Codex 5.3 after optimizing a principal component analysis implementation.
Instead, nearly 90% of the runtime was attributed to the most mundane line in the entire library:
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I continued prompting Claude Code in order to make the key bindings more useful and a few things more.，更多细节参见91视频
At capacity 1, every point gets its own cell, and the tree subdivides as deeply as possible. At capacity 10, many points coexist in the same node, and the tree stays shallow.
Unexpected errors should use ERROR or FATAL log messages because they indicate a real problem. At best, they indicate an incorrect assumption. At worst, there’s a serious bug somewhere.