deleted material that is not immediately relevant, updated the PGAS section. Pavan: The source is in the mpi3 svn repository. Would be good if you kept all sources there (svn.mpi-forum.org/svn/mpi-forum-docs/trunk/mpi3/wg/hybrid<http://svn.mpi-forum.org/svn/mpi-forum-docs/trunk/mpi3/wg/hybrid>) Marc Snir