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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++ 848 174

  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
  • RASE Public

    Replicative Assessment of Spectrometric Equipment

    llnl/RASE’s past year of commit activity
    Python 10 2 0 0 Updated Feb 10, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 225 BSD-3-Clause 35 139 (1 issue needs help) 13 Updated Feb 10, 2026
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 1 Updated Feb 10, 2026
  • ATS Public

    ATS - Automated Testing System - is an open-source, Python-based tool for automating the running of tests of an application across a broad range of high performance computers.

    llnl/ATS’s past year of commit activity
    Python 9 BSD-3-Clause 6 4 2 Updated Feb 10, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 130 52 61 23 Updated Feb 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 629 BSD-3-Clause 163 30 16 Updated Feb 10, 2026
  • UETOOLS Public
    llnl/UETOOLS’s past year of commit activity
    Jupyter Notebook 4 LGPL-2.1 4 0 1 Updated Feb 10, 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 10, 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 Feb 10, 2026
  • SEAMsurrogates Public

    Shared Education in Artificial intelligence and Machine learning (SEAM) professional development course on "Surrogate Modeling and Design Optimization," as designed at LLNL.

    llnl/SEAMsurrogates’s past year of commit activity
    Python 5 1 8 0 Updated Feb 10, 2026
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