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645 repositories

Caliper
Public
Caliper is an instrumentation and performance profiling library
performance cpp hpc instrumentation trace performance-analysis performance-monitoring caliper annotation-apis radiuss
C++
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BSD 3-Clause "New" or "Revised" License
•76•398•27•13•Updated Feb 26, 2026Feb 26, 2026
benchpark
Public
An open collaborative repository for reproducible specifications of HPC benchmarks and cross site benchmarking environments
benchmark performance hpc
Python
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Apache License 2.0
•43•66•130•19•Updated Feb 26, 2026Feb 26, 2026
smith
Public
Smith is a high order nonlinear thermomechanical simulation code
cpp simulation finite-elements proxy-application math-physics
C++
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BSD 3-Clause "New" or "Revised" License
•36•224•140•16•Updated Feb 26, 2026Feb 26, 2026
units
Public
A run-time C++ library for working with units of measurement and conversions between them and with string representations of units and measurements
energy cpp conversion measurements unit-conversions si-units physical-units math-physics string-conversions
C++
•
BSD 3-Clause "New" or "Revised" License
•31•165•5•1•Updated Feb 26, 2026Feb 26, 2026
zero-rk
Public
Zero-order Reaction Kinetics (Zero-RK) is a software package that simulates chemically reacting systems in a computationally efficient manner.
application chemistry cpp simulation
C++
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BSD 3-Clause "New" or "Revised" License
•25•45•1•0•Updated Feb 26, 2026Feb 26, 2026
quandary
Public
Optimal control for open quantum systems
applications
C++
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MIT License
•15•57•7•4•Updated Feb 26, 2026Feb 26, 2026
RAJAPerf
Public
RAJA Performance Suite
c-plus-plus performance cpp programming-model raja llnl proxy-application
Jupyter Notebook
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Other
•53•131•61•25•Updated Feb 26, 2026Feb 26, 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 min…
hpc solver parallel-computing scientific-computing high-performance-computing sensitivity-analysis time-integration ode-solver dae-solver nonlinear-equation-solver
C
•
BSD 3-Clause "New" or "Revised" License
•163•636•30•15•Updated Feb 26, 2026Feb 26, 2026
spheral
Public
python simulations sph hydrodynamics astronomical-algorithms hydrodynamic-modeling llnl meshfree simulations-physics math-physics
C++
•
BSD 3-Clause "New" or "Revised" License
•23•74•35•10•Updated Feb 26, 2026Feb 26, 2026
quandary-examples
Public
Examples for Quandary
Jupyter Notebook
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MIT License
•0•1•0•2•Updated Feb 26, 2026Feb 26, 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 dyn…
cpp simulation molecular-dynamics applications
C++
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Other
•15•45•10•8•Updated Feb 25, 2026Feb 25, 2026
radiuss-spack-configs
Public
Shared spack configurations for RADIUSS projects
radiuss
Python
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MIT License
•11•3•0•1•Updated Feb 25, 2026Feb 25, 2026
axom
Public
CS infrastructure components for HPC applications
c-plus-plus cpp fortran hpc parallel-computing llnl radiuss app-infrastructure
C++
•
Other
•33•182•227•20•Updated Feb 25, 2026Feb 25, 2026
APBuilder
Public
Python tool to create AC2Dr atmosphere profiles from weather models.
geophysics atmospheric-science apbuilder
Python
•
Other
•0•1•0•0•Updated Feb 25, 2026Feb 25, 2026
Spindle
Public
Scalable dynamic library and python loading in HPC environments
performance radiuss
C
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Other
•32•104•26•6•Updated Feb 25, 2026Feb 25, 2026
CHAI
Public
Copy-hiding array abstraction to automatically migrate data between memory spaces
cpp gpu memory-management blt portability raja data-abstraction radiuss
C++
•
BSD 3-Clause "New" or "Revised" License
•23•111•16•17•Updated Feb 25, 2026Feb 25, 2026
RAJA
Public
RAJA Performance Portability Layer (C++)
c-plus-plus cpp parallel-computing blt programming-model portability raja llnl radiuss
C++
•
Other
•112•567•207•40•Updated Feb 25, 2026Feb 25, 2026
merlin
Public
Machine Learning for HPC Workflows
workflow machine-learning big-data simulation hpc redis-server workflows radiuss celery-workers
Python
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Other
•30•145•38•3•Updated Feb 25, 2026Feb 25, 2026
ATS
Public
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 perfor…
Python
•
BSD 3-Clause "New" or "Revised" License
•6•9•4•0•Updated Feb 25, 2026Feb 25, 2026
DD-NM-ROM
Public
Python
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MIT License
•5•16•0•0•Updated Feb 25, 2026Feb 25, 2026
ERF
Public
Energy Research and Forecasting Model
C++
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Other
•57•1•0•0•Updated Feb 25, 2026Feb 25, 2026
HPC-Tutorials
Public
Future home of hpc-tutorials.llnl.gov
tutorial
C
•
MIT License
•126•249•2•2•Updated Feb 25, 2026Feb 25, 2026
Jekyll-LLNL-Theme
Public
LLNL Themed Jekyll Template
HTML
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MIT License
•6•2•4•0•Updated Feb 25, 2026Feb 25, 2026
MacPatch
Public
Software & Patch management for macOS
Objective-C
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Other
•15•87•0•0•Updated Feb 25, 2026Feb 25, 2026
llnl.github.io
Public
Public home for LLNL software catalog
javascript jekyll website catalog portal gov
JavaScript
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MIT License
•58•63•14•0•Updated Feb 25, 2026Feb 25, 2026
SEAMsurrogates
Public
Shared Education in Artificial intelligence and Machine learning (SEAM) professional development course on "Surrogate Modeling and Design Optimization," as desi…
Python
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Other
•1•5•6•1•Updated Feb 25, 2026Feb 25, 2026
conduit
Public
Simplified Data Exchange for HPC Simulations
python yaml json cpp fortran hpc scientific-computing hdf5 data-management llnl
C++
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Other
•70•240•194•7•Updated Feb 25, 2026Feb 25, 2026
Umpire
Public
An application-focused API for memory management on NUMA & GPU architectures
cpp hpc gpu memory-management blt portability radiuss
C++
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MIT License
•63•397•19•12•Updated Feb 24, 2026Feb 24, 2026
benchmarks
Public
Related to benchmarking activities for Advanced Simulation & Computing (ASC) Advanced Technology Systems
Creative Commons Attribution 4.0 International
•0•5•15•1•Updated Feb 24, 2026Feb 24, 2026
SAMRAI
Public
Structured Adaptive Mesh Refinement Application Infrastructure - a scalable C++ framework for block-structured AMR application development
cpp hpc parallel-computing scientific-computing amr adaptive-mesh-refinement math-physics radiuss
C++
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Other
•85•239•52•5•Updated Feb 24, 2026Feb 24, 2026