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<title>ONELAB: Open Numerical Engineering LABoratory</title>
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<h1 class="short">ONELAB</h1>
<h1>Open Numerical Engineering LABoratory
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<div><span style="white-space:nowrap"><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Inductor"><!--
--><img width="25%" src="small_inductor.png"></a><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Magnetometer"><!--
--><img width="25%" src="small_magnetometer.png"></a><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Electric-machines"><!--
--><img width="25%" src="small_machines.png"></a><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Magnetodynamics-with-cohomology-conditions"><!--
--><img width="25%" src="small_indheat.png"></a><!--
--></span><br><span style="white-space:nowrap"><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Waveguides"><!--
--><img width="25%" src="small_waveguides.png"></a><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Electromechanical-relay"><!--
--><img width="25%" src="small_relay.png"></a><!--
--><a href="https://gitlab.onelab.info/doc/models/wikis/Bloch-modes-in-periodic-waveguides"><!--
--><img width="25%" src="small_bloch.png"></a><!--
--><a href="http://gitlab.onelab.info/doc/models/wikis/Acoustic-scattering"><!--
--><img width="25%" src="small_acoustic.png"></a><!--
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<p>
ONELAB is an open-source, lightweight interface to finite element software. It
is completely free: the default ONELAB software bundle contains the mesh
generator <a href="http://gmsh.info">Gmsh</a> and the finite element solver
<a href="http://getdp.info">GetDP</a>. Many other codes (free or not) can be
easily interfaced as well.
</p>
<h2>Getting started</h2>
<ol><a name="Download"></a>
<li>Download the ONELAB software bundle:
<ul>
<li>Desktop version for <a href="http://onelab.info/files/onelab-Windows64.zip">Windows</a>
(<a href="http://onelab.info/files/onelab-Windows32.zip">32 bit</a>),
<a href="http://onelab.info/files/onelab-Linux64.zip">Linux</a>
(<a href="http://onelab.info/files/onelab-Linux32.zip">32 bit</a>) and
<a href="http://onelab.info/files/onelab-MacOSX.dmg">MacOS</a>
<li>Mobile version for <a href="https://play.google.com/store/apps/details?id=org.geuz.onelab">Android</a> and
<a href="https://itunes.apple.com/us/app/onelab/id845930897">iOS</a>
<li><a href="http://onelab.info/files/onelab-source.zip">Source code</a>
</ul>
<li>Launch the app <img src="http://geuz.org/gmsh/gallery/icon.png" height=20px>
<li>Open a model:
<ul>
<li>Desktop version: go to the <code>File/Open</code> menu and select a
GetDP <code>.pro</code> file,
e.g. <code>models/Magnetometer/magnetometer.pro</code>
<li>Mobile version: select one of the preloaded models
</ul>
<li>Press <code>Run</code>
<li>... then explore
<a href="http://gitlab.onelab.info/doc/models/wikis">other models</a>, or
learn how to create your own with
<a href="http://gitlab.onelab.info/doc/tutorials/wikis">the tutorials</a>
</ol>
<h2>Additional information</h2>
<p>
ONELAB can interface finite element and related software (<em>ONELAB
clients</em>) in two ways:
</p>
<ol>
<li>By directly embedding the ONELAB C++ library or the ONELAB Python
module. This is what <a href="http://getdp.info">GetDP</a> (a finite element
solver for electromagnetism, heat transfer, acoustics and generic
PDEs), <a href="http://gmsh.info">Gmsh</a> (a mesh generator with built-in
CAD engine and post-processor) and the ONELAB mobile app do. Any C++ and
Python code can do the same.
<li>By preprocessing the input files of any software. The different steps of a
simulation (meshing, solving, post-processing) are then controlled by a
python script, which dynamically regenerates the input
files. <a href="https://www.csc.fi/web/elmer">Elmer</a>,
<a href="https://www.openfoam.com/">OpenFOAM</a>,
<a href="https://www.code-aster.org/">Code_Aster</a>,
<a href="https://www.3ds.com/fr/produits-et-services/simulia/produits/abaqus">Abaqus</a>
or <a href="http://www.calculix.de">CalculiX</a> can for example be readily
interfaced this way.
</ol>
<p>
The ONELAB interface allows to call such clients and have them share
parameters and modeling information. The implementation is based on a
client-server model, with a server-side database, an (optional) graphical
front-end, and local or remote clients communicating in-memory or through
TCP/IP sockets. Contrary to most solver interfaces, the ONELAB
server has no <em>a priori</em> knowledge about any specifics (input file
format, syntax, ...) of the clients. This is made possible by having any
simulation preceded by an analysis phase, during which the clients are asked
to upload their parameter set to the server. The issues of completeness and
consistency of the parameter sets are completely dealt with on the client
side: the role of ONELAB is limited to data centralization, modification and
re-dispatching.
</p>
<p>
See the <a href="http://gitlab.onelab.info/doc/tutorials/wikis">tutorials</a>
for examples.
</p>
<h2>Sponsors</h2>
<p>
The ONELAB project was funded by the Walloon Region under
<a href="http://recherche-technologie.wallonie.be/projets/index.html?IDD=17018">WIST3
grant n° 1017086</a> and <em>Fonds de maturation</em> grant n° 1217742
(AWE), and was sponsored by <a href="http://www.gdtech.eu">GDTech</a>
and <a href="http://www.audaxis.com">Audaxis</a>. Additional funding has
been provided by <a href="http://www.belspo.be">the Belgian Science
Policy</a> under grant IAP P7/02.
</p>
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