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MPI_Rsend_init - Builds a handle for a ready send.
#include <mpi.h>
int MPI_Rsend_init(const void *buf, int count, MPI_Datatype datatype,
int dest, int tag, MPI_Comm comm, MPI_Request *request)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_RSEND_INIT(BUF, COUNT, DATATYPE, DEST, TAG, COMM, REQUEST,
IERROR)
<type> BUF(*)
INTEGER COUNT, DATATYPE, DEST, TAG, COMM, REQUEST, IERROR
USE mpi_f08
MPI_Rsend_init(buf, count, datatype, dest, tag, comm, request, ierror)
TYPE(*), DIMENSION(..), INTENT(IN), ASYNCHRONOUS :: buf
INTEGER, INTENT(IN) :: count, dest, tag
TYPE(MPI_Datatype), INTENT(IN) :: datatype
TYPE(MPI_Comm), INTENT(IN) :: comm
TYPE(MPI_Request), INTENT(OUT) :: request
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
- buf
- Initial address of send buffer (choice).
- count
- Number
of elements sent (integer).
- datatype
- Type of each element (handle).
- dest
- Rank of destination (integer).
- tag
- Message tag (integer).
- comm
- Communicator
(handle).
- request
- Communication request (handle).
- IERROR
- Fortran only: Error status (integer).
Creates a persistent communication
object for a ready mode send operation, and binds to it all the arguments
of a send operation.
A communication (send or receive) that uses a persistent
request is initiated by the function MPI_Start.
Almost all MPI routines
return an error value; C routines as the value of the function and Fortran
routines in the last argument. C++ functions 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.
MPI_Bsend_init
MPI_Send_init
MPI_Sssend_init
MPI_Recv_init
MPI_Start
MPI_Startall
MPI_Request_free
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