Son of Grid Engine is a community continuation of the old Sun Grid Engine project. It is a (big, and increasing) superset of the apparently dead Univa distribution and aims to integrate useful existing patches, utilities, to be more-or-less a superset free version.
These are mostly fairly generic, and largely apply also to versions based on the SGE 6.2u5 code. However, the ones derived from the code base above describe some additional features.
This is a somewhat random collection of links to additional material that may be useful.