software performance 4
- Compressed bitmaps are not always better than uncompressed ones; there are many tradeoffs.
- The SSE4.2 string-comparison instructions on x86 are slow compared to alternatives.
Daniel Lemire
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
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What Daniel Lemire says most about
mathematics 3
- Mathematicians who continue working without AI should be seen as practicing an art form rather than research.
- AI will increasingly produce mathematical proofs, just as it already writes most code.
AI alignment 2
- Less technology and less wealth increase the risk of human extinction, rather than reduce it.
- People who believe AI poses an existential risk tend to hold a totalitarian ideology that requires universal agreement to work.
hiring 2
- Most people who complete a PhD today will not land a tenure-track or tenured position, and the odds keep shrinking.
- Academic publishing functions mainly to sort people for jobs rather than to produce useful knowledge.
semiconductors 2
- Subnormal floating-point numbers remain a real performance cost on Intel processors, but not on AMD or ARM processors.
- CPU performance keeps improving quickly rather than stagnating.