I generated a very large graph, too large to simply display and manipulate with copy/paste operations. How can I somehow save the graph to a file to allow it to be rapidly reloaded after I quit out of the kernel and restart Mathematica?
From the comments of Spawn1710D and Szabolcs:
DumpSave might be of help. With
DumpSave you will have the object saved in an mx file so the size will be smaller and will load faster.
, where G is your graph to save and
to load it. Make sure the file is located inside the path of Mathematica and keep in mind that the file can be loaded only to computers with the same kind of OS, so if you make the mx on windows it won't load in Mac OS.
Export can be used. It can also write MX files, but doesn't store variable names inside (only the data). Or just use
Export["name.mz", Compress[graph], "String"].