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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 634 163

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 566 112

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 398 76

  5. Umpire Umpire Public

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

    C++ 396 62

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 284 65

Repositories

Showing 10 of 642 repositories
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 182 33 227 (2 issues need help) 22 Updated Feb 19, 2026
  • blt Public

    A streamlined CMake build system foundation for developing HPC software

    llnl/blt’s past year of commit activity
    C++ 284 BSD-3-Clause 65 125 6 Updated Feb 19, 2026
  • romweb Public

    Reduced order model (ROM) website

    llnl/romweb’s past year of commit activity
    Less 2 0 0 0 Updated Feb 19, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 224 BSD-3-Clause 36 139 (1 issue needs help) 16 Updated Feb 19, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 239 70 198 10 Updated Feb 19, 2026
  • piafs Public

    PIAFS: Photochemically Induced Acousto-optics Fluid Simulations

    llnl/piafs’s past year of commit activity
    C 0 0 0 1 Updated Feb 19, 2026
  • benchmarks Public

    Related to benchmarking activities for Advanced Simulation & Computing (ASC) Advanced Technology Systems

    llnl/benchmarks’s past year of commit activity
    5 CC-BY-4.0 0 16 1 Updated Feb 19, 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++ 44 BSD-3-Clause 25 1 0 Updated Feb 19, 2026
  • SAMRAI Public

    Structured Adaptive Mesh Refinement Application Infrastructure - a scalable C++ framework for block-structured AMR application development

    llnl/SAMRAI’s past year of commit activity
    C++ 238 85 52 5 Updated Feb 19, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 73 BSD-3-Clause 23 35 (1 issue needs help) 11 Updated Feb 19, 2026
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