C Syntax

       2003-2025, The Open MPI Community

                                                  Jun 07, 2025                        MPI_T_PVAR_SESSION_FREE(3)

MPI_T_pvar_session_create  creates  a  session  for  accessing  performance variables. The new session is
       returned in the session parameter.

       MPI_T_pvar_session_free releases a session allocated by MPI_T_pvar_session_create and  sets  the  session
       parameter to MPI_T_PVAR_SESSION_NULL.

MPI_T_pvar_session_create will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

       • MPI_T_ERR_MEMORY: Out of memory

       • MPI_T_ERR_OUT_OF_SESSIONS: No more sessions available

       MPI_T_pvar_session_free will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

       • MPI_T_ERR_INVALID_SESSION: The session parameter is not a valid session

CSyntax
          #include <mpi.h>

          int MPI_T_pvar_session_create(MPI_T_pvar_session *session)

          int MPI_T_pvar_session_free(MPI_T_pvar_session *session)