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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++ 834 170

  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 602 156

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 537 108

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 390 73

  5. Umpire Umpire Public

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

    C++ 384 58

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 275 66

Repositories

Showing 10 of 618 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++ 42 BSD-3-Clause 23 1 0 Updated Oct 13, 2025
  • WarpX Public Forked from BLAST-WarpX/warpx

    WarpX is an advanced, time-based electromagnetic & electrostatic Particle-In-Cell code.

    LLNL/WarpX’s past year of commit activity
    C++ 1 224 0 0 Updated Oct 13, 2025
  • serac Public

    Serac is a high order nonlinear thermomechanical simulation code

    LLNL/serac’s past year of commit activity
    C++ 213 BSD-3-Clause 35 137 (1 issue needs help) 16 Updated Oct 12, 2025
  • llnl.github.io Public

    Public home for LLNL software catalog

    LLNL/llnl.github.io’s past year of commit activity
    JavaScript 60 MIT 58 15 0 Updated Oct 12, 2025
  • datacrumbs Public

    A multi-level dataflow profiler for capture I/O calls from worklows.

    LLNL/datacrumbs’s past year of commit activity
    Jupyter Notebook 3 MIT 3 5 0 Updated Oct 12, 2025
  • saltatlas Public
    LLNL/saltatlas’s past year of commit activity
    C++ 5 MIT 7 6 1 Updated Oct 12, 2025
  • Tribol Public

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

    LLNL/Tribol’s past year of commit activity
    C++ 30 MIT 8 28 11 Updated Oct 11, 2025
  • dftracer Public

    A multi-level dataflow tracer for capturing I/O calls from workflows.

    LLNL/dftracer’s past year of commit activity
    Jupyter Notebook 18 MIT 11 15 6 Updated Oct 11, 2025
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    LLNL/RAJA’s past year of commit activity
    C++ 537 BSD-3-Clause 108 217 (7 issues need help) 34 Updated Oct 11, 2025
  • axom Public

    CS infrastructure components for HPC applications

    LLNL/axom’s past year of commit activity
    C++ 176 BSD-3-Clause 30 217 (2 issues need help) 20 Updated Oct 11, 2025