Date: Sun, 9 Aug 1998 10:03:38 -0400 (EDT) From: djv@bedford.net To: grog@lemis.com (Greg Lehey) Cc: djv@bedford.net, freebsd-chat@FreeBSD.ORG Subject: Re: FreeBSD Message-ID: <199808091403.KAA04576@lucy.bedford.net> In-Reply-To: <19980809104012.P14475@freebie.lemis.com> from Greg Lehey at "Aug 9, 98 10:40:12 am"
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Greg Lehey wrote > (moved to -chat) > On Saturday, 8 August 1998 at 7:12:01 -0400, CyberPeasant wrote: > > Brandon Lockhart wrote: > >> > >> You can only have > >> one operating system loaded at a single point in time (correct me if I am > >> wrong). > > > > You're wrong :) The IBM mainframe OS, MVS, will run several OS's on > > the same machine, simultaneously. Each user gets his own OS. This > > is very cool... > > Nowadays the operating system is called OS/390, also known as UNIX 95. > I thought it was VM that ran multiple operating systems, not MVS. You think correctly. Why do i have MVS on my brain... for(i=0;i<10000;i++) promise("I will not make this misteak again"); > First I've heard of it. I haven't been keeping much track of the 360 > family in the last 10 years or so, but before that they were decidedly > CPU bound. Well, everything was bound up then. :) The 360/195 (I think this was known as the "Stretch") was quite snappy in its time. The apps I ran (numerical) were by definition CPU bound, anyway. This was a 2 of a kind unit (one for NSA, one for Los Alamos IIRC), with a hotrod CPU and a big load of memory, how much I've forgotten (128MB? More?), which IIRC was made of discrete transistors. I think it was faster than its contemporaries in the 370 series. The Navy kept it running until ~1986, I believe the power bill was why they shut it down. :-) (It was at the PAX NATC in S. Maryland). It had the cute feature, that if you requested more memory than was installed, it would enter your job in a queue, and notify the operator to order and install more memory. Dave -- "Today, machines sit on our desks and spend the overwhelming majority of their cycles doing nothing more important than blinking a cursor." --William Dickens http://www.feedmag.com/html/feedline/98.07dickens/98.07dickens_master.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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