Lab and Downward Lab
====================
**Lab** is a Python package for evaluating solvers on benchmark sets.
Experiments can run on a single machine or on a computer cluster. The
package also contains code for parsing results and creating reports.
The **Downward Lab** Python package facilitates running experiments for
the `Fast Downward <http://www.fast-downward.org>`_ planning system. It
uses the generic experimentation package **Lab**. Currently, Lab and
Downward Lab are distributed together.
**Code**: https://github.com/aibasel/lab
**Documentation**: https://lab.readthedocs.io
**Cite**: please cite Downward Lab by using
::
@Misc{seipp-et-al-zenodo2017,
author = "Jendrik Seipp and Florian Pommerening and
Silvan Sievers and Malte Helmert",
title = "{Downward} {Lab}",
publisher = "Zenodo",
year = "2017",
howpublished = "\url{https://doi.org/10.5281/zenodo.790461}"
}
Install Lab
-----------
Lab requires Python 3.7+ and Linux (e.g., Ubuntu). We recommend installing
Lab in a `Python virtual environment
<https://docs.python.org/3/tutorial/venv.html>`_. This has the advantage
that there are no modifications to the system-wide configuration, and that
you can create multiple environments with different Lab versions (e.g.,
for different papers) without conflicts::
# Install required packages, including virtualenv.
sudo apt install python3 python3-venv
# Create a new directory for your experiments.
mkdir experiments-for-my-paper
cd experiments-for-my-paper
# If PYTHONPATH is set, unset it to obtain a clean environment.
unset PYTHONPATH
# Create and activate a Python virtual environment for Lab.
python3 -m venv --prompt my-paper .venv
source .venv/bin/activate
# Install Lab in the virtual environment.
pip install -U pip wheel
pip install lab # or preferably a specific version with lab==x.y
# Store installed packages and exact versions for reproducibility.
# Ignore pkg-resources package (https://github.com/pypa/pip/issues/4022).
pip freeze | grep -v "pkg-resources" > requirements.txt
Please note that before running an experiment script you need to
activate the virtual environment with::
source .venv/bin/activate
We recommend clearing the ``PYTHONPATH`` variable before activating the
virtual environment.
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