mpi_issend(3openmpi) [osx man page]

MPI_Issend(3OpenMPI)													      MPI_Issend(3OpenMPI)

NAME

       MPI_Issend - Starts a nonblocking synchronous send.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Issend(void *buf, int count, MPI_Datatype datatype, int dest,
	    int tag, MPI_Comm comm, MPI_Request *request)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_ISSEND(BUF, COUNT, DATATYPE, DEST, TAG, COMM, REQUEST, IERROR)
	    <type>    BUF(*)
	    INTEGER   COUNT, DATATYPE, DEST, TAG, COMM, REQUEST, IERROR

C++ Syntax
       #include <mpi.h>
       Request Comm::Issend(const void* buf, int count, const
	    Datatype& datatype, int dest, int tag) const

INPUT PARAMETERS

       buf	 Initial address of send buffer (choice).

       count	 Number of elements in send buffer (integer).

       datatype  Datatype of each send buffer element (handle).

       dest	 Rank of destination (integer).

       tag	 Message tag (integer).

       comm	 Communicator (handle).

OUTPUT PARAMETERS

       request	 Communication request (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       Starts a synchronous mode, nonblocking send.

       Nonblocking  calls allocate a communication request object and associate it with the request handle (the argument request). The request can
       be used later to query the status of the communication or wait for its completion.

       A nonblocking send call indicates that the system may start copying data out of the send buffer. The sender should not access any  part	of
       the send buffer after a nonblocking send operation is called, until the send completes.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception  mechanism
       will be used to throw an MPI:Exception object.

       Before  the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for
       I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN  may	be
       used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Ssend

Open MPI 1.2							  September 2006					      MPI_Issend(3OpenMPI)

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MPI_Rsend(3OpenMPI)													       MPI_Rsend(3OpenMPI)

NAME

       MPI_Rsend - Ready send.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Rsend(void *buf, int count, MPI_Datatype datatype, int dest,
	    int tag, MPI_Comm comm)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_RSEND(BUF, COUNT, DATATYPE, DEST, TAG, COMM, IERROR)
	    <type>    BUF(*)
	    INTEGER   COUNT, DATATYPE, DEST, TAG, COMM, IERROR

C++ Syntax
       #include <mpi.h>
       void Comm::Rsend(const void* buf, int count, const Datatype&
	    datatype, int dest, int tag) const

INPUT PARAMETERS

       buf	 Initial address of send buffer (choice).

       count	 Number of elements in send buffer (nonnegative integer).

       datatype  Datatype of each send buffer element (handle).

       dest	 Rank of destination (integer).

       tag	 Message tag (integer).

       comm	 Communicator (handle).

OUTPUT PARAMETER

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       A  ready  send  may  only be called if the user can guarantee that a receive is already posted. It is an error if the receive is not posted
       before the ready send is called.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
       tions  do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except  for
       I/O  function  errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be
       used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

Open MPI 1.2							  September 2006					       MPI_Rsend(3OpenMPI)

Linux and UNIX Man Pages

mpi_issend(3openmpi) [osx man page]

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