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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 645 166

  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 63

  6. blt blt Public

    A streamlined CMake build system foundation for developing HPC software

    C++ 286 65

Repositories

Showing 10 of 658 repositories
  • conduit Public

    Simplified Data Exchange for HPC Simulations

    llnl/conduit’s past year of commit activity
    C++ 241 71 191 11 Updated Apr 18, 2026
  • pyranda Public

    A Python driven, Fortran powered Finite Difference solver for arbitrary hyperbolic PDE systems. This is the mini-app for the Miranda code.

    llnl/pyranda’s past year of commit activity
    Fortran 68 28 2 2 Updated Apr 18, 2026
  • spheral Public
    llnl/spheral’s past year of commit activity
    C++ 74 BSD-3-Clause 23 32 (1 issue needs help) 9 Updated Apr 17, 2026
  • RAJA Public

    RAJA Performance Portability Layer (C++)

    llnl/RAJA’s past year of commit activity
    C++ 574 BSD-3-Clause 112 206 (6 issues need help) 41 Updated Apr 17, 2026
  • lustre Public

    LLNL's branches of Lustre

    llnl/lustre’s past year of commit activity
    C 63 17 0 0 Updated Apr 17, 2026
  • Tribol Public

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

    llnl/Tribol’s past year of commit activity
    C++ 35 MIT 9 28 9 Updated Apr 17, 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 645 BSD-3-Clause 166 32 16 Updated Apr 17, 2026
  • zfs Public Forked from openzfs/zfs

    ZFS on Linux - the official OpenZFS implementation for Linux.

    llnl/zfs’s past year of commit activity
    C 3 2,039 0 0 Updated Apr 17, 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 17, 2026
  • quandary Public

    Optimal control for open quantum systems

    llnl/quandary’s past year of commit activity
    C++ 57 MIT 15 7 5 Updated Apr 17, 2026
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