Anton Aylward wrote:
On 06/05/2014 01:27 AM, Damian Ivanov wrote:
You are full of bullshit. Multiseat was a hack.
Indeed. Aaron is doing what he often does and talking about something using a shift in terminology. Multi-user is not the same as multi-seat.
In this case he starts referring to 'multi-user' versions of UNIX. Yes, I was administering PDP-11s back in the late 70s/early80s running V6 and V7 UNIX ('from the 'love, Dennis' tapes) and BSD2.8 and kernel hacking V6 and V7 and we had up to 40 users on some of the larger config 11/45s before we switched to VAXen.
But what Aaron fails to mention was that these users were running VT100 clones in text only mode on 9600 baud RS-232 links, not the high resolution graphics with keyboard and mouse such as I am currently working at.
As early as 1984 at Purdue, I remember entire rooms full of high resolution graphics terminal all directly wired into the same computer. They were used by grad students and some upper classmen to designed circuit chips (MSI, LSI and eventually VLSI) One set were graphics terminals with storage tubes, tied into an IBM-370 running VM/CMS, and the other were some Tektronix 4000 series (I forget the exact model number) terminals, which were all directly wired into eg.ecn.purdue.edu, which was a dual-CPU VAX-11/780 (The original dual-CPU VAX was built, and programmed by George Goble at Purdue, for his masters degree in EE, the programming for the dual-CPU was included in BSD kernels starting with 4.2 BSD. Goble continues to work at Purdue, where he is Chief Engineer of the Engineering Computer Network -- which he essentially built from scratch in the late 1970's and early 1980's, including a networking protocol called pnet -- which included remote job execution, and a "network shell" ns, before TCP/IP was ported to UNIX.
It is possible to plug in more graphics cards to my PC, and another (USB) keyboard and another (USB) mouse. Depending on the mobo and the graphics card I might get another two or three potential graphic stations.
LTSP has been doing that for 10 years. Long before Multi-seat.
But as Damian says, the classic hack with X to make that work was unstable and not good.
This is what MULTI-SEAT is about.
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