tgoodman@bbn.com (Todd Goodman) (01/16/90)
I've recently been asked by someone who has the task of porting to Unix a large system written to run on VMS what the Unix equivalent of VMS's Mapped Global Sections are. The system uses very large Mapped Global Sections (larger than the available physical memory). I mentioned shared memory to him, but he was concerned since there was no backing store to a file (as with Mapped Global Sections) and because shared memory is shared real memory (I think this is true; Is it?) instead of virtual memory. I personally believe that they would be better served by looking at what they really want to do and then reimplementing in a more traditional Unix method. Barring reimplementation, what are people's suggestions? It seems that if he wants to stick with the shared virtual memory methodology that he will have to implement something himself. Is this the case? Discussions related to any of the common Unix flavors will be appreciated since I don't believe they've picked a specific flavor (but will probably go with SunOS). Thanks in advance, Todd Goodman +=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=+ | Todd Goodman, BBN Communications, Inc. tgoodman@bbn.com | | Disclaimer: I never speak for anyone but myself. uunet!bbn!tgoodman | +=-=-=-=-=-=-=-=-=-=-=-= "Right theory, wrong universe." =-=-=-=-=-=-=-=-=-=-=+