20 lines
838 B
Markdown
20 lines
838 B
Markdown
# Cores that don’t count
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- **期号**: SRE Weekly Issue #273（2021-06-06）
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- **作者**: Peter H. Hochschild, Paul Turner, Jeffrey C. Mogul, Rama Govindaraju, Parthasarathy Ranganathan, David E. Culler, and Amin Vahdat — Google
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- **链接**: https://sigops.org/s/conferences/hotos/2021/papers/hotos21-s01-hochschild.pdf
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## 简介
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This academic paper explains Google’s efforts toward identifying “mercurial” CPU coores — cores that make erroneous computations.
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> […] we observe on the order of a few mercurial cores per several thousand machines […]
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This one blew my mind:
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> A deterministic AES mis-computation, which was “selfinverting”: encrypting and decrypting on the same core yielded the identity function, but decryption elsewhere yielded gibberish.
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## 正文
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> ⚠️ 抓取失败：non-html resource
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