Benchmark one case, but rerun many tests to catch regressions
lemire · x · 2026-07-29
A simple but important reminder: when optimizing one case, you can easily make another case worse.
- The author urges rerunning lots of benchmarks to understand the global effect of any optimization.
- Do not blindly trust an AI’s recommendation.
- Ask for detailed benchmarks instead of relying on a single headline metric.
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