C Syntax

       2003-2025, The Open MPI Community

                                                  Jun 07, 2025                               MPI_T_PVAR_WRITE(3)

MPI_T_pvar_write attempts to set the value of the performance variable identified by the handle specified
       in  handle  in  the session specified in session. The value to be written is specified in buf. The caller
       must ensure that the buffer specified in buf is large enough to hold the entire value of the  performance
       variable.

MPI_T_pvar_write will fail if:

       • MPI_T_ERR_NOT_INITIALIZED: The MPI Tools interface not initialized

       • MPI_T_ERR_INVALID_HANDLE: The handle is invalid or not associated with the session

       • MPI_T_ERR_INVALID_SESSION: Session argument is not a valid session

       • MPI_T_ERR_PVAR_NO_WRITE: Variable cannot be written

       SEEALSO:

          • MPI_T_pvar_handle_alloc

          • MPI_T_pvar_get_info

          • MPI_T_pvar_session_create

       • session: Performance experiment session.

       • handle: Performance variable handle.

       • buf: Initial address of storage location for variable value.

CSyntax
          #include <mpi.h>

          int MPI_T_pvar_write(MPI_T_pvar_session session, MPI_T_pvar_handle handle, const void *buf)