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Radiation hardeningRadiation hardeningPosted Sep 19, 2013 8:51 UTC (Thu) by kleptog (subscriber, #1183)In reply to: NSEU on the hypervisor? by Cyberax Parent article: Asteroid "mining" with Linux and FOSS
I actually found the wikipedia article on this quite informative:
http://en.wikipedia.org/wiki/Radiation_hardening
Essentially you have two kinds of damage. Actual physical irreversible damage which degrades your chips over a long period. And transient spikes which can cause problems. The latter can sometimes be fixed by turning it off and on, but that seems a little difficult if you're doing it on one chip with VMs.
Still, given the price difference you can play the odds. If for the same price you can send up 100 of these things and a dozen fail you're still way ahead (except, perhaps, for the space junk).
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Radiation hardening Posted Sep 27, 2013 15:39 UTC (Fri) by Wol (guest, #4433) [Link]
The other to bear in mind is the steady shrinkage in the size of the die. What you really want is a last-generation processor made using this-generation fabrication.
Let's assume a particle strike causes a 5nm "area of destruction". Do you want that hitting a track that's 10nm wide, or 30nm wide?
In other words, based purely on physical component size, older hardware will be more robust.
Cheers,
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