MPI_Mrecv - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI

NAMEMPI_Mrecv − Blocking receive for a matched message

SYNTAX

C Syntax#include <mpi.h> int MPI_Mrecv(void *buf, int count, MPI_Datatype type, MPI_Message *message, MPI_Status *status)

Fortran SyntaxINCLUDE 'mpif.h' MPI_MRECV(BUF, COUNT, DATATYPE, MESSAGE, STATUS, IERROR) <type> BUF(*) INTEGER OUNT, DATATYPE, MESSAGE INTEGER STATUS(MPI_STATUS_SIZE), IERROR

C++ SyntaxThere is no C++ binding for this function.

INPUT PARAMETERScount  Number of elements to receive (nonnegative integer). datatype  Datatype of each send buffer element (handle). message  Message (handle).

OUTPUT PARAMETERSbuf  Initial address of receive buffer (choice). status  Status object (status). IERROR  Fortran only: Error status (integer).

DESCRIPTIONThe 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.

NOTEThis is an MPI-3 function and has no C++ binding.

ERRORSAlmost 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.

SEE ALSOMPI_Mprobe MPI_Improbe MPI_Probe MPI_Iprobe MPI_Imrecv MPI_Cancel
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