Not the Cray-1, but the Navy used a Cray 90 a few years later for CFD calculations modeling flow around ship hulls (code written in Fortran). I wish I had acce

Not the Cray-1, but the Navy used a Cray 90 a few years later for CFD calculations modeling flow around ship hulls (code written in Fortran). I wish I had access to the code I wrote back then - what took minutes or hours on the Cray could probably run in seconds on a RPi now…