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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 648 166

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 574 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 407 77

  5. Umpire Umpire Public

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

    C++ 400 64

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 286 65

Repositories

Showing 10 of 658 repositories
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 5 Updated Apr 21, 2026
  • GridDyn Public

    GridDyn is an open-source power transmission simulation software package

    llnl/GridDyn’s past year of commit activity
    MATLAB 57 BSD-3-Clause 27 10 1 Updated Apr 21, 2026
  • radiuss-spack-configs Public

    Shared spack configurations for RADIUSS projects

    llnl/radiuss-spack-configs’s past year of commit activity
    Python 3 MIT 11 0 2 Updated Apr 21, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 227 BSD-3-Clause 35 141 (1 issue needs help) 16 Updated Apr 21, 2026
  • mttime Public

    Time Domain Moment Tensor Inversion in Python

    llnl/mttime’s past year of commit activity
    Python 70 24 4 0 Updated Apr 21, 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 648 BSD-3-Clause 166 32 16 Updated Apr 21, 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 71 Apache-2.0 45 117 19 Updated Apr 21, 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 26 1 0 Updated Apr 21, 2026
  • WarpX Public Forked from BLAST-WarpX/warpx

    WarpX is an advanced, time-based electromagnetic & electrostatic Particle-In-Cell code.

    llnl/WarpX’s past year of commit activity
    C++ 2 257 0 0 Updated Apr 20, 2026
  • polytope Public

    A library for generating Voronoi and Voronoi-like tessellations for computational domains with nontrivial boundaries.

    llnl/polytope’s past year of commit activity
    C++ 10 2 9 4 Updated Apr 20, 2026
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