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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++ 849 176

  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 634 163

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 567 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 398 76

  5. Umpire Umpire Public

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

    C++ 397 62

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 284 65

Repositories

Showing 10 of 645 repositories
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 4 Updated Feb 24, 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++ 45 BSD-3-Clause 25 1 0 Updated Feb 24, 2026
  • Kripke Public

    Kripke is a simple, scalable, 3D Sn deterministic particle transport code

    llnl/Kripke’s past year of commit activity
    C++ 40 BSD-3-Clause 41 4 3 Updated Feb 24, 2026
  • repligit Public

    A Git client for mirroring multiple remotes without storing state

    llnl/repligit’s past year of commit activity
    Python 4 Apache-2.0 3 1 6 Updated Feb 24, 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 66 Apache-2.0 43 126 23 Updated Feb 24, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 224 BSD-3-Clause 36 140 (1 issue needs help) 16 Updated Feb 24, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 182 33 226 (2 issues need help) 18 Updated Feb 24, 2026
  • APBuilder Public

    Python tool to create AC2Dr atmosphere profiles from weather models.

    llnl/APBuilder’s past year of commit activity
    Python 1 0 0 1 Updated Feb 24, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 74 BSD-3-Clause 23 35 (1 issue needs help) 10 Updated Feb 24, 2026
  • radiuss-spack-configs Public

    Shared spack configurations for RADIUSS projects

    llnl/radiuss-spack-configs’s past year of commit activity
    Python 3 MIT 11 0 1 Updated Feb 23, 2026
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