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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++ 853 178

  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 643 165

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 571 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 404 78

  5. Umpire Umpire Public

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

    C++ 400 63

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 285 65

Repositories

Showing 10 of 657 repositories
  • 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++ 45 BSD-3-Clause 25 1 0 Updated Apr 6, 2026
  • units Public

    A run-time C++ library for working with units of measurement and conversions between them and with string representations of units and measurements

    llnl/units’s past year of commit activity
    C++ 169 BSD-3-Clause 31 4 (1 issue needs help) 0 Updated Apr 6, 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 643 BSD-3-Clause 165 31 14 Updated Apr 5, 2026
  • GridDyn Public

    GridDyn is an open-source power transmission simulation software package

    llnl/GridDyn’s past year of commit activity
    C++ 57 26 10 1 Updated Apr 5, 2026
  • llnl.github.io Public

    Public home for LLNL software catalog

    llnl/llnl.github.io’s past year of commit activity
    JavaScript 63 MIT 58 13 0 Updated Apr 5, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 132 BSD-3-Clause 53 59 19 Updated Apr 4, 2026
  • mphys-surrogate-model Public

    This repository contains python scripts for training latent-space machine learning representations of warm rain droplet microphysics

    llnl/mphys-surrogate-model’s past year of commit activity
    Python 0 0 0 0 Updated Apr 4, 2026
  • FPChecker Public

    A dynamic analysis tool to detect floating-point errors in HPC applications.

    llnl/FPChecker’s past year of commit activity
    Python 40 Apache-2.0 11 11 4 Updated Apr 4, 2026
  • Tribol Public

    Modular interface physics library featuring state-of-the-art contact physics methods.

    llnl/Tribol’s past year of commit activity
    C++ 35 MIT 9 28 11 Updated Apr 4, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 226 BSD-3-Clause 35 139 (1 issue needs help) 17 Updated Apr 4, 2026
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