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Editorial Team
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Asked: 2026-05-28T03:02:08+00:00

I am using IPython 0.10.2 and Python 2.7 right now. I start one ipcontroller

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I am using IPython 0.10.2 and Python 2.7 right now. I start one ipcontroller and 20 ipengines on my cluster. The code structure is very simple. I just use MultiEngineClient.execute() methods and MultiEngineClient dictionary interface (e.g., mec[‘a’] = b) . My current application needs to run nearly two days. However, after 10 hours running, I find that ipcontroller has used 3.1 GB memory. I do use MultiEngineClient.clear_properties(). But it never releases any memory. Does anyone know how to release the memory of ipcontroller ?

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1 Answer

  1. Editorial Team

    Unfortunately, it may not be possible to free memory effectively in the Controller in IPython 0.10, but the MultiEngineClient.clear_pending_results() method may help.

    The controller in 0.11-0.12 can use a database (sqlite or mongodb) to store results, and has been seen to run for a long time, with gigabytes of throughput without unreasonable long-term growth.

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