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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++ 848 172

  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 629 163

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 566 111

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 397 75

  5. Umpire Umpire Public

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

    C++ 396 61

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 284 65

Repositories

Showing 10 of 636 repositories
  • 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 629 BSD-3-Clause 163 30 16 Updated Feb 9, 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 42 135 18 Updated Feb 9, 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 25 1 0 Updated Feb 9, 2026
  • 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++ 1 244 0 0 Updated Feb 9, 2026
  • llnl.github.io Public

    Public home for LLNL software catalog

    llnl/llnl.github.io’s past year of commit activity
    JavaScript 62 MIT 58 14 0 Updated Feb 8, 2026
  • Tribol Public

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

    llnl/Tribol’s past year of commit activity
    C++ 36 MIT 8 28 7 Updated Feb 8, 2026
  • UEDGE Public

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

    llnl/UEDGE’s past year of commit activity
    Fortran 47 LGPL-2.1 22 16 6 Updated Feb 7, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 72 BSD-3-Clause 23 35 (1 issue needs help) 14 Updated Feb 7, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 238 70 198 10 Updated Feb 7, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 182 32 225 (2 issues need help) 18 Updated Feb 7, 2026
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