<p>The LAMMPS “version” is the date when it was released, such as 1 May
2010. LAMMPS is updated continuously. Whenever we fix a bug or add a
feature, we release it immediately, and post a notice on <a class="reference external" href="http://lammps.sandia.gov/bug.html">this page of the WWW site</a>. Each dated copy of LAMMPS contains all the
features and bug-fixes up to and including that version date. The
version date is printed to the screen and logfile every time you run
LAMMPS. It is also in the file src/version.h and in the LAMMPS
directory name created when you unpack a tarball, and at the top of
the first page of the manual (this page).</p>
<ul class="simple">
<li>If you browse the HTML doc pages on the LAMMPS WWW site, they always
describe the most current version of LAMMPS.</li>
<li>If you browse the HTML doc pages included in your tarball, they
describe the version you have.</li>
<li>The <a class="reference external" href="Manual.pdf">PDF file</a> on the WWW site or in the tarball is updated
about once per month. This is because it is large, and we don’t want
it to be part of every patch.</li>
<li>There is also a <a class="reference external" href="Developer.pdf">Developer.pdf</a> file in the doc
directory, which describes the internal structure and algorithms of
LAMMPS.</li>
</ul>
<p>LAMMPS stands for Large-scale Atomic/Molecular Massively Parallel
Simulator.</p>
<p>LAMMPS is a classical molecular dynamics simulation code designed to
run efficiently on parallel computers. It was developed at Sandia
National Laboratories, a US Department of Energy facility, with
funding from the DOE. It is an open-source code, distributed freely
under the terms of the GNU Public License (GPL).</p>
<p>The primary developers of LAMMPS are <a class="reference external" href="http://www.sandia.gov/~sjplimp">Steve Plimpton</a>, Aidan
Thompson, and Paul Crozier who can be contacted at
sjplimp,athomps,pscrozi at sandia.gov. The <a class="reference external" href="http://lammps.sandia.gov">LAMMPS WWW Site</a> at
<a class="reference external" href="http://lammps.sandia.gov">http://lammps.sandia.gov</a> has more information about the code and its
uses.</p>
<hr class="docutils" />
<p>The LAMMPS documentation is organized into the following sections. If
you find errors or omissions in this manual or have suggestions for
useful information to add, please send an email to the developers so
we can improve the LAMMPS documentation.</p>
<p>Once you are familiar with LAMMPS, you may want to bookmark <a class="reference internal" href="Section_commands.html#comm"><span class="std std-ref">this page</span></a> at Section_commands.html#comm since
it gives quick access to documentation for all LAMMPS commands.</p>
<p><a class="reference external" href="Manual.pdf">PDF file</a> of the entire manual, generated by
<li class="toctree-l2"><a class="reference internal" href="Section_start.html#what-s-in-the-lammps-distribution">2.1. What’s in the LAMMPS distribution</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_start.html#making-lammps">2.2. Making LAMMPS</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_start.html#making-lammps-with-optional-packages">2.3. Making LAMMPS with optional packages</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_start.html#building-lammps-via-the-make-py-tool">2.4. Building LAMMPS via the Make.py tool</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_start.html#building-lammps-as-a-library">2.5. Building LAMMPS as a library</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_accelerate.html#general-strategies">5.2. General strategies</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_accelerate.html#packages-with-optimized-styles">5.3. Packages with optimized styles</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_accelerate.html#comparison-of-various-accelerator-packages">5.4. Comparison of various accelerator packages</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#tip3p-water-model">6.7. TIP3P water model</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#tip4p-water-model">6.8. TIP4P water model</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#spc-water-model">6.9. SPC water model</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#coupling-lammps-to-other-codes">6.10. Coupling LAMMPS to other codes</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#calculating-a-diffusion-coefficient">6.22. Calculating a diffusion coefficient</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#using-chunks-to-calculate-system-properties">6.23. Using chunks to calculate system properties</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_howto.html#setting-parameters-for-the-kspace-style-pppm-disp-command">6.24. Setting parameters for the <code class="docutils literal"><span class="pre">kspace_style</span> <span class="pre">pppm/disp</span></code> command</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_modify.html#submitting-new-features-for-inclusion-in-lammps">10.15. Submitting new features for inclusion in LAMMPS</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="Section_python.html">11. Python interface to LAMMPS</a><ul>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#overview-of-running-lammps-from-python">11.1. Overview of running LAMMPS from Python</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#overview-of-using-python-from-a-lammps-script">11.2. Overview of using Python from a LAMMPS script</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#building-lammps-as-a-shared-library">11.3. Building LAMMPS as a shared library</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#installing-the-python-wrapper-into-python">11.4. Installing the Python wrapper into Python</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#extending-python-with-mpi-to-run-in-parallel">11.5. Extending Python with MPI to run in parallel</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#testing-the-python-lammps-interface">11.6. Testing the Python-LAMMPS interface</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#using-lammps-from-python">11.7. Using LAMMPS from Python</a></li>
<li class="toctree-l2"><a class="reference internal" href="Section_python.html#example-python-scripts-that-use-lammps">11.8. Example Python scripts that use LAMMPS</a></li>
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