Repositories list

• 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 minor changes.

  hpcsolverparallel-computing+ 9scientific-computinghigh-performance-computingsensitivity-analysistime-integrationode-solverdae-solvernonlinear-equation-solver+ 2

  C

  •

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

  •160•620•29•7•Updated Jan 9, 2026Jan 9, 2026

• CHAI

  Public

  llnl/CHAI’s past year of commit activity
  Copy-hiding array abstraction to automatically migrate data between memory spaces

  cppgpumemory-management+ 5bltportabilityrajadata-abstractionradiuss

  C++

  •

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

  •23•110•23•15•Updated Jan 9, 2026Jan 9, 2026

• microbenchmarks

  Public

  llnl/microbenchmarks’s past year of commit activity
  C++

  •

  Apache License 2.0

  •0•0•0•0•Updated Jan 9, 2026Jan 9, 2026

• ATS

  Public

  llnl/ATS’s past year of commit activity
  ATS - Automated Testing System - is an open-source, Python-based tool for automating the running of tests of an application across a broad range of high performance computers.

  Python

  •

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

  •6•9•5•2•Updated Jan 9, 2026Jan 9, 2026

• ygm

  Public

  llnl/ygm’s past year of commit activity
  C++

  •

  Other

  •27•39•6•5•Updated Jan 9, 2026Jan 9, 2026

• axom

  Public

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

  c-plus-pluscppfortran+ 5hpcparallel-computingllnlradiussapp-infrastructure

  C++

  •

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

  •32•180•229•18•Updated Jan 9, 2026Jan 9, 2026

• hiop

  Public

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

  hpcoptimizationsolver+ 17mpicudaconstrained-optimizationnonlinear-programming-algorithmsnonlinear-optimizationnonlinear-programminginterior-point-method+ 10

  C++

  •

  Other

  •45•225•37•10•Updated Jan 9, 2026Jan 9, 2026

• RAJAPerf

  Public

  llnl/RAJAPerf’s past year of commit activity
  RAJA Performance Suite

  c-plus-plusperformancecpp+ 4programming-modelrajallnlproxy-application

  Jupyter Notebook

  •

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

  •51•128•61•25•Updated Jan 9, 2026Jan 9, 2026

• llnl.github.io

  Public

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

  javascriptjekyllwebsite+ 3catalogportalgov

  JavaScript

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  MIT License

  •58•61•14•0•Updated Jan 9, 2026Jan 9, 2026

• session-recorder

  Public

  llnl/session-recorder’s past year of commit activity
  Allows you to record a browser and voice, and produce a session. Inspired by Playwright's repo.

  TypeScript

  •

  MIT License

  •0•0•0•0•Updated Jan 9, 2026Jan 9, 2026

• ERF

  Public

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

  C++

  •

  Other

  •57•1•0•0•Updated Jan 9, 2026Jan 9, 2026

• smith

  Public

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

  cppsimulationfinite-elements+ 2proxy-applicationmath-physics

  C++

  •

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

  •34•221•136•13•Updated Jan 9, 2026Jan 9, 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

  Python

  •

  Apache License 2.0

  •42•63•132•27•Updated Jan 9, 2026Jan 9, 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+ 1simulation

  C++

  •

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

  •23•43•1•0•Updated Jan 9, 2026Jan 9, 2026

• conduit

  Public

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

  pythonyamljson+ 8cppfortranhpcscientific-computinghdf5data-managementllnl+ 1

  C++

  •

  Other

  •69•235•188•4•Updated Jan 9, 2026Jan 9, 2026

• Caliper

  Public

  llnl/Caliper’s past year of commit activity
  Caliper is an instrumentation and performance profiling library

  performancecpphpc+ 7instrumentationtraceperformance-analysisperformance-monitoringcaliperannotation-apisradiuss

  C++

  •

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

  •74•396•27•13•Updated Jan 9, 2026Jan 9, 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

  •0•3•20•2•Updated Jan 9, 2026Jan 9, 2026

• radiuss-docker

  Public

  llnl/radiuss-docker’s past year of commit activity
  Automated builds of Docker container bases for RADIUSS projects

  Dockerfile

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  MIT License

  •0•2•4•1•Updated Jan 8, 2026Jan 8, 2026

• mphys-surrogate-model

  Public

  llnl/mphys-surrogate-model’s past year of commit activity
  This repository contains python scripts for training latent-space machine learning representations of warm rain droplet microphysics

  Python

  •

  Other

  •0•0•0•0•Updated Jan 8, 2026Jan 8, 2026

• RAJA

  Public

  llnl/RAJA’s past year of commit activity
  RAJA Performance Portability Layer (C++)

  c-plus-pluscppparallel-computing+ 6bltprogramming-modelportabilityrajallnlradiuss

  C++

  •

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

  •110•560•208•38•Updated Jan 8, 2026Jan 8, 2026

• UEDGE

  Public

  llnl/UEDGE’s past year of commit activity
  2D fluid simulation of plasma and neutrals in magnetic fusion devices

  simulationmath-physics

  Fortran

  •

  GNU Lesser General Public License v2.1

  •22•44•16•5•Updated Jan 8, 2026Jan 8, 2026

• Umpire

  Public

  llnl/Umpire’s past year of commit activity
  An application-focused API for memory management on NUMA & GPU architectures

  cpphpcgpu+ 4memory-managementbltportabilityradiuss

  C++

  •

  MIT License

  •61•391•20•9•Updated Jan 8, 2026Jan 8, 2026

• ContinuationSolvers

  Public

  llnl/ContinuationSolvers’s past year of commit activity
  C++

  •

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

  •1•0•1•0•Updated Jan 8, 2026Jan 8, 2026

• UETOOLS

  Public

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

  •

  GNU Lesser General Public License v2.1

  •4•4•0•0•Updated Jan 8, 2026Jan 8, 2026

• pEyeON

  Public
  Repository for the EyeON file manifest tool

  Python

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  MIT License

  •1•4•5•4•Updated Jan 8, 2026Jan 8, 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 dynamics simulations of atomistic systems.

  cppsimulationmolecular-dynamics+ 1applications

  C++

  •

  Other

  •15•43•11•8•Updated Jan 8, 2026Jan 8, 2026

• SAMRAI

  Public

  llnl/SAMRAI’s past year of commit activity
  Structured Adaptive Mesh Refinement Application Infrastructure - a scalable C++ framework for block-structured AMR application development

  cpphpcparallel-computing+ 5scientific-computingamradaptive-mesh-refinementmath-physicsradiuss

  C++

  •

  Other

  •85•237•52•5•Updated Jan 8, 2026Jan 8, 2026

• uberenv

  Public

  llnl/uberenv’s past year of commit activity
  Automates using spack to build and deploy software

  shellbuild-tools

  Shell

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  Other

  •12•29•32•4•Updated Jan 8, 2026Jan 8, 2026

• INGRID

  Public

  llnl/INGRID’s past year of commit activity
  Interactive Grid Generator for Tokamak Boundary Region

  Python

  •

  MIT License

  •9•10•9•6•Updated Jan 8, 2026Jan 8, 2026

• OGhidra

  Public

  llnl/OGhidra’s past year of commit activity
  OGhidra bridges Large Language Models (LLMs) via Ollama with the Ghidra reverse engineering platform, enabling AI-driven binary analysis through natural language. Interact with Ghidra using conversational queries and automate complex reverse engineering workflows.

  Python

  •

  Other

  •6•67•0•1•Updated Jan 8, 2026Jan 8, 2026