[chrisseaton]

Beowulf was about the hardware and the interconnect - both being commodity. Not about the software. Most Hadoop etc runs on Beowulf I’d imagine.

Clusters used to use more custom hardware and interconnects - that’s now the exception rather than the norm. You still find that in some HPC situations but most people manage with commodity cloud.

[walshemj]

Depends on cluster design and size big ones use exotic interconnects not your traditional network design