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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 623 162

  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++ 396 61

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 284 65

Repositories

Showing 10 of 633 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 623 BSD-3-Clause 162 28 12 Updated Jan 28, 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 28, 2026
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 3 Updated Jan 27, 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 65 Apache-2.0 42 133 26 Updated Jan 28, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 237 70 191 5 Updated Jan 27, 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 24 1 0 Updated Jan 27, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 223 BSD-3-Clause 34 138 (1 issue needs help) 15 Updated Jan 28, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 560 110 208 (7 issues need help) 41 Updated Jan 28, 2026
  • kosh Public

    Kosh allows codes to store, query, share data via an easy-to-use Python API. Kosh lies on top of Sina and as a result can use any database backend supported by Sina. In adition Kosh aims to make data access and sharing as simple as possible.

    llnl/kosh’s past year of commit activity
    Python 9 MIT 0 1 0 Updated Jan 28, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 181 32 228 (2 issues need help) 15 Updated Jan 28, 2026
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