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Fast Downward

Fast Downward is a domain-independent classical planning system.

Copyright 2003-2022 Fast Downward contributors (see below).

For further information:

IPC 2023 Apptainer Recipes

The optimal configuration of our planner requires LP support. To build the Apptainer recipe, you need an installer for CPLEX at a location available under $IPC_THIRD_PARTY. We use version 22.1.1 for the competition, but in theory any version of CPLEX should be fine. For the Apptainer recipe to work out of the box, the installer needs to be named as follows: cplex_studio2211.linux_x86_64.bin

Tested software versions

This version of Fast Downward has been tested with the following software versions:

OS Python C++ compiler CMake
Ubuntu 22.04 3.10 GCC 11, GCC 12, Clang 14 3.22
Ubuntu 20.04 3.8 GCC 10, Clang 12 3.16
macOS 12 3.10 AppleClang 14 3.24
macOS 11 3.8 AppleClang 13 3.24
Windows 10 3.8 Visual Studio Enterprise 2019 (MSVC 19.29) and 2022 (MSVC 19.31) 3.22

We test LP support with CPLEX 12.9, SoPlex 3.1.1 and Osi 0.107.9. On Ubuntu, we test both CPLEX and SoPlex. On Windows, we currently only test CPLEX, and on macOS, we do not test LP solvers (yet).

Contributors

The following list includes all people that actively contributed to Fast Downward, i.e. all people that appear in some commits in Fast Downward's history (see below for a history on how Fast Downward emerged) or people that influenced the development of such commits. Currently, this list is sorted by the last year the person has been active, and in case of ties, by the earliest year the person started contributing, and finally by last name.

  • 2003-2022 Malte Helmert
  • 2008-2016, 2018-2022 Gabriele Roeger
  • 2010-2022 Jendrik Seipp
  • 2010-2011, 2013-2022 Silvan Sievers
  • 2012-2022 Florian Pommerening
  • 2013, 2015-2022 Salomé Eriksson
  • 2015, 2021-2022 Thomas Keller
  • 2018-2022 Patrick Ferber
  • 2021-2022 Clemens Büchner
  • 2021-2022 Dominik Drexler
  • 2022 Remo Christen
  • 2016-2020 Cedric Geissmann
  • 2017-2020 Guillem Francès
  • 2018-2020 Augusto B. Corrêa
  • 2020 Rik de Graaff
  • 2015-2019 Manuel Heusner
  • 2017 Daniel Killenberger
  • 2016 Yusra Alkhazraji
  • 2016 Martin Wehrle
  • 2014-2015 Patrick von Reth
  • 2009-2014 Erez Karpas
  • 2014 Robert P. Goldman
  • 2010-2012 Andrew Coles
  • 2010, 2012 Patrik Haslum
  • 2003-2011 Silvia Richter
  • 2009-2011 Emil Keyder
  • 2010-2011 Moritz Gronbach
  • 2010-2011 Manuela Ortlieb
  • 2011 Vidal Alcázar Saiz
  • 2011 Michael Katz
  • 2011 Raz Nissim
  • 2010 Moritz Goebelbecker
  • 2007-2009 Matthias Westphal
  • 2009 Christian Muise

History

The current version of Fast Downward is the merger of three different projects:

  • the original version of Fast Downward developed by Malte Helmert and Silvia Richter
  • LAMA, developed by Silvia Richter and Matthias Westphal based on the original Fast Downward
  • FD-Tech, a modified version of Fast Downward developed by Erez Karpas and Michael Katz based on the original code

In addition to these three main sources, the codebase incorporates code and features from numerous branches of the Fast Downward codebase developed for various research papers. The main contributors to these branches are Malte Helmert, Gabi Röger and Silvia Richter.

License

Fast Downward is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.

Fast Downward is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

The third party software OSI shipped within this repository is
licensed under the Eclipse Public License version 2.0 (EPL 2.0).