Well, I'm just one of those sysadmins (but the clusters on which I work are much more smaller than the 'monsters' in the top500). I don't know if someone could envy me but there are surely other things apart the noise of HVAC systems (by the way we are using remote console when possible :-)). How about working with a lot of different computer nodes combining them with a fast network (Infiniband) and exporting the storage space through the cluster with a parallel file system? How about optimizing every aspect of the software installation (OS, compilers, scientific libraries) to give your users the best resources to run their simulations (biophysicist, electrical engineers, etc.)? To not to mention follow the aspects regarding the structure of the data center: cooling systems, UPS, raised floors, etc.? It doesn't sound too bad to me :-)

Thanks, but I doubt I will ever be so lucky, especially considering even if I did have an opportunity I'd probably lack in experience needed for such a job. Anyways, while fantasizing, my dream job would be to work in r&d on building those HPC machines (software and system wise, algos especially, not EE), or writing/optimizing code that runs on them, especially vector processing units. My area of interest is graphics research.