Repositories list

• GridDyn

  Public

  llnl/GridDyn’s past year of commit activity
  GridDyn is an open-source power transmission simulation software package

  energycppsimulation

  energycppsimulation

  MATLAB

  •

  BSD 3-Clause "New" or "Revised" License

  •2727 forks•5757 stars•1010 issues•00 pull requests•Updated Apr 23, 2026Apr 23, 2026

• axom

  Public

  llnl/axom’s past year of commit activity
  CS infrastructure components for HPC applications

  c-plus-pluscppfortran+ 5

  c-plus-pluscppfortranhpcparallel-computingllnlradiussapp-infrastructure

  C++

  •

  BSD 3-Clause "New" or "Revised" License

  •3333 forks•185185 stars•225225 issues•1818 pull requests•Updated Apr 23, 2026Apr 23, 2026

• Silo

  Public

  llnl/Silo’s past year of commit activity
  Mesh and Field I/O Library and Scientific Database

  databasestoragescientific-visualization

  databasestoragescientific-visualization

  C

  •

  Other

  •2727 forks•4242 stars•101101 issues•11 pull request•Updated Apr 23, 2026Apr 23, 2026

• certipy

  Public

  llnl/certipy’s past year of commit activity
  Wraps pyOpenSSL for quick and easy PKI

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •99 forks•1212 stars•22 issues•00 pull requests•Updated Apr 23, 2026Apr 23, 2026

• smith

  Public

  llnl/smith’s past year of commit activity
  Smith is a high order nonlinear thermomechanical simulation code

  cppsimulationfinite-elements+ 2

  cppsimulationfinite-elementsproxy-applicationmath-physics

  C++

  •

  BSD 3-Clause "New" or "Revised" License

  •3535 forks•229229 stars•141141 issues•1717 pull requests•Updated Apr 23, 2026Apr 23, 2026

• zero-rk

  Public

  llnl/zero-rk’s past year of commit activity
  Zero-order Reaction Kinetics (Zero-RK) is a software package that simulates chemically reacting systems in a computationally efficient manner.

  applicationchemistrycpp+ 1

  applicationchemistrycppsimulation

  C++

  •

  BSD 3-Clause "New" or "Revised" License

  •2626 forks•4545 stars•11 issue•00 pull requests•Updated Apr 23, 2026Apr 23, 2026

• benchmarks

  Public

  llnl/benchmarks’s past year of commit activity
  Related to benchmarking activities for Advanced Simulation & Computing (ASC) Advanced Technology Systems

  Creative Commons Attribution 4.0 International

  •00 forks•55 stars•1717 issues•11 pull request•Updated Apr 23, 2026Apr 23, 2026

• ERF

  Public

  llnl/ERF’s past year of commit activity
  Energy Research and Forecasting Model

  C++

  •

  Other

  •6666 forks•11 star•00 issues•00 pull requests•Updated Apr 23, 2026Apr 23, 2026

• camp

  Public

  llnl/camp’s past year of commit activity
  Compiler agnostic metaprogramming library providing concepts, type operations and tuples for C++ and cuda

  cpp

  cpp

  C++

  •

  Other

  •2121 forks•9898 stars•2828 issues•99 pull requests•Updated Apr 23, 2026Apr 23, 2026

• spheral

  Public
  pythonsimulationssph+ 7

  pythonsimulationssphhydrodynamicsastronomical-algorithmshydrodynamic-modelingllnlmeshfreesimulations-physicsmath-physics

  C++

  •

  BSD 3-Clause "New" or "Revised" License

  •2323 forks•7474 stars•3232 issues•99 pull requests•Updated Apr 22, 2026Apr 22, 2026

• Umpire

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

  cpphpcgpu+ 4

  cpphpcgpumemory-managementbltportabilityradiuss

  C++

  •

  MIT License

  •6464 forks•400400 stars•1616 issues•1212 pull requests•Updated Apr 22, 2026Apr 22, 2026

• conduit

  Public

  llnl/conduit’s past year of commit activity
  Simplified Data Exchange for HPC Simulations

  pythonyamljson+ 8

  pythonyamljsoncppfortranhpcscientific-computinghdf5data-managementllnl+ 1

  C++

  •

  Other

  •7171 forks•241241 stars•193193 issues•99 pull requests•Updated Apr 22, 2026Apr 22, 2026

• hubcast-test

  Public

  llnl/hubcast-test’s past year of commit activity
  Testing https://github.com/llnl/hubcast

  22 forks•00 stars•00 issues•22 pull requests•Updated Apr 22, 2026Apr 22, 2026

• Tribol

  Public

  llnl/Tribol’s past year of commit activity
  Modular interface physics library featuring state-of-the-art contact physics methods.

  math-physics

  math-physics

  C++

  •

  MIT License

  •99 forks•3535 stars•2828 issues•99 pull requests•Updated Apr 22, 2026Apr 22, 2026

• UETOOLS

  Public

  llnl/UETOOLS’s past year of commit activity
  Jupyter Notebook

  •

  GNU Lesser General Public License v2.1

  •44 forks•44 stars•00 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• MacPatch

  Public

  llnl/MacPatch’s past year of commit activity
  Software & Patch management for macOS

