MPI_Session_init
Creates a new session handle
#include <mpi.h>
int MPI_Session_init(MPI_Info info, MPI_Errhandler errhandler, MPI_Session *session)
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_SESSION_INIT(INFO, ERRHANDLER, SESSION, IERROR)
INTEGER INFO, ERRHANDLER, SESSION, IERROR
USE mpi_f08
MPI_Session_init(info, errhandler, session, ierror)
TYPE(MPI_Info), INTENT(IN) :: info
TYPE(MPI_Errhandler), INTENT(IN) :: errhandler
TYPE(MPI_Session), INTENT(OUT) :: session
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
info
: info object (handle)errhandler
: error handler to be attached to the returned session(handle)
session
: New session (handle).ierror
: Fortran only: Error status (integer).
MPI_Session_init
is used to instantiate an MPI Session. The returned session handle can be used to query the runtime system about characteristics of the job within which the process is running, as well as other system resources. An application can make multiple calls to MPI_Session_init
and the related MPI_Session_finalize
routine.
The info argument is used to request MPI functionality requirements and possible MPI implementation specific capabilities.
The errhandler argument specifies an error handler to invoke in the event that the Session instantiation call encounters an error.
MPI_Session_get_num_psets
MPI_Session_group_from_pset