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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 644 165

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 571 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 405 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 7, 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 35 139 (1 issue needs help) 16 Updated Apr 7, 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 25 1 0 Updated Apr 7, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 571 BSD-3-Clause 112 208 (7 issues need help) 38 Updated Apr 7, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 241 71 188 9 Updated Apr 7, 2026
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 5 Updated Apr 7, 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 6, 2026
  • dftracer-utils Public

    A collection of utilities for DFTracer

    llnl/dftracer-utils’s past year of commit activity
    C++ 1 MIT 2 5 (3 issues need help) 0 Updated Apr 7, 2026
  • CHAI Public

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

    llnl/CHAI’s past year of commit activity
    C++ 111 BSD-3-Clause 23 16 15 Updated Apr 6, 2026
  • Umpire Public

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

    llnl/Umpire’s past year of commit activity
    C++ 400 MIT 63 22 9 Updated Apr 6, 2026
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