UG4

UG4 (Unstructured Grids 4) is an extensive, flexible, cross-platform open source simulation framework for the numerical solution of systems of partial differential equations. Using Finite Element and Finite Volume methods on hybrid, adaptive, unstructured multigrid hierarchies, UG4 allows for the simulation of complex real world models (physical, biological etc.) on massively parallel computer architectures.

UG4 is implemented in the C++ programming language and provides grid management, discretization and (linear as well as non-linear) solver utilities. It is extensible and customizable via its plugin mechanism. The highly scalable MPI based parallelization of UG4 has been shown to scale to hundred thousands of cores.

Simulation workflows are defined either using the Lua scripting language or the graphical VRL interface https://vrl-studio.mihosoft.eu/. Besides that, UG4 can be used as a library for third-party code.

Several examples are provided in the Examples application that can be used for simulations of the corresponding phenomena but also serve as demonstration modules for implementing user-defined plugins and scripts. By developing custom plugins, users can extend the functionality of the framework for their particular purposes. The framework provides coupling facilities for the models implemented in different plugins.

Key elements of UG4 are:

  • Efficient solvers on distributed, adaptive multigrid hierarchies.
  • A flexible component based discretization system.
  • Efficient support for massively parallel computer architectures.
  • Full scripting support.
  • A modular plugin based architecture.
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Source Code
Contributors
GW AN MR SR AV

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