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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 625 163

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 565 111

  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 635 repositories
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 565 111 207 (7 issues need help) 37 Updated Feb 5, 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 5 Updated Feb 5, 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 35 140 (1 issue needs help) 13 Updated Feb 5, 2026
  • axom_data Public

    Input data for axom tests and examples

    llnl/axom_data’s past year of commit activity
    Python 3 BSD-3-Clause 4 0 2 Updated Feb 5, 2026
  • mphys-surrogate-model Public

    This repository contains python scripts for training latent-space machine learning representations of warm rain droplet microphysics

    llnl/mphys-surrogate-model’s past year of commit activity
    Python 0 0 0 1 Updated Feb 5, 2026
  • axom Public

    CS infrastructure components for HPC applications

    llnl/axom’s past year of commit activity
    C++ 182 32 226 (2 issues need help) 18 Updated Feb 5, 2026
  • RAJAPerf Public

    RAJA Performance Suite

    llnl/RAJAPerf’s past year of commit activity
    Jupyter Notebook 130 52 61 23 Updated Feb 5, 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 66 Apache-2.0 42 135 16 Updated Feb 5, 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 7 Updated Feb 5, 2026
  • goTLS Public

    goTLS is an automated TLS certificate issuance and management tool for Windows, Mac, and Linux. It can generate keys, CSRs, and optionally obtain the certificate with an internal Active Directory Certificate Services (ADCS) endpoint.

    llnl/goTLS’s past year of commit activity
    Go 7 MIT 0 0 0 Updated Feb 5, 2026
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