迈向精确快速的求和运算(2022)
本文探讨了在数值计算中实现既准确又快速的求和算法。针对浮点数求和过程中常见的精度损失问题,作者提出了新的算法设计与优化策略,在保证高精度的同时显著提升计算速度。研究结合理论分析与实验验证,为高性能科学计算、机器学习等领域中的大规模数据求和提供了有效的解决方案。
本文探讨了在数值计算中实现既准确又快速的求和算法。针对浮点数求和过程中常见的精度损失问题,作者提出了新的算法设计与优化策略,在保证高精度的同时显著提升计算速度。研究结合理论分析与实验验证,为高性能科学计算、机器学习等领域中的大规模数据求和提供了有效的解决方案。
A state-designed worm from 2005 called Fast16 sat undetected on VirusTotal for nearly a decade. It intercepted executable files at the kernel level and silently altered floating-point calculations in high-precision engineering software like LS-DYNA, which was used in Iran's nuclear weapons research. Unlike Stuxnet, Fast16 received little public attention for over twenty years.
Paul Graham reports that Y Combinator startups now have over 75% of their code written by AI, a threshold crossed at least one to two years ago. This parallels a similar transformation at Google, where AI-written code went from 0% to 75% in about two years.
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A compromised version of the LiteLLM Python package (version 1.82.8) was briefly available on PyPI, capable of exfiltrating sensitive credentials like SSH keys and cloud secrets. The malicious package affected any project that depended on LiteLLM, though it was only available for about an hour before discovery.
A supply chain attack has compromised the popular npm axios HTTP client library with 300 million weekly downloads. Malicious versions install a remote access trojan, though some users may have avoided infection through version pinning or older installations. Security experts warn this is a live compromise affecting one of npm's most depended-on packages.