At 10:31 PM +0100 4/4/11, Liam Proven wrote:
The 6th episode of Carl Sagan's /Cosmos/ has some
loving shots of the
main computer room at JPL at the end of the 1970s. It's 38min into
this episode:
http://www.youtube.com/user/TheScienceFoundation#p/u/27/y7Qs3iXqgzs
... and lasts a good 2-3min. There's a bit more later, but then, it's
Cosmos, the whole thing is extremely well-worth watching.
I'd be very interested if anyone could ID the systems, drives,
terminals and so on shown, though!
In fact I was working as a software engineer in the Voyager Software
System Engineering office at the time.
At that point, Voyager was still a very large project, with many
teams scattered throughout the Lab. The Space Flight Operations
Facility (later renamed Center) had three floors of computers of
interest for this discussion.
- One floor used Modcomp computers to relay and decommutate the data
coming from the tracking stations, the Deep Space Network (DSN).
- Another floor was all IBM 360s; these were used for near real time
analysis of engineering (spacecraft health and instrument) data. One
system was prime, another was backup, a third was standby and could
be used by the developers (as long as one of the other two didn't
crash). My first job at JPL (1977) was in the Ground Data Systems
group programming these computers.
- A third floor was all Univac 1108 (at the time of Sagan's video;
these were later upgraded to 1100/81). These were used for non-real
time analysis of both science and engineering data. In 1979, when
the referenced video takes place?, I was using these remotely from
the VGR SSE office.
Another group, entirely independent of the flight project (termed
"multi-mission"), was responsible for taking imaging data and turning
it into products. The Image Processing Lab (IPL) performed this
function in another building entirely. I don't know what computers
they used.
By 1981 I had moved into a multi-mission group creating
computer-generated animations, the Computer Graphics Lab (CGL). Jim
Blinn was the primary animator/engineer. Many of his animations were
used by Sagan. When I came to the group, all animations were done on
PDP-11/55 computers (we had a pair, IIRC). Eventually we moved over
to the VAX line.
All very interesting work.
John