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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++ 845 171

  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++ 396 74

  5. Umpire Umpire Public

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

    C++ 392 61

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 283 65

Repositories

Showing 10 of 633 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++ 43 BSD-3-Clause 23 1 0 Updated Jan 11, 2026
  • microbenchmarks Public
    llnl/microbenchmarks’s past year of commit activity
    C++ 0 Apache-2.0 0 0 0 Updated Jan 10, 2026
  • 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 10, 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 29 8 Updated Jan 10, 2026
  • ERF Public Forked from erf-model/ERF

    Energy Research and Forecasting Model

    llnl/ERF’s past year of commit activity
    C++ 1 58 0 0 Updated Jan 10, 2026
  • CHAI Public

    Copy-hiding array abstraction to automatically migrate data between memory spaces

    llnl/CHAI’s past year of commit activity
    C++ 110 BSD-3-Clause 23 23 16 Updated Jan 10, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 128 BSD-3-Clause 51 61 25 Updated Jan 10, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 72 BSD-3-Clause 23 33 (1 issue needs help) 10 Updated Jan 10, 2026
  • PYB11Generator Public

    PYB11Generator is a python based code generator that creates pybind11 code for binding C++ libraries as extensions in Python.

    llnl/PYB11Generator’s past year of commit activity
    Python 20 BSD-3-Clause 5 0 0 Updated Jan 10, 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 42 132 28 Updated Jan 10, 2026
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