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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 645 166

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 572 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 407 77

  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
  • 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 12, 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 26 1 0 Updated Apr 12, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 185 BSD-3-Clause 33 226 (2 issues need help) 18 Updated Apr 11, 2026
  • Silo Public

    Mesh and Field I/O Library and Scientific Database

    llnl/Silo’s past year of commit activity
    C 42 27 101 1 Updated Apr 11, 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 11, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 241 71 190 9 Updated Apr 11, 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 35 140 (1 issue needs help) 18 Updated Apr 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 645 BSD-3-Clause 166 32 14 Updated Apr 10, 2026
  • ERF Public Forked from erf-model/ERF

    Energy Research and Forecasting Model

    llnl/ERF’s past year of commit activity
    C++ 1 67 0 0 Updated Apr 10, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 572 BSD-3-Clause 112 208 (7 issues need help) 39 Updated Apr 10, 2026
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