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Cosmic rays were a theory in 70's era hardware for failures that ended up being proven to be particles emitted by the ceramic packaging itself. (Modern bitflip
by eichin 3y ago
Cosmic rays were a theory in 70's era hardware for failures that ended up being proven to be particles emitted by the ceramic packaging itself. (Modern bitflips are have more to do with component sizes several orders of magnitude smaller.) (edit: not saying that cosmic rays aren't a problem now, just that they only became a problem as chip element sizes shrunk, and they're probably not the only source.)
Also, you can definitely stop cosmic rays, that was part of how they eliminated them as the source.
- Supermancho 3y ago> Also, you can definitely stop cosmic rays As I understand it, bit flipping in RAM is mitigated by error correction, via auxilliary and redundant bits. https://en.wikipedia.org/wiki/Dynamic_random-access_memory#Row_and_column_redundancy https://en.wikipedia.org/wiki/Dynamic_random-access_memory#R...
- vitus 3y agoECC RAM is for the most part relegated to server-grade components, for what it's worth. So your phone, your laptop, your router? Almost certainly not using any ECC RAM, unless you've gone out of your way to do so.
- buildbot 3y agoI swear there was a google paper about using a DC as a really bad particle detector, but I can’t find :/