (vtkMultiBlockDataSet *data, int remoteHandle, int tag)
int	ReceiveTemporalDataSet (vtkTemporalDataSet *data, int remoteHandle, int tag)
Protected Attributes
int	MaximumNumberOfProcesses
int	NumberOfProcesses
int	LocalProcessId
vtkIdType	Count
Static Protected Attributes
static int	UseCopy
Classes
class	Operation

Member Typedef Documentation

typedef vtkObject vtkCommunicator::Superclass

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

Definition at line 54 of file vtkCommunicator.h.

Member Enumeration Documentation

enum vtkCommunicator::Tags

Enumerator:

BROADCAST_TAG
GATHER_TAG
GATHERV_TAG
SCATTER_TAG
SCATTERV_TAG
REDUCE_TAG
BARRIER_TAG

Definition at line 72 of file vtkCommunicator.h.

enum vtkCommunicator::StandardOperations

Enumerator:

MAX_OP
MIN_OP
SUM_OP
PRODUCT_OP
LOGICAL_AND_OP
BITWISE_AND_OP
LOGICAL_OR_OP
BITWISE_OR_OP
LOGICAL_XOR_OP
BITWISE_XOR_OP

Definition at line 83 of file vtkCommunicator.h.

Constructor & Destructor Documentation

vtkCommunicator::vtkCommunicator ( ) [protected]

vtkCommunicator::~vtkCommunicator ( ) [protected]

Member Function Documentation

virtual const char* vtkCommunicator::GetClassName ( ) [virtual]

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

static int vtkCommunicator::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

virtual int vtkCommunicator::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

static vtkCommunicator* vtkCommunicator::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

void vtkCommunicator::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)			`[virtual]`

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObject.

Reimplemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

virtual void vtkCommunicator::SetNumberOfProcesses ( int num ) [virtual]

Set the number of processes you will be using. This defaults to the maximum number available. If you set this to a value higher than the default, you will get an error.

Reimplemented in vtkSocketCommunicator.

virtual int vtkCommunicator::GetNumberOfProcesses ( ) [virtual]

Set the number of processes you will be using. This defaults to the maximum number available. If you set this to a value higher than the default, you will get an error.

virtual int vtkCommunicator::GetLocalProcessId ( ) [virtual]

Tells you which process [0, NumProcess) you are in.

int vtkCommunicator::Send	(	vtkDataObject *	data,
		int	remoteHandle,
		int	tag
	)

This method sends a data object to a destination. Tag eliminates ambiguity and is used to match sends to receives.

int vtkCommunicator::Send	(	vtkDataArray *	data,
		int	remoteHandle,
		int	tag
	)

This method sends a data array to a destination. Tag eliminates ambiguity and is used to match sends to receives.

virtual int vtkCommunicator::SendVoidArray	(	const void *	data,
		vtkIdType	length,
		int	type,
		int	remoteHandle,
		int	tag
	)			`[pure virtual]`

Subclasses have to supply this method to send various arrays of data. The type arg is one of the VTK type constants recognized by the vtkTemplateMacro (VTK_FLOAT, VTK_INT, etc.). length is measured in number of values (as opposed to number of bytes).

Implemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

int vtkCommunicator::Send	(	const int *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 144 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const unsigned int *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 147 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const unsigned long *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 150 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const unsigned char *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 154 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const char *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 158 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const float *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 161 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const double *	data,
		vtkIdType	length,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for sending data arrays.

Definition at line 164 of file vtkCommunicator.h.

int vtkCommunicator::Send	(	const vtkMultiProcessStream &	stream,
		int	remoteId,
		int	tag
	)

Convenience methods for sending data arrays.

int vtkCommunicator::Receive	(	vtkDataObject *	data,
		int	remoteHandle,
		int	tag
	)

This method receives a data object from a corresponding send. It blocks until the receive is finished.

vtkDataObject* vtkCommunicator::ReceiveDataObject	(	int	remoteHandle,
		int	tag
	)

The caller does not have to know the data type before this call is made. It returns the newly created object.

int vtkCommunicator::Receive	(	vtkDataArray *	data,
		int	remoteHandle,
		int	tag
	)

This method receives a data array from a corresponding send. It blocks until the receive is finished.

virtual int vtkCommunicator::ReceiveVoidArray	(	void *	data,
		vtkIdType	maxlength,
		int	type,
		int	remoteHandle,
		int	tag
	)			`[pure virtual]`

Subclasses have to supply this method to receive various arrays of data. The type arg is one of the VTK type constants recognized by the vtkTemplateMacro (VTK_FLOAT, VTK_INT, etc.). maxlength is measured in number of values (as opposed to number of bytes) and is the maxmum lenght of the data to receive. If the maxlength is less than the length of the message sent by the sender, an error will be flagged. Once a message is received, use the GetCount() method to determine the actual size of the data received.

Implemented in vtkDummyCommunicator, vtkMPICommunicator, vtkSocketCommunicator, and vtkSubCommunicator.

int vtkCommunicator::Receive	(	int *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 205 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	unsigned int *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 208 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	unsigned long *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 211 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	unsigned char *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 215 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	char *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 219 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	float *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 222 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	double *	data,
		vtkIdType	maxlength,
		int	remoteHandle,
		int	tag
	)			`[inline]`

Convenience methods for receiving data arrays.

Definition at line 225 of file vtkCommunicator.h.

int vtkCommunicator::Receive	(	vtkMultiProcessStream &	stream,
		int	remoteId,
		int	tag
	)

Convenience methods for receiving data arrays.

virtual vtkIdType vtkCommunicator::GetCount ( ) [virtual]

Returns the number of words received by the most recent Receive(). Note that this is not the number of bytes received, but the number of items of the data-type received by the most recent Receive() eg. if Receive(int*,..) was used, then this returns the number of ints received; if Receive(double*,..) was used, then this returns the number of doubles received etc. The return value is valid only after a successful Receive().

virtual void vtkCommunicator::Barrier ( ) [virtual]

Will block the processes until all other processes reach the Barrier function.

Reimplemented in vtkMPICommunicator, and vtkSocketCommunicator.

int vtkCommunicator::Broadcast	(	int *	data,
		vtkIdType	length,
		int	srcProcessId
	)			`[inline]`