A rack of our equipment weighs about 2tonnes and runs at about 35kW. That's pretty much a car... and they last about 5 years... so it is very comparable to your 1996 gasoline car.
On Fri, Apr 22, 2016 at 10:29 AM, Mark Hahn <[email protected]> wrote: > in stark contrast to the environmentally friendly-ness of super computers >> and clusters... >> > > I assume this was sarcasm, but then I was trying to think about what, in a > datacenter, is particularly "dirty". sheetmetal and wire > are not inherently clean industries, but they're also well-established > and well-regulated, which means that the destruction-per-unit is low. > (steel for cases is presumably part-scrap like most sheetmetal; > I imagine the recycle rate for copper is pretty high too. perhaps even > for Al (disk drives).) there's a fair amount of plastic, to be sure, > but again: since your cables will be used for 5-7 years, they're not in > the same universe of dirtiness as consumer junk. PC boards are glass > fiber and polymer, not that easy to dispose of, but not evil (like the > encapsulating plastic in chips). silicon devices are pretty green as well, > since although a big plant has a big footprint, that's amortized over > billions of units. > > power seems the most reasonable environmental complaint, > but our systems are certainly not wasteful of that, since it's the easiest > thing to tweak. it's also a pretty linear > function of demand, and it's also improving drastically > (unlike the env footprint of copper or steel or plastic.) > > phew, glad I got that off my chest ;) > I can go back to feeling guilty about my 1996 gasoline car... > > regards, mark hahn. > > _______________________________________________ > Beowulf mailing list, [email protected] sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > -- Dr Stuart Midgley [email protected]
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