Installation

Nemo is written in Python (3.6+), and requires the following additional modules to be installed (currently used versions are given in brackets, later versions also probably work):

• numpy (1.13.3)

• scipy (1.3.0)

• matplotlib (2.1.1)

• astLib (0.11.7)

• pixell (0.6.3 or git version)

• Pillow (5.1.0)

• astropy (4.0)

• Cython (0.24.1)

• PyYAML (3.12)

• CCL (2.1 or later)

• mpi4py (3.0.0)

• colorcet (1.0.0; https://github.com/bokeh/colorcet/releases)

The latest tagged version of Nemo can be installed using pip:

pip install nemo-sz

Note that you will need to have cython and numpy installed already (for the moment). Other dependencies will be installed by pip, except for pyccl and mpi4py.

You may also install using the standard setup.py script, e.g., as root:

sudo python setup.py install

Alternatively,

python setup.py install --user

will install nemo under $HOME/.local (on Ubuntu), and in some other default location on Mac.

You can also use the --prefix option, e.g.,

python setup.py install --prefix=$HOME/local

and then add $HOME/local/bin to $PATH, and e.g., $HOME/local/lib/python3.6/site-packages to $PYTHONPATH (adjust the path according to your Python version number).

export PATH=$HOME/local/bin:$PATH
export PYTHONPATH=$HOME/local/lib/python3.6/site-packages:$PYTHONPATH

If Nemo has installed correctly, then you should find its command line tools are available, for example,

nemo -h

should display a helpful message about the command-line options for the main nemo command.