# \#performance

**URL:** https://www.rubin.community/tag/performance/137.md

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## [Dependencies and other issues in using DM code in quasi-real-time processes](https://www.rubin.community/t/dependencies-and-other-issues-in-using-dm-code-in-quasi-real-time-processes/903)

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**Author:** [@gpdf](https://www.rubin.community/u/gpdf)\
**Replies:** 3\
**Last updated:** [July 7, 2016, 1:44am UTC](https://www.rubin.community/t/dependencies-and-other-issues-in-using-dm-code-in-quasi-real-time-processes/903 "2016-07-07T01:44:01Z")

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In a Confluence discussion on the WCS redesign I asked about dependencies of the proposed code in the light of its possible use in the TCS. In reply, @parejkoj properly noted that I was taking the discussion away from i…

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## [Memory contiguity and python execution speed](https://www.rubin.community/t/memory-contiguity-and-python-execution-speed/884)

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**Author:** [@parejkoj](https://www.rubin.community/u/parejkoj)\
**Replies:** 16\
**Last updated:** [July 6, 2016, 3:07pm UTC](https://www.rubin.community/t/memory-contiguity-and-python-execution-speed/884 "2016-07-06T15:07:52Z")

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We have a number of algorithms implemented as for loops in python (e.g. the star selectors) that could potentially be done as vectorized numpy expressions. These loops are potentially quite slow, but are necessary becaus…