===== Python ====

Versions of Python available via modules:

  - python/2.7.14
  - python/3.6.3
  - python/3.7.2
  - python/3.7.12
  - python/3.8.12
  - python/3.9.10

==== Python virtualenv ====

[[https://virtualenv.pypa.io/en/stable|Virtualenv]] is a tool to create isolated Python environments.

=== Python 2.7.14 virtualenv ===

Create a virtual environment for "machine-learning":

<code>
module load gnu/5.4.0
module load python/2.7.14
module load cuda/8.0.61.2
module list
which python
python2 -m pip install --user --upgrade pip
python2 -m pip install --user virtualenv
mkdir -p "$HOME/local/tools/python/2.7.14/virtualenv/machine-learning"
python2 -m virtualenv "$HOME/local/tools/python/2.7.14/virtualenv/machine-learning"
</code>

Activate "machine-learning" virtual environment:

<code>
source "$HOME/local/tools/python/2.7.14/virtualenv/machine-learning/bin/activate"
</code>

Install packages in "machine-learning" virtual environment:

<code>
pip install --upgrade opencv-python Pillow sklearn h5py scikit-image cython easydict
</code>

Deactivate "machine-learning" virtual environment:

<code>
deactivate
</code>

=== Python 3.6.3 virtualenv ===

Available virtual environments for Python 3.6.3:
  * opencv
  * tensorflow
  * tensorflow-gpu

== Site installation ==

Activate "opencv" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3

source '/hpc/share/tools/python/3.6.3/virtualenv/opencv/bin/activate'
</code>

----

Activate "tensorflow" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3

source '/hpc/share/tools/python/3.6.3/virtualenv/tensorflow/bin/activate'
</code>

----

Activate "tensorflow-gpu" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3
module load cuda/9.0.176
module load cudnn/7.1.1

source '/hpc/share/tools/python/3.6.3/virtualenv/tensorflow-gpu/bin/activate'
</code>

----

Deactivate the virtual environment:

<code>
deactivate
</code>

== User installation ==

Create "opencv" virtual environment (just once):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-opencv
</code>

Update "opencv" virtual environment (every time you want to update):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-opencv
</code>

Activate "opencv" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3

source "$HOME/local/tools/python/3.6.3/virtualenv/opencv/bin/activate"
</code>

----

Create "tensorflow" virtual environment (just once):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-tensorflow
</code>

Update "tensorflow" virtual environment (every time you want to update):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-tensorflow
</code>

Activate "tensorflow" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3

source "$HOME/local/tools/python/3.6.3/virtualenv/tensorflow/bin/activate"
</code>

----

Create "tensorflow-gpu" virtual environment (just once):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-tensorflow-gpu
</code>

Update "tensorflow-gpu" virtual environment (every time you want to update):

<code>
module load gnu/5.4.0
module load python/3.6.3

hpc-make-virtualenv-tensorflow-gpu
</code>

Activate "tensorflow-gpu" virtual environment:

<code>
module load gnu/5.4.0
module load python/3.6.3
module load cuda/9.0.176
module load cudnn/7.1.1

source '/hpc/share/tools/python/3.6.3/virtualenv/tensorflow-gpu/bin/activate'
</code>

----

Deactivate the virtual environment:

<code>
deactivate
</code>