Editing Sandia National Laboratories (section)

== Open-source software ==
[[File:Solar panel testing, Sandia National Laboratories.jpg|thumb|Solar panel testing]]

In the 1970s, the Sandia, Los Alamos, Air Force Weapons Laboratory Technical Exchange Committee initiated the development of the [[SLATEC]] library of mathematical and statistical routines, written in [[FORTRAN 77]].

Today, Sandia National Laboratories is home to several [[open-source software]] projects:

* FCLib (Feature Characterization Library) is a library for the identification and manipulation of coherent regions or structures from spatio-temporal data.<ref name="fclib">
{{cite web
 |title       = Main Page&nbsp;– FCLib
 |publisher   = Sandia National Laboratories
 |url         = http://www.sandia.gov/csit/research/visualization/fclib.php
 |access-date  = 2010-10-04
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20100527132750/http://www.sandia.gov/csit/research/visualization/fclib.php
 |archive-date = 2010-05-27
}}
</ref> FCLib focuses on providing data structures that are "feature-aware" and support feature-based analysis.<ref name="fclib" /> It is written in C and developed under a "[[BSD licenses|BSD]]-like" license.<ref name="ASCe">
{{cite web
| title = Award Winning Data Analysis Toolkit Released
| work = ASCe News Quarterly Newsletter
| date = January 2007
| publisher = Sandia National Laboratories
| url = http://www.sandia.gov/NNSA/ASC/enews/0107/0107eNewsPrintable.pdf
| access-date = 2010-10-04
}}
</ref>
* [[LAMMPS]] (Large-scale Atomic/Molecular Massively Parallel Simulator) is a molecular dynamics library that can be used to model parallel atomic/subatomic processes at large scale.<ref name="LAMMPS">
{{cite web
| title = LAMMPS Molecular Dynamics Simulator
| publisher = Sandia National Laboratories
| url = http://lammps.sandia.gov/
| access-date = 2010-10-03
}}
</ref> It is produced under the [[GNU General Public License]] (GPL) and distributed on the Sandia National Laboratories website as well as [[SourceForge]].<ref name="LAMMPS" />
* LibVMI is a library for simplifying the reading and writing of memory in running virtual machines, a technique known as virtual machine introspection.<ref name="LibVMI">
{{cite web
 |title       = The LibVMI Project
 |publisher   = Sandia National Laboratories
 |url         = http://vmitools.sandia.gov/
 |access-date  = 2011-11-18
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20120304225647/http://vmitools.sandia.gov/
 |archive-date = 2012-03-04
}}
</ref> It is licensed under the [[GNU Lesser General Public License]].<ref name="LibVMI" />
* MapReduce-MPI Library is an implementation of [[MapReduce]] for distributed-memory parallel machines, utilizing the [[Message Passing Interface]] (MPI) for communication. It is developed under a modified [[BSD licenses|Berkeley Software Distribution license]].<ref>
{{cite web
| title = MapReduce-MPI Library
| publisher = Sandia National Laboratories
| url = http://www.sandia.gov/~sjplimp/mapreduce.html
| access-date = 2010-10-03
}}
</ref>
* MultiThreaded Graph Library (MTGL) is a collection of graph-based algorithms designed to take advantage of parallel, shared-memory architectures such as the Cray XMT, Symmetric Multiprocessor (SMP) machines, and multi-core workstations.<ref name="MTGL">
{{cite web
| title = MTGL
| publisher = Sandia National Laboratories
| url = https://software.sandia.gov/trac/mtgl
| access-date = 2010-10-04
}}
</ref><ref name="Berry">
{{cite book
| last = Berry
| first = Jonathan W.
|author2=Bruce Hendrickson |author3=Simon Kahan |author4=Petr Konecny
 | title = 2007 IEEE International Parallel and Distributed Processing Symposium
| chapter = Software and Algorithms for Graph Queries on Multithreaded Architectures
| pages = 1–14
| date = March 2007
| doi = 10.1109/IPDPS.2007.370685
| isbn = 978-1-4244-0909-9
| citeseerx = 10.1.1.421.7457
| s2cid = 351906
}}
</ref> It is developed under a BSD License.<ref name="MTGL" />
* [[ParaView]] is a cross-platform application for performing data analysis and visualization.<ref name="Paraview">
{{cite web
| title = ParaView&nbsp;– Open Source Scientific Visualization
| publisher = Kitware
| url = http://www.paraview.org/
| access-date = 2010-10-03
}}
</ref> It is a collaborative effort, developed by Sandia National Laboratories, Los Alamos National Laboratories, and the [[United States Army Research Laboratory]], and funded by the [[Advanced Simulation and Computing Program]].<ref name="Paraview" /> It is developed under a BSD license.<ref name="Paraview" />
