I worked on many generations of supercomputers. I started with Cray 1S, Cray XMP, Cray YMP, Fujitsu VPP 300, Fujitsu VPP 500, and Fujitsu VX. Most Cray computers are now museum items. They had computing power equivalent to that of a desktop computer. They were priced with millions of dollars each.
I started using supercomputers for my scientific research. I was using a supercomputer to study the formation, development, and dissipation of a cloud. When I worked for Digital Production I used Cray to do animation and compositing for movies and videos. When I worked for JPL and NASA, I used Cray to do scientific visualization. In Fujitsu, I used the supercomputer to simulate clouds and visualized scientific and engineering data.
Supercomputing Facility at NASA (around 1990)
Supercomputing Facility at Fujitsu (Around 1995)