lammps.sandia.govLAMMPS Molecular Dynamics Simulator

lamp : a device that generates light, heat, or therapeutic radiation; something that illumines the mind or soul -- www.dictionary.com hover to animate -- input script physical analog (start at 3:25) & explanation The 2019 LAMMPS Workshop and Symposium was held Aug 13-15 in Albuquerque, NM --- program and talk/poster PDFs here The 2019 LAMMPS Workshop and Symposium was held Aug 13-15 in Albuquerque, NM --- free and open to all LAMMPS users and developers July 1 registration deadline for workshop if you want to present a talk or poster --- program here , register here We are planning to optionally distribute LAMMPS under the LGPL license. If you have authored code included in LAMMPS and haven't already received an email from us, please see this link . July 2018 tutorial and symposium on Modeling Supra-molecular Structures with LAMMPS will be held at Temple University. July 2018 tutorial and symposium on Modeling Supra-molecular Structures with LAMMPS will be held at Temple University. August 1-3, 2017 LAMMPS Workshop and Symposium in ABQ, NM. Info link and registration link . August 2016 tutorial and symposium on Materials modeling with LAMMPS at Temple University. September 2016 LAMMPS Tutorial for Scientists in south-east Asia in Bandung, Indonesia. -- Big Picture Code Documentation Results Related Tools Context User Support Features Download Manual Publications Pre/Post processing Authors Mail list Non-features GitHub Developer guide Pictures Pizza.py Toolkit History IRC channel Packages SourceForge Tutorials Movies Offsite LAMMPS packages & tools Funding Workshops FAQ Latest features & bug fixes MD to LAMMPS glossary Benchmarks Visualization Open source Contribute to LAMMPS Wish list Report bugs & request features Commands Citing LAMMPS Related modeling codes . LAMMPS is a classical molecular dynamics code with a focus on materials modeling. It's an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. LAMMPS has potentials for solid-state materials (metals, semiconductors) and soft matter (biomolecules, polymers) and coarse-grained or mesoscopic systems. It can be used to model atoms or, more generically, as a parallel particle simulator at the atomic, meso, or continuum scale. LAMMPS runs on single processors or in parallel using message-passing techniques and a spatial-decomposition of the simulation domain. Many of its models have versions that provide accelerated performance on CPUs, GPUs, and Intel Xeon Phis. The code is designed to be easy to modify or extend with new functionality. LAMMPS is distributed as an open source code under the terms of the GPL . The current version can be downloaded here . Links are also included to older versions. All LAMMPS development is done via GitHub , so all versions can also be accessed there. Periodic releases are also posted to SourceForge . LAMMPS is distributed by Sandia National Laboratories , a US Department of Energy laboratory. The main authors of LAMMPS are listed on this page along with contact info and other contributors. Funding for LAMMPS development has come primarily from DOE (OASCR, OBER, ASCI, LDRD, Genomes-to-Life) and is acknowledged here . The LAMMPS web site is hosted by Sandia, which has this Privacy and Security statement . Search the LAMMPS web pages Recent LAMMPS News (2/20) Improved version of the FIRE minimizer. See details here (8/19) New stable release, 7Aug19 version. See details here (6/19) New stable release, 5Jun19 version. See details here (12/18) New stable release, 12Dec18 version. See details here (11/18) New hyper command for running time-accelerated global or local hyperdynamics simulations. See details here . (10/18) Kokkos support (GPU) for granular interactions. See details here . (10/18) New USER-PTM package for performing a polyhedral template matching analysis to characterize local structure. See details here . (9/18) New USER-SCAFACOS package for using the ScaFaCoS library from LAMMPS. See details here . (9/18) New MESSAGE package for client/server coupling between LAMMPS and another code via the CSlib . See details here . (8/18) New stable release, 22Aug18 version. See details here (8/18) New CMake option for building LAMMPS and all of its packages, as an alternative to traditional make. See details here . (6/18) New SPIN package for modeling the dynamics of magnetic atomic spins, coupled to the usual MD motion of atoms. See details here . (5/18) New fix bond/react command to enable simulation of one or more complex heuristic reactions that rearrange molecular topology. See details here . (3/18) New stable release, 16Mar18 version. See details here . Old new LAMMPS Highlight (see the Pictures and Movies pages for more examples of LAMMPS calculations) Blood flow in capillaries This is work by Kirill Lykov (kirill.lykov at usi.ch), Xuejin Li et al at the USI, Switzerland and Brown University, USA to develop new Open Boundary Condition (OBC) methods for particle-based methods suitable to simulate flow of deformable bodies in complex computational domains with several inlets and outlets. The image (left) and movie (right) show the application of the OBCs to red blood cell flow in a straight pipe, bifurcation, and a part of a capillary network. The program Blender was used for the rendering. This paper has further details. Inflow/Outflow Boundary Conditions for Particle-Based Blood Flow Simulations: Application to Arterial Bifurcations and Trees , K. Lykov, X. Li, H. Lei, I. V. Pivkin, G. E. Karniadakis, PLoS Computational Biology 11(8): e1004410 (2015). (doi:10.1371/journal.pcbi.1004410) ( abstract )...