* [[Pyomo]] is a python-based optimization [[Algebraic modeling language|Mathematical Programming Language]] which supports most commercial and open-source solver engines.
* Soccoro, a collaborative effort with [[Wake Forest University|Wake Forest]] and [[Vanderbilt University|Vanderbilt]] Universities, is [[object-oriented]] software for performing electronic-structure calculations based on density-functional theory.<ref name="Soccoro">{{cite web
| title = Sandia National Laboratories:Soccoro
| publisher = Sandia National Laboratories
| url = http://dft.sandia.gov/socorro/mainpage.html
| access-date = 2010-10-03
| archive-date = September 19, 2010
| archive-url = https://web.archive.org/web/20100919193935/http://dft.sandia.gov/Socorro/mainpage.html
| url-status = dead
}}</ref> It utilizes libraries such as MPI, [[BLAS]], and [[LAPACK]] and is developed under the GNU General Public License.<ref name="Soccoro" />
* Titan Informatics Toolkit is a collection of cross-platform libraries for ingesting, analyzing, and displaying scientific and informatics data.<ref name="Titan">
{{cite web
 |title       = Titan Toolkit
 |publisher   = Sandia National Laboratories
 |url         = http://titan.sandia.gov/
 |access-date  = 2010-10-03
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20101216061255/http://titan.sandia.gov/
 |archive-date = 2010-12-16
}}
</ref><ref name="Infovis">
{{cite web
 |title       = Main Page&nbsp;– InfovisWiki
 |publisher   = [[Kitware|Kitware, Inc.]]
 |url         = http://www.kitware.com/InfovisWiki/index.php/Main_Page
 |access-date  = 2010-10-03
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20100918104659/http://www.kitware.com/InfovisWiki/index.php/Main_Page
 |archive-date = 2010-09-18
}}
</ref> It is a collaborative effort with [[Kitware|Kitware, Inc.]], and uses various open-source components such as the [[Boost C++ Libraries|Boost Graph Library]].<ref name="Titan" /> It is developed under a [[New BSD License#3-clause|New BSD license]].<ref name="Titan" />
* [[Trilinos]] is an object-oriented library for building scalable scientific and engineering applications, with a focus on linear algebra techniques.<ref name="Trilinos">
{{cite web
| title = The Trilinos Project
| publisher = Sandia National Laboratories
| url = http://trilinos.org/
| access-date = 2017-01-04
}}
</ref> Most Trilinos packages are licensed under a [[Modified BSD License]].<ref name="Trilinos" />
* [https://xyce.sandia.gov/ Xyce] is an open source, [[SPICE]]-compatible, high-performance analog circuit simulator, capable of solving extremely large circuit problems.<ref>{{cite web|url=https://xyce.sandia.gov/|title=Sandia National Laboratories: Xyce Parallel Electronic Simulator (Xyce)}}</ref>
* [https://charon.sandia.gov/ Charon] is a [[Technology CAD|TCAD]] simulator which was open-sourced by Sandia in 2020.<ref>
{{cite web |url=https://charon.sandia.gov/ |title=Charon TCAD |last= |first= |date= |website= |publisher= |access-date=2022-02-01}}
</ref><ref name="devsim news charon">
{{cite web |url=https://devsim.com/charon-open-source/ |title=Charon TCAD software open source release |last= |first= |date=2020-05-24 |website=DEVSIM LLC |publisher= |access-date=2022-02-01}}
</ref><ref>
{{cite web |url=https://tcadcentral.com/Software.html |title=TCAD Central – Open Source TCAD Software |last= |first= |date= |website= |publisher= |access-date=}}
</ref> It is significant as previously there were no major TCAD simulators for large-scale simulations that were open source.<ref name="devsim news charon" />
* [https://tracktable.sandia.gov/ Tracktable] is a Sandia-developed open source platform for processing, analyzing, and visualizing the paths of moving objects (trajectories).<ref name="traj">
{{cite web
 |title       = Large-Scale Trajectory Analysis via Feature Vectors
 |url         = https://www.osti.gov/biblio/1770825
 |access-date  = 2025-02-27
}}
</ref>

In addition, Sandia National Laboratories collaborates with Kitware, Inc. in developing the [[VTK|Visualization Toolkit]] (VTK), a cross-platform graphics and visualization software suite.<ref name="VTK">
{{cite web
| title = VTK&nbsp;– The Visualization Toolkit
| publisher = [[Kitware|Kitware, Inc.]]
| url = http://vtk.org/
| access-date = 2010-10-03
}}
</ref> This collaboration has focused on enhancing the information visualization capabilities of VTK and has in turn fed back into other projects such as ParaView and Titan.<ref name="Paraview" /><ref name="Titan" /><ref name="VTK" />