# \#nupic-core

**URL:** https://discourse.numenta.org/tag/nupic-core/145.md

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## [Discussion on compatibility of various Linux build environments](https://discourse.numenta.org/t/discussion-on-compatibility-of-various-linux-build-environments/4386)

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**Author:** [@Paul\_Lamb](https://discourse.numenta.org/u/Paul_Lamb)\
**Replies:** 8\
**Last updated:** [September 8, 2018, 7:27pm UTC](https://discourse.numenta.org/t/discussion-on-compatibility-of-various-linux-build-environments/4386 "2018-09-08T19:27:16Z")

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I’m curious what are the ideal/ recommended Linux build environments that folks are using to build NuPIC core from source, and which have had problems. I’ve lately been experimenting with building Docker images for armh…

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## [Python 3 Migration: \_paramTypeCache not found](https://discourse.numenta.org/t/python-3-migration-paramtypecache-not-found/3362)

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**Author:** [@chhenning](https://discourse.numenta.org/u/chhenning)\
**Replies:** 7\
**Last updated:** [February 23, 2018, 9:03pm UTC](https://discourse.numenta.org/t/python-3-migration-paramtypecache-not-found/3362 "2018-02-23T21:03:25Z")

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Again working on the core\_encoders\_demo.py and true for many other engine relation python code. I keep getting the error: RuntimeError: Attribute \_paramTypeCache not found I understand that the \_paramTypeCache is send …

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## [Python 3 Migration: encoder attribute](https://discourse.numenta.org/t/python-3-migration-encoder-attribute/3360)

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**Author:** [@chhenning](https://discourse.numenta.org/u/chhenning)\
**Replies:** 2\
**Last updated:** [January 24, 2018, 2:27am UTC](https://discourse.numenta.org/t/python-3-migration-encoder-attribute/3360 "2018-01-24T02:27:09Z")

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I’m working myself through the examples and I’m stuck in core\_encoders\_demo.py. In the function createNetwork() we are creating two regions: # C++ consumptionSensor = network.addRegion('consumptionSensor', 'ScalarS…

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## [Installing NuPIC on Ubuntu 16.04.3 LTS (GNU/Linux 4.4.0-96-generic x86\_64)](https://discourse.numenta.org/t/installing-nupic-on-ubuntu-16-04-3-lts-gnu-linux-4-4-0-96-generic-x86-64/3043)

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**Author:** [@bkutt](https://discourse.numenta.org/u/bkutt)\
**Replies:** 22\
**Last updated:** [November 21, 2017, 3:33pm UTC](https://discourse.numenta.org/t/installing-nupic-on-ubuntu-16-04-3-lts-gnu-linux-4-4-0-96-generic-x86-64/3043 "2017-11-21T15:33:00Z")

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Trying to get NuPIC installed on the machine mentioned above. It’s a shared machine, so I’m installing under my home account directory without root access. I’ve set up my own installation of Python 2.7.12 under my home …