Silicon Graphics was bought by Rackable for pennies back in 2009, Rackable then changed its name to SGI. The SGI of old is long gone.
We have an SGI UV300 system, which has a single kernel image running on 96 cores with 6TB of RAM. Not many people build systems like that these days. The newest expansion of the Goddard supercomputer uses SGI servers. I wish them well as part of HPE.