See, that's the thing: We have real engineering, with real jobs, with government regulations and approvals on the line, and things to archive for decades .. for legal reasons.
Regular jobs around here take around 512 to 1024 cores, and have to be distributed onto multiple machines because the job won't fit in memory otherwise. Even with 512 GB per machine it's a tight fit, as the engineers are always wanting bigger, better, faster, more. Failed jobs because of "out of memory" are a daily occurrence here. If you do the math a job around here takes around 6 to 8 TB of RAM. Result files can also range into the terabytes.
We don't do serverless, because all those machines have to work in lockstep, as each machine only has a part of the model geometry. And when one machine is slightly slower than the others it affects the whole job, as the simulation only progresses to the next iteration when all machines are done with the current one. We also don't this "virtualization" thing, because even 3% performance loss is around 10 minutes of lost time on a 6 hour job. Those are 10 minutes that the machines and licenses can't run another job, and we sometimes have jobs that can run for weeks, sometimes more than a month.
