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Making np.searchsorted up to 25× Faster in NumPy 2.5

NumPy 2.5 implements a vectorized binary-search algorithm for np.searchsorted, applying branch elimination, batching, and cache‑friendly layouts to achieve up to 25× speedup over the previous pure‑Python/logarithmic approach. The optimization benefits core scientific libraries such as SciPy and scikit‑learn and aligns with the Python Array API Standard for parallel implementations.

Background

np.searchsorted is a fundamental binary‑search utility used for histogram binning and interval lookups across the Python scientific stack. Optimizing it through vectorized primitives can yield large gains for downstream libraries that repeatedly invoke the operation.

Source
Lobsters
Published
Oct 11, 2026 at 07:25 AM
Score
7.0 / 10