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Lawrence Livermore National Laboratory

For over 70 years, the Lawrence Livermore National Laboratory has applied science and technology to make the world a safer place.

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  1. zfp zfp Public

    Compressed numerical arrays that support high-speed random access

    C++ 847 172

  2. sundials sundials Public

    Official development repository for SUNDIALS - a SUite of Nonlinear and DIfferential/ALgebraic equation Solvers. Pull requests are welcome for bug fixes and minor changes.

    C 620 161

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 560 110

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 395 74

  5. Umpire Umpire Public

    An application-focused API for memory management on NUMA & GPU architectures

    C++ 394 61

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 283 65

Repositories

Showing 10 of 633 repositories
  • llnl.github.io Public

    Public home for LLNL software catalog

    llnl/llnl.github.io’s past year of commit activity
    JavaScript 61 MIT 58 14 0 Updated Jan 21, 2026
  • UEDGE Public

    2D fluid simulation of plasma and neutrals in magnetic fusion devices

    llnl/UEDGE’s past year of commit activity
    Fortran 46 LGPL-2.1 22 16 6 Updated Jan 21, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 560 110 208 (7 issues need help) 41 Updated Jan 21, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 180 BSD-3-Clause 32 229 (2 issues need help) 18 Updated Jan 21, 2026
  • benchpark Public

    An open collaborative repository for reproducible specifications of HPC benchmarks and cross site benchmarking environments

    llnl/benchpark’s past year of commit activity
    Python 63 Apache-2.0 42 133 31 Updated Jan 21, 2026
  • Surfactant Public

    Modular framework for file information extraction and dependency analysis to generate accurate SBOMs

    llnl/Surfactant’s past year of commit activity
    Python 38 MIT 23 53 (6 issues need help) 11 Updated Jan 21, 2026
  • mgmol Public

    MGmol is a scalable O(N) First-Principles Molecular Dynamics code that is capable of performing large-scale electronics structure calculations and molecular dynamics simulations of atomistic systems.

    llnl/mgmol’s past year of commit activity
    C++ 44 15 11 7 Updated Jan 20, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 130 51 62 23 Updated Jan 20, 2026
  • sundials Public

    Official development repository for SUNDIALS - a SUite of Nonlinear and DIfferential/ALgebraic equation Solvers. Pull requests are welcome for bug fixes and minor changes.

    llnl/sundials’s past year of commit activity
    C 620 BSD-3-Clause 161 30 16 Updated Jan 21, 2026
  • zero-rk Public

    Zero-order Reaction Kinetics (Zero-RK) is a software package that simulates chemically reacting systems in a computationally efficient manner.

    llnl/zero-rk’s past year of commit activity
    C++ 43 BSD-3-Clause 23 1 0 Updated Jan 21, 2026
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