--- mpitests-3.2/IMB-3.2/src/IMB_window.c.orig	2013-02-25 15:50:55.000000000 -0500

+++ mpitests-3.2/IMB-3.2/src/IMB_window.c	2013-02-25 15:51:22.000000000 -0500

@@ -140,6 +140,9 @@ Output variables: 

                          c_info->rank, 0, 1, c_info->r_data_type, c_info->WIN);

           MPI_ERRHAND(ierr);

           }

+          /* Added a call to MPI_WIN_FENCE, per MPI-2.1 11.2.1 */

+          ierr = MPI_Win_fence(0, c_info->WIN);

+          MPI_ERRHAND(ierr);

           ierr = MPI_Win_free(&c_info->WIN);

           MPI_ERRHAND(ierr);

 	}