Install fails on Ubuntu 18 (VmWare VM)

[nadia...@gmail.com]

I have a VM with Ubuntu 18, installed Python 3.7 and PyCharm CE

Then I tried to install ANNarchy. At first it complained of some packages missing (Cython, sympy, etc)

I did that manually (is it a way to detect prerequisites?)

Anyways... Eventually failed like this:

Cython is installed. 'which cython' returns the path.

Reinstalling ANNarchy is kind of a (black) joke because is what I want to do

I wonder if it has something to do with CUDA as it's not accessible from VMs

Hope someone has a solution

BR

Nadia

[Julien Vitay]

Hi,

you need to install the Python development files (python-dev or python3-dev on ubuntu). 

Normally pip installs the Python dependencies, but not the system libraries like python-dev or gcc. When you install from source, there is a requirements.txt file that can be used to install the Python dependencies with pip.

Best

Julien 

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[nadia...@gmail.com]

It's already installed, apparently (sudo apt install python3-dev)

Reading package lists... Done

Building dependency tree       

Reading state information... Done

python3-dev is already the newest version (3.6.7-1~18.04).

python3-dev set to manually installed.

0 upgraded, 0 newly installed, 0 to remove and 303 not upgraded.

BR

Nadia

[Helge Dinkelbach]

Hi,

in the past, CUDA devices weren't supported well in VMs but I didn't tried it recently. However CUDA is not mandatory for ANNarchy to run.

One could test:

python3-config --includes --libs

in order to check that the correct paths are set, as the "Python.h" was not found in the error message in your screenshot.

Best regards,

Helge

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[Julien Vitay]

On a fresh VM install of Ubuntu 18.10, the following worked for me:

# Basic compiler
sudo apt install g++ python3-dev build-essential

# Python packages
sudo apt install python3-numpy python3-scipy python3-matplotlib python3-sympy python3-lxml python3-pip

# Cython 3 (not 2!)

sudo apt install cython3

# Install ANNarchy from pip3 (without dependencies, otherwise it installs numpy and co again)

pip3 install ANNarchy --no-deps

Could it be that you installed cython and not cython3?

I should perhaps add these commands to the doc or to the readme.

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