Set OMP_NUM_THREADS for flow2supera - #94
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When flow2supera runs DBSCAN, it spawns a bunch of threads. The threading doesn't seem to benefit performance, and it greatly limits the number of parallel flow2supera processes that can be run before everything slows to a crawl. Setting `OMP_NUM_THREADS` to 1 doesn't slow down flow2supera much (if it all) in my experience, and allows every core to be used efficiently for its own flow2supera process.
mjkramer
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July 17, 2026 02:47
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When flow2supera runs DBSCAN, it spawns a bunch of threads. The threading doesn't seem to benefit performance, and it greatly limits the number of parallel flow2supera processes that can be run before everything slows to a crawl. Setting
OMP_NUM_THREADSto 1 doesn't slow down flow2supera much (if it all) in my experience, and allows every core to be used efficiently for its own flow2supera process.