The MITgcm code and documentation are under continuous development. The last official release was called "Release1_patch8" and the current development is stabilizing in anticipation of a "Release2_beta" announcement. Both the last stable release and the current CVS contents can be obtained at:
$ export CVSROOT=':pserver:cvsanon@mitgcm.org:/u/gcmpack' $ cvs login ( enter the CVS password: "cvsanon" ) $ cvs co MITgcm
$ export CVSROOT=':pserver:cvsanon@mitgcm.org:/u/gcmpack' $ cvs login ( enter the CVS password: "cvsanon" ) $ cvs co -r 'release1_p8' MITgcm