Further peformance improvements for source deblending - #2413
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larrybradley merged 5 commits intoSep 3, 2026
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This PR batches every per-source stage of deblending (source statistics, marker construction, the watershed contrast loop, and the label write-out) over chunks of sources in compiled, GIL-releasing kernels that share one packed cutout buffer, producing results identical to before. Fields of many small sources deblend about 1.7x faster serially (roughly 50x faster than 3.0) and now scale with n_threads (2.3x at 8 threads instead of a slowdown), while large-source performance is unchanged.