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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 622 162

  3. RAJA RAJA Public

    RAJA Performance Portability Layer (C++)

    C++ 560 110

  4. Caliper Caliper Public

    Caliper is an instrumentation and performance profiling library

    C++ 395 74

  5. Umpire Umpire Public

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

    C++ 395 61

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 284 65

Repositories

Showing 10 of 633 repositories
  • Silo Public

    Mesh and Field I/O Library and Scientific Database

    llnl/Silo’s past year of commit activity
    C 40 27 98 1 Updated Jan 24, 2026
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 236 69 191 7 Updated Jan 24, 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 622 BSD-3-Clause 162 29 12 Updated Jan 24, 2026
  • ISO-DART Public

    ISO-DART: Independent System Operator Data Automated Request Tool

    llnl/ISO-DART’s past year of commit activity
    Python 15 MIT 7 0 0 Updated Jan 24, 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 24 1 0 Updated Jan 24, 2026
  • smith Public

    Smith is a high order nonlinear thermomechanical simulation code

    llnl/smith’s past year of commit activity
    C++ 222 BSD-3-Clause 34 138 (1 issue needs help) 15 Updated Jan 24, 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 64 Apache-2.0 42 133 26 Updated Jan 23, 2026
  • UEDGE Public

    2D fluid simulation of plasma and neutrals in magnetic fusion devices

    llnl/UEDGE’s past year of commit activity
    Fortran 46 LGPL-2.1 22 16 6 Updated Jan 24, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 72 BSD-3-Clause 23 33 (1 issue needs help) 11 Updated Jan 24, 2026
  • mgmol Public

    MGmol is a scalable O(N) First-Principles Molecular Dynamics code that is capable of performing large-scale electronics structure calculations and molecular dynamics simulations of atomistic systems.

    llnl/mgmol’s past year of commit activity
    C++ 44 15 11 8 Updated Jan 24, 2026
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