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 (libROM, pylibROM)
- Dynamic mode decomposition (libROM, pylibROM)
- Projection-based reduced order models (libROM, pylibROM)
- Hyper-reduction (libROM, pylibROM)
- Greedy algorithm (libROM, pylibROM)
- Latent space dynamics identification (LaSDI, gLaSDI, GPLaSDI)
- Domain decomposition nonlinear manifold reduced order model (DD-NM-ROM)
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.
Recent News
| Date | Message |
|---|---|
| Sep 1, 2024 | tLaSDI paper is published in CMAME |
| Aug 1, 2024 | S-OPT paper is published in SISC |
| July 13, 2024 | Data-scarce paper is published in Shock Waves |
| July 8, 2024 | Progressive paper is published in Scientific Reports |
| May 17, 2024 | DD-NM-ROM open source code is available in gitHub |
| May 15, 2024 | DDFEM paper is published in CMAME |
| Apr 29, 2024 | wLaSDI paper is published in CMAME |
| Apr 10, 2024 | Gappy AE paper is published in CMAME |
| Mar 25, 2024 | DD-NM-ROM paper is published in CMAME |
| Mar 16, 2024 | LaSDI book chapter arXiv paper is available |
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 |
| Aug. 23, 2023 | Complete derivation of dynamic mode decomposition |
Latest Release
Examples ┊ Code documentation ┊ libROM Sources ┊ pylibROM Sources ┊ LaghosROM Sources ┊ ScaleupROM ┊ LaSDI Sources ┊ gLaSDI Sources ┊ GPLaSDI Sources ┊ DD-NM-ROM Sources ┊ NM-ROM Sources ┊ WLaSDI ┊ tLaSDI ┊ gappyAE
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.