MPICommconnect(3OpenMPI) MPICommconnect(3OpenMPI)

NAME
       MMPPIICCoommmmccoonnnneecctt  - Establishes communication with a server.


SSYYNNTTAAXX
CC SSyynnttaaxx
       #include 
       int MPICommconnect(char *portname, MPIInfo info, int root,
            MPIComm comm, MPIComm *newcomm)


FFoorrttrraann SSyynnttaaxx
       INCLUDE 'mpif.h'
       MPICOMMCONNECT(PORTNAME, INFO, ROOT, COMM, NEWCOMM, IERROR)
            CHARACTER*(*)  PORTNAME
            INTEGER        INFO, ROOT, COMM, NEWCOMM, IERROR


CC++++ SSyynnttaaxx
       #include 
       MPI::Intercomm MPI::Intracomm::Connect(const char* portname,
            const MPI::Info& info, int root) const


IINNPPUUTT PPAARRAAMMEETTEERRSS
       portname Port name (string, used only on root).

       info      Options  given  by root for the connect (handle, used only on
                 root). No options currently supported.

       root      Rank in comm of root node (integer).

       comm      Intracommunicator over which call is collective (handle).


OOUUTTPPUUTT PPAARRAAMMEETTEERRSS
       newcomm   Intercommunicator with client as remote group (handle)

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPICommconnect establishes communication with a server  specified  by
       portname.  It  is collective over the calling communicator and returns
       an intercommunicator in which  the  remote  group  participated  in  an
       MPICommaccept.  The  MPICommconnect  call must only be called after
       the MPICommaccept call has been made by the MPI  job  acting  as  the
       server.

       If the named port does not exist (or has been closed), MPICommconnect
       raises an error of class MPIERRPORT.

       MPI provides no guarantee of fairness in servicing connection attempts.
       That is, connection attempts are not necessarily satisfied in the order
       in which they were initiated, and  competition  from  other  connection
       attempts  may prevent a particular connection attempt from being satis-
       fied.

       The portname parameter is the address of the server. It  must  be  the
       same as the name returned by MPIOpenport on the server.



EERRRROORRSS
       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::ERRORSTHROWEXCEPTIONS, 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
       MPICommseterrhandler; the predefined error handler MPIERRORSRETURN
       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 the MPI man page for a full list of MPI error codes.


SEE ALSO
       MPICommaccept MPIOpenport




Open MPI 1.2                      March 2007        MPICommconnect(3OpenMPI)