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Severe memory leaks on Amazon AWS Linux platform #2646

spudthorpe opened this issue Oct 20, 2017 · 1 comment


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commented Oct 20, 2017

Please see thread:

PyMC3 3.2 and 3.1, Python 3.5.2, Theano 0.9.0, Ubuntu 16.04

Tried running the notebook at

on an AWS Ubuntu instance. The python process allocated about 100MB of memory per second; allocated memory kept growing until the machine was effectively dead from memory swapping. The notebook exhausted memory on 61GB, 122GB, and 244GB instances. I also saw similar behavior on Amazon Linux but primarily investigated on Ubuntu. I tried the HDF5 backend and it did not make a difference.

The same setup worked fine on an AWS Windows instance.

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commented Jan 13, 2018

Hi @spudthorpe, could you try again from pymc3 master? @ferrine removed a few theano copy and the issue might be fixed now.

@twiecki twiecki closed this Dec 22, 2018

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