  Objective-C

  •

  Other

  •1515 forks•8787 stars•00 issues•11 pull request•Updated Apr 22, 2026Apr 22, 2026

• AMS

  Public
  machine-learninghpc

  machine-learninghpc

  C++

  •

  Apache License 2.0

  •99 forks•88 stars•2323 issues•99 pull requests•Updated Apr 22, 2026Apr 22, 2026

• hubcast

  Public

  llnl/hubcast’s past year of commit activity
  An event driven synchronization application for bridging GitHub and GitLab

  cigitlab-cigithub-app

  cigitlab-cigithub-app

  Python

  •

  Apache License 2.0

  •33 forks•2424 stars•1212 issues•66 pull requests•Updated Apr 22, 2026Apr 22, 2026

• dfanalyzer

  Public

  llnl/dfanalyzer’s past year of commit activity
  Layered data-flow analysis for HPC I/O.

  deep-learninghpcmulti-layer+ 1

  deep-learninghpcmulti-layerio-analysis

  Jupyter Notebook

  •

  MIT License

  •33 forks•33 stars•33 issues•33 pull requests•Updated Apr 22, 2026Apr 22, 2026

• hiop

  Public

  llnl/hiop’s past year of commit activity
  HPC solver for nonlinear optimization problems

  hpcoptimizationsolver+ 17

  hpcoptimizationsolvermpicudaconstrained-optimizationnonlinear-programming-algorithmsnonlinear-optimizationnonlinear-programminginterior-point-method+ 10

  C++

  •

  Other

  •4747 forks•226226 stars•3737 issues•1010 pull requests•Updated Apr 22, 2026Apr 22, 2026

• Scabbard

  Public
  Data race checker for unified memory in ROCm HIP

  LLVM

  •

  Apache License 2.0

  •00 forks•00 stars•00 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• USER-EPH

  Public

  llnl/USER-EPH’s past year of commit activity
  LAMMPS extension to capture electron-ion interaction. This is a mirror of https://gitlab.com/artuuuro/USER-EPH.

  cppgpumolecular-dynamics+ 2

  cppgpumolecular-dynamicselectron-phonon-couplinglammps

  C++

  •

  GNU General Public License v3.0

  •88 forks•1818 stars•55 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• benchpark

  Public

  llnl/benchpark’s past year of commit activity
  An open collaborative repository for reproducible specifications of HPC benchmarks and cross site benchmarking environments

  benchmarkperformancehpc

  benchmarkperformancehpc

  Python

  •

  Apache License 2.0

  •4545 forks•7171 stars•119119 issues•2020 pull requests•Updated Apr 22, 2026Apr 22, 2026

• mgmol

  Public

  llnl/mgmol’s past year of commit activity
  MGmol is a scalable O(N) First-Principles Molecular Dynamics code that is capable of performing large-scale electronics structure calculations and molecular dyn…

  cppsimulationmolecular-dynamics+ 1

  cppsimulationmolecular-dynamicsapplications

  C++

  •

  Other

  •1515 forks•4545 stars•1010 issues•77 pull requests•Updated Apr 22, 2026Apr 22, 2026

• mttime

  Public

  llnl/mttime’s past year of commit activity
  Time Domain Moment Tensor Inversion in Python

  pythoninversionseismology+ 2

  pythoninversionseismologyearthquakeswaveforms

  Python

  •

  Other

  •2424 forks•7070 stars•44 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• paraview_mcp

  Public
  ParaView-MCP integrates multimodal LLMs with ParaView via Model Context Protocol, enabling natural language control of scientific visualizations. The agent obse…

  Python

  •

  BSD 3-Clause "New" or "Revised" License

  •1616 forks•4343 stars•11 issue•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• llnl.github.io

  Public

  llnl/llnl.github.io’s past year of commit activity
  Public home for LLNL software catalog

  javascriptjekyllwebsite+ 3

  javascriptjekyllwebsitecatalogportalgov

  JavaScript

  •

  MIT License

  •5858 forks•6363 stars•1313 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• quandary

  Public

  llnl/quandary’s past year of commit activity
  Optimal control for open quantum systems

  applications

  applications

  C++

  •

  MIT License

  •1515 forks•5757 stars•77 issues•55 pull requests•Updated Apr 22, 2026Apr 22, 2026

• sundials

  Public

  llnl/sundials’s past year of commit activity
  Official development repository for SUNDIALS - a SUite of Nonlinear and DIfferential/ALgebraic equation Solvers. Pull requests are welcome for bug fixes and min…

  hpcsolverparallel-computing+ 9

  hpcsolverparallel-computingscientific-computinghigh-performance-computingsensitivity-analysistime-integrationode-solverdae-solvernonlinear-equation-solver+ 2

  C

  •

  BSD 3-Clause "New" or "Revised" License

  •167167 forks•648648 stars•3232 issues•1717 pull requests•Updated Apr 22, 2026Apr 22, 2026

• repligit

  Public

  llnl/repligit’s past year of commit activity
  A Git client for mirroring multiple remotes without storing state

  githubgitstateless+ 1

  githubgitstatelessmirroring

  Python

  •

  Apache License 2.0

  •44 forks•55 stars•11 issue•11 pull request•Updated Apr 21, 2026Apr 21, 2026