Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site gitpyr.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!gatech!gitpyr!robert From: robert@gitpyr.UUCP (Robert Viduya) Newsgroups: net.followup Subject: Re: VM/IX on IBM 4341 Message-ID: <397@gitpyr.UUCP> Date: Sun, 2-Dec-84 09:54:54 EST Article-I.D.: gitpyr.397 Posted: Sun Dec 2 09:54:54 1984 Date-Received: Tue, 4-Dec-84 06:27:55 EST References: <117@circadia.UUCP> <411@mhuxd.UUCP>, <634@pucc-k> <105@v1.UUCP> Organization: Georgia Tech, Atlanta Lines: 32 > ------------------- > Although I have not used it, I don't think that VMIX sends UNIX > commands to a "disconnected virtual machine". It runs in a virtual > machine unto itself, much as CMS itself does. I believe that > also means that multiple VMIXes could be running simultaneously > on the same machine, and coexisting with CMS. > I've never actually used VM/IX myself, but I believe the implementation is more like OS/MVS under VM rather than CMS under VM. In CMS, each user has his own virtual machine with his own private copy of CMS. CMS is a single user operating system. The user's terminal is the system console for his virtual-machine. OS/MVS, on the other hand, under VM also has its own virtual machine, but, unlike CMS, is a multiple user operating system. Each user 'connects' (or 'Dials' if you prefer) to the virtual machine and the user's terminal is just that, an ordinary terminal. I've never heard of an operating system under VM that work as a 'disconnected virtual machine' where commands are sent to. Not only would it be slow, but, I believe, it would be almost technically impossible for VM to handle a high load of inter-virtual-machine messages (unless, of course, you used the virtual card-punches and card-readers :-). robert -- Robert Viduya Office of Computing Services Georgia Institute of Technology, Atlanta GA 30332 Phone: (404) 894-4669 ...!{akgua,allegra,amd,hplabs,ihnp4,masscomp,ut-ngp}!gatech!gitpyr!robert ...!{rlgvax,sb1,uf-cgrl,unmvax,ut-sally}!gatech!gitpyr!robert