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MPI_Mrecv - Blocking receive for a matched message
#include <mpi.h>
int MPI_Mrecv(void *buf, int count, MPI_Datatype type,
MPI_Message *message, MPI_Status *status)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_MRECV(BUF, COUNT, DATATYPE, MESSAGE, STATUS, IERROR)
<type> BUF(*)
INTEGER COUNT, DATATYPE, MESSAGE
INTEGER STATUS(MPI_STATUS_SIZE), IERROR
USE mpi_f08
MPI_Mrecv(buf, count, datatype, message, status, ierror)
TYPE(*), DIMENSION(..) :: buf
INTEGER, INTENT(IN) :: count
TYPE(MPI_Datatype), INTENT(IN) :: datatype
TYPE(MPI_Message), INTENT(INOUT) :: message
TYPE(MPI_Status) :: status
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
- count
- Number of elements to receive (nonnegative integer).
- datatype
- Datatype of each send buffer element (handle).
- message
- Message
(handle).
- buf
- Initial address of receive buffer (choice).
- status
- Status object (status).
- IERROR
- Fortran only: Error status (integer).
The functions MPI_Mrecv and MPI_Imrecv receive messages that
have been previously matched by a matching probe.
If MPI_Mrecv is called
with MPI_MESSAGE_NULL as the message argument, the call returns immediately
with the status object set to source = MPI_PROC_NULL, tag = MPI_ANY_TAG,
and count = 0, as if a receive from MPI_PROC_NULL was issued.
This
is an MPI-3 function and has no C++ binding.
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.
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_Mprobe
MPI_Improbe
MPI_Probe
MPI_Iprobe
MPI_Imrecv
MPI_Cancel
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