Existing cf77 codes should work fine as is under f90 . To do this, you just need to add a few lines to your start-up files. We recommend that all users start using the Programming Environment, whether or not you use f90 . The CF90 2.0 compiler is now equivalent in functionality and performance to the CF77 6.0.4 compiling system. The shared cache, available with the ffio cache layer, is now multitask protected.
Manuals are available online via the craydoc facility on meeker.ucar.edu.