# Multithreading in extension

**URL:** <https://discourse.slicer.org/t/multithreading-in-extension/6941>\
**Category:** Development\
**Tags:** multithreading\
**Created:** [May 27, 2019, 6:21pm UTC](https://discourse.slicer.org/t/multithreading-in-extension/6941 "2019-05-27T18:21:44Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [May 30, 2019, 7:43pm UTC](https://discourse.slicer.org/t/multithreading-in-extension/6941/9 "2019-05-30T19:43:41Z")

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For future reference, if you must run time-consuming operation in the Slicer process then you can run it as a [CLI module, which can be implemented in Python](https://discourse.slicer.org/t/how-to-run-python-based-cli-modules/4627).

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