Well,

Most Hollywood effects were all done on SGI systems before the slow migration to Linux. Renderman, Maya, were all SGI first-party programs.

Also SGI made huge advances in NUMA and machines with dozens of CPUs/processors before most other companies ventured into this space.

But not business critical like IBM CICS or Java.

1. https://en.wikipedia.org/wiki/NUMAlink

2. https://www.cs.ucr.edu/~bhuyan/CS213/2004/numalink.pdf

3. https://cseweb.ucsd.edu/classes/fa12/cse260-b/Lectures/Lec17...