clusters

This makes overall utilization of clusters more efficient (tighter bin packing), and the corollary is you don't need as many clusters and machines.

Do people running these clusters in production typically run tiers of separate clusters based on how sensitive the data they have access to is?

It doesn't have one across all clusters - and many people are in denial about this, and what it means to them personally.

It seems to be a DSL to describe alerts over whole clusters.

It is widely acknowledged that a solid research university is a prerequisite for these clusters to form.

Supercomputers aren't built so that people can squander the resource (desktop PCs, closest clusters, and phones fulfill that role).

Modern supercomputers are essentially clusters, but with much more advanced network topologies and technologies, shared storage, etc.

Yes, they're in VMs, but recoverable/reschedule-able persistent volumes in container clusters are at best experimental features anywhere you look.

No, the people who run the clusters won't let you run any language just because it has an MPI binding.

I'm sure you could find clusters of a few years where nothing of note came out as well.

Multiple root nodes sprung up as the market exploded - and the cluster sustained in Atlanta, whereas other dot com clusters did not.

I'm hoping to construct one of these for Atlanta's clusters in finance and network hardware/software as well.

"It should be noted that a full 90% of the non-dark-matter mass of the universe appears to be in the form of very thin X-ray-hot plasma clouds surrounding large galaxy clusters, unlikely to condense to the point of star formation via understood processes." Wow.