libROM is a free, lightweight, scalable C++ library for data-driven physical simulation methods. It is the main tool box that the reduced order modeling team at LLNL uses to develop efficient model order reduction techniques and physics-constrained data-driven methods. We try to collect any useful reduced order model routines, which are separable to the high-fidelity physics solvers, into libROM. Plus, libROM is open source, so anyone is welcome to suggest new ideas or contribute to the development. Let's work together for better data-driven technology!
Features
- Proper Orthogonal Decomposition
- Dynamic mode decomposition
- Projection-based reduced order models
- Hyper-reduction
- Greedy algorithm
Many more features will be available soon. Stay tuned!
libROM is used in many projects, including BLAST, ARDRA, Laghos, SU2, ALE3D and HyPar. Many MFEM-based ROM examples can be found in Examples.
See also our Gallery, Publications and News pages.
News
| Date | Message |
|---|---|
| Oct 17, 2022 | Rayleigh-Taylor instability ROM paper is published in JCP. |
| Sep 30, 2022 | Youngsoo Choi will present at SIAM MDS22 |
| Sep 28, 2022 | Dylan Copeland will present at SIAM MDS22 |
| Sep 27, 2022 | Siu Wun Cheung will present at SIAM MDS22 |
| May 19, 2022 | CWROM stress lattice preprint is available in arXiv. |
| Apr 26, 2022 | gLaSDI preprint is available in arXiv. |
| Apr 26, 2022 | parametric DMD preprint is available in arXiv. |
| Mar 29, 2022 | S-OPT preprint is available in arXiv. |
| Nov 19, 2021 | NM-ROM paper is published in JCP. |
| Nov 10, 2021 | Laghos ROM is published at CMAME. |
libROM tutorials in YouTube
| Date | Title |
|---|---|
| July 22, 2021 | Poisson equation & its finite element discretization |
| Sep. 1, 2021 | Poisson equation & its reduced order model |
| Sep. 23, 2021 | Physics-informed sampling procedure for reduced order models |
| Sep. 11, 2022 | Local reduced order models and interpolation-based parameterization |
| Sep. 23, 2022 | Projection-based reduced order model for nonlinear system |
Latest Release
Examples ┊ Code documentation ┊ Sources
Documentation
Building libROM ┊ Poisson equation ┊ Greedy for Poisson
New users should start by examining the example codes and tutorials.
We also recommend using GLVis or VisIt for visualization.
Contact
Use the GitHub issue tracker to report bugs or post questions or comments. See the About page for citation information.