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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++ 849 176

  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 639 162

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 568 112

  4. Umpire Umpire Public

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

    C++ 399 63

  5. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 398 77

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 285 64

Repositories

Showing 10 of 650 repositories
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 225 BSD-3-Clause 36 137 (1 issue needs help) 15 Updated Mar 11, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 568 BSD-3-Clause 112 209 (7 issues need help) 35 Updated Mar 11, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 241 70 195 9 Updated Mar 11, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 183 BSD-3-Clause 33 226 (2 issues need help) 16 Updated Mar 11, 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 Mar 11, 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 67 Apache-2.0 43 126 23 Updated Mar 11, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 132 BSD-3-Clause 53 60 23 Updated Mar 11, 2026
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 4 Updated Mar 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 0 Updated Mar 10, 2026
  • uberenv Public

    Automates using spack to build and deploy software

    llnl/uberenv’s past year of commit activity
    Shell 30 12 33 (1 issue needs help) 5 Updated Mar 10, 2026
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