Only if you have access to corporate-level hardware:

"It took us 48 hours to build the suffix array for RedPajama on a single node with 128 CPUs and 1TiB RAM"

It's okayish. Considering 64G to 128G are available for (nerd) high-end consumers you're just off with a factor 5 (if we can squeeze out a little bit more performance).

Thas is pretty astonishing in my opinion.