Past releases are in the PGI download archives. Multiple releases can be installed on the same system. Current PGI license keys work with all older releases.
While you are free to download any of these files, you will only be able to use the components for which you have valid license keys installed. Temporary license keys enable all PGI Accelerator Fortran/C/C++ Workstation and PGI Accelerator Visual Fortran features.
The Full Package option includes all PGI and 3rd party packages. Download the Full Package for the initial installation of each major software release. The Update Package only includes PGI software. If available, download the Update Package for minor version updates.
Starting January 2015, PGI releases will no longer include support for Windows XP, Windows Server 2003, and Windows Server 2008.