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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 623 163

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 561 110

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 396 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 634 repositories
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 237 70 196 6 Updated Jan 31, 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 25 1 0 Updated Jan 31, 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 42 134 21 Updated Jan 30, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 130 52 63 24 Updated Jan 31, 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 31, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 72 BSD-3-Clause 23 34 (1 issue needs help) 15 Updated Jan 31, 2026
  • Tribol Public

    Modular interface physics library featuring state-of-the-art contact physics methods.

    llnl/Tribol’s past year of commit activity
    C++ 36 MIT 8 28 8 Updated Jan 31, 2026
  • UETOOLS Public
    llnl/UETOOLS’s past year of commit activity
    Jupyter Notebook 4 LGPL-2.1 4 0 1 Updated Jan 30, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 181 32 226 (2 issues need help) 16 Updated Jan 30, 2026
  • dapper Public

    Dependency Analysis Project - tools to discover implicit dependencies in source code and on systems

    llnl/dapper’s past year of commit activity
    Python 18 MIT 4 20 10 Updated Jan 30, 2026
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