How do you communicate a 60GB answer?
There’s evidently now a wiki for the Atlas project. On one page I found some very helpful advice:
The atlas project has computed Kazhdan-Lusztig polynomials for E8. (That is, the large block of the split real form of E8). The answer consists of two files, totalling 60 Gigabytes. This is too large to download conveniently over the internet. The files have been put on a portable usb/firewire drive (never underestimate the bandwidth of a truck).
Sage advice, that parenthetical.