cps::MPIRequestManager Class Reference
[Communications objects and functions, Code specific to the MPI interface]

This handles the MPI requests. More...

#include <mpi_requests.h>

List of all members.

Public Member Functions
	MPIRequestManager ()
	Default constructor:.
	~MPIRequestManager ()
	Default destructor.
void	AddRequest (MPI_Request req)
	Store a request handle.
MPI_Request *	ReqArray ()
	Get the list of requests.
int	NumReq ()
	Get the number of requests currently stored.
void	Clear ()
	Empty the list.

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Detailed Description

This handles the MPI requests.

The MPI requests are used as identifying handles in non-blocking communications; see MPI literature for more more details, <e>e.g.</e> http://www-unix.mcs.anl.gov/mpi/mpi-standard/mpi-report-1.1/node44.htm#Node44

Currently, it is very dumb and uses a fixed size (MPI_REQ_BASE_SIZE) array to store the handles. If this is exceeded, it just crashes out.

Todo:

This should

• Use a linked list.
• Store the direction as well as the handle, in case we wish to implement the form of SCUTransComplete that only waits for the transfers in a specified direction to cease.

Definition at line 66 of file mpi_requests.h.

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Constructor & Destructor Documentation

cps::MPIRequestManager::MPIRequestManager (   )  [inline]

Default constructor:. Initialises the list of requests. Postcondition: All MPI requests are initially set to MPI_REQUEST_NULL. Definition at line 78 of file mpi_requests.h.

cps::MPIRequestManager::~MPIRequestManager (   )  [inline]

Default destructor. Deletes the storage associated with the request array. Definition at line 86 of file mpi_requests.h.

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Member Function Documentation

void cps::MPIRequestManager::AddRequest (  MPI_Request  req  )  [inline]

Store a request handle. Parameters: req  The request handle. Postcondition: The request is stored. Definition at line 95 of file mpi_requests.h. References cps::MPISCU::printf(). Referenced by cps::MPISCU::Trans().

void cps::MPIRequestManager::Clear (   )  [inline]

Empty the list. Definition at line 122 of file mpi_requests.h.

int cps::MPIRequestManager::NumReq (   )  [inline]

Get the number of requests currently stored. Returns: The number of stored handles. Definition at line 117 of file mpi_requests.h.

MPI_Request* cps::MPIRequestManager::ReqArray (   )  [inline]

Get the list of requests. Returns: A pointer to the first request. Definition at line 109 of file mpi_requests.h.

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

• include/comms/mpi_requests.h

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