IDXL_Comm Class Reference

IDXL_Comm is the implementation of the user type IDXL_Comm. More...

#include <idxl.h>

Collaboration diagram for IDXL_Comm:


Public Types
enum	op_t { send_t = 17, recv_t, sum_t }
Public Member Functions
	IDXL_Comm (int tag, int context)
void	reset (int tag, int context)
	~IDXL_Comm ()
void	send (const IDXL_Side idx, const IDXL_Layout dtype, const void *src)
void	recv (const IDXL_Side idx, const IDXL_Layout dtype, void *dest)
void	sum (const IDXL_Side idx, const IDXL_Layout dtype, void *srcdest)
void	post (void)
void	wait (void)
bool	isPosted (void)
	Return true if we've sent off our messages.
bool	isComplete (void)
Private Attributes
CkVec< sto_t >	sto
	Stuff to send/receive.
CkVec< msg_t * >	msg
	Message buffers for each processor.
int	nMsgs
CkVec< MPI_Request >	msgReq
	List of outgoing MPI requests (needs to be a separate array for MPI) Length is always nMsgs.
CkVec< MPI_Status >	msgSts
int	tag
MPI_Comm	comm
bool	isPost
bool	isDone
Data Structures
class	msg_t
	This class represents an MPI send or receive operation. More...
class	sto_t
	This class represents one communication operation: a send/sum or send/recv. More...

Detailed Description

IDXL_Comm is the implementation of the user type IDXL_Comm.

It is the representation for an unfinished communication operation. This object's life cycle is: -constructor -repeated add/recv/sum calls -single send call -repeated recv/sum calls -recv(msg) until isDone returns true

Definition at line 37 of file idxl.h.

Member Enumeration Documentation

enum IDXL_Comm::op_t

Enumerator:

send_t
recv_t
sum_t

Definition at line 39 of file idxl.h.

Constructor & Destructor Documentation

IDXL_Comm::IDXL_Comm	(	int	tag,
		int	context
	)

Definition at line 196 of file idxl.C.

References reset().

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IDXL_Comm::~IDXL_Comm ( )

Definition at line 213 of file idxl.C.

References msg.

Member Function Documentation

void IDXL_Comm::reset	(	int	tag,
		int	context
	)

Definition at line 199 of file idxl.C.

References isDone, isPost, msgReq, msgSts, nMsgs, CkVec< T >::resize(), sto, and tag.

Referenced by IDXL_Chunk::addComm(), and IDXL_Comm().

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void IDXL_Comm::send	(	const IDXL_Side *	idx,
		const IDXL_Layout *	dtype,
		const void *	src
	)

Definition at line 220 of file idxl.C.

References isPost, send_t, and sto.

Referenced by IDXL_Comm_sendrecv().

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void IDXL_Comm::recv	(	const IDXL_Side *	idx,
		const IDXL_Layout *	dtype,
		void *	dest
	)

Definition at line 225 of file idxl.C.

References isPost, recv_t, and sto.

Referenced by IDXL_Comm_sendrecv().

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void IDXL_Comm::sum	(	const IDXL_Side *	idx,
		const IDXL_Layout *	dtype,
		void *	srcdest
	)

Definition at line 230 of file idxl.C.

References isPost, sto, and sum_t.

void IDXL_Comm::post ( void )

Definition at line 236 of file idxl.C.

References IDXL_Comm::msg_t::allocate(), IDXL_Layout::compressedBytes(), dtype, IDXL_Comm::msg_t::getBuf(), IDXL_List::getDest(), IDXL_Side::getLocalList(), IDXL_List::getVec(), idx, isPost, PUP::l, len, IDXL_Comm::msg_t::ll, PUP::m, MPI_Irecv, MPI_Isend, msg, msgReq, nMsgs, op, recv_t, PUP::s, send_t, IDXL_List::size(), IDXL_Side::size(), IDXL_Comm::msg_t::sto, sto, sum_t, and tag.

Referenced by wait().

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void IDXL_Comm::wait ( void )

Definition at line 278 of file idxl.C.

References IDXL_Comm::sto_t::data, IDXL_Comm::sto_t::dtype, IDXL_Comm::msg_t::getBuf(), IDXL_Side::getLocalList(), IDXL_List::getVec(), IDXL_Comm::sto_t::idx, isDone, isPosted(), PUP::l, IDXL_Comm::msg_t::ll, PUP::m, MPI_Waitall, msg, msgReq, msgSts, nMsgs, IDXL_Comm::sto_t::op, post(), recv_t, CkVec< T >::resize(), PUP::s, IDXL_Layout::scatter(), IDXL_Layout::scatteradd(), send_t, IDXL_List::size(), IDXL_Comm::msg_t::sto, and sum_t.

Referenced by IDXL_Chunk::waitComm().

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bool IDXL_Comm::isPosted ( void ) [inline]

Return true if we've sent off our messages.

Definition at line 103 of file idxl.h.

References isPost.

Referenced by wait().

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bool IDXL_Comm::isComplete ( void ) [inline]

Definition at line 104 of file idxl.h.

References isDone.

Referenced by IDXL_Chunk::addComm(), and IDXL_Chunk::pup().

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Field Documentation

CkVec<sto_t> IDXL_Comm::sto [private]

Stuff to send/receive.

Definition at line 68 of file idxl.h.

Referenced by post(), recv(), reset(), send(), and sum().

CkVec<msg_t *> IDXL_Comm::msg [private]

Message buffers for each processor.

Only the first nMsgs elements are used this time, but the remaining elements stay allocated (lazy deallocation). This avoids slow memory allocation at runtime.

Definition at line 73 of file idxl.h.

Referenced by post(), wait(), and ~IDXL_Comm().

int IDXL_Comm::nMsgs [private]

Definition at line 74 of file idxl.h.

Referenced by post(), reset(), and wait().