4 ms·
You can have one disruptive rad event every 10 minutes if you compare and correct state between three or five computers at something 100 Hz. And a more recent
by nynx 4y ago
You can have one disruptive rad event every 10 minutes if you compare and correct state between three or five computers at something 100 Hz.
And a more recent computer that isn't designed for rad-environments will automatically be way more efficnent than a rad-hardened one.
- shagie 4y agoWhat set of processors would your recommend putting in Perseverance with a 110 watt power budget? Or on JWST with its heat dissipation requirements?
- tlb 4y agoYes, but you have to compare the complete state of each computer for this to work, including every bit of memory & cache. You can't have much RAM if you're planning to compare them in a few milliseconds. If you try to do this without comparing the whole state, and only comparing the outputs of some control algorithm between the computers, one of them could have some internal state corrupted and remain unnoticed for a long time, long enough for other corruptions to happen on the other computers, and then you have no straightforward way to figure out which one to trust and which to reset.