The INFN GRID Middleware Release (IG Release) is the reference distribution in IGI. IG Release is based on the gLite Middleware Release and integrates it with additional middleware components of interest to support both regional and international VOs in Italy. As consequence in the documentation below we refer to igrelease.
Glite User Guide is the main reference document for users and site managers, as it provides a good and exhaustive overview of the gLite 3.1 middleware. It presents the main functional building blocks of the Grid, and the Grid service interfaces available in order to run jobs and manage data in the Grid.