PickVidsNew computers don't speed up old code
推荐理由
This great video [0] demonstrates how CPU performance has only increased 1.5-2x over the past 15(!) years when executing extremely branchy code.
说明
这是2025年由Matthias random stuff发布的一部讲解，主题归在Software performance & optimization。它讲的是cpu performance over time这一支里的具体问题，而不是把整个领域扫一遍。适合已经能看懂基本术语、想继续往下走的人。内容上可以概括成：Matthias Wandel tests old and new code on a range of PCs, including a new mini PC, to measure how much faster modern hardware really is. He also shows optimization techniques such as branchless code, with benchmark programs on GitHub.这些读者给出的理由，核心是：Used as evidence that CPU speed for branchy, dependent code has improved only modestly in 15-20 years, so software optimization matters.讲法不绑某一条新闻，过几年仍然可以当材料看。从2025年到2025年，有3位不同的读者在3个不同月份把它推荐出来，其中明确叫别人去看的有1次。适合用一集把一个概念补上的人。抓住它用的那个图像或类比，比背公式重要。如果已经会了基本定义，就把注意力放在它怎么把cpu performance over time变成能跟着复述的例子。
视频信息
- 频道
- Matthias random stuff
- 时长
- 19 分 25 秒
- 发布年份
- 2025
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