The Thing King (1972)

And, as it did in 1972, virtual memory gives you the effect of about twice as much real memory. Back then, a megabyte of memory cost about a million dollars. Today, a gigabyte of memory costs about five dollars. Why are we still bothering with paging?

We used it to enable analyzing trillion particle dark matter simulations a halo at a time, as though they were local. It was fun. We made it part of the way into implementing an fopencookie version, but ended up moving on to other projects.