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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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zfp

Public

Compressed numerical arrays that support high-speed random access

C++ 849 176

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 634 163

RAJA

Public

RAJA Performance Portability Layer (C++)

C++ 567 112

Caliper

Public

Caliper is an instrumentation and performance profiling library

C++ 398 76

Umpire

Public

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

C++ 397 62

blt

Public

A streamlined CMake build system foundation for developing HPC software

C++ 284 65

Showing 10 of 646 repositories

RAJA Public
RAJA Performance Portability Layer (C++)
llnl/RAJA’s past year of commit activity
C++ 567 112 207 (7 issues need help) 40 UpdatedFeb 20, 2026
quandary Public
Optimal control for open quantum systems
llnl/quandary’s past year of commit activity
C++ 57MIT 15 7 5 UpdatedFeb 20, 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 66Apache-2.0 43 130 21 UpdatedFeb 20, 2026
dftracer Public
A multi-level dataflow tracer for capturing I/O calls from workflows.
llnl/dftracer’s past year of commit activity
Jupyter Notebook 20MIT 13 18 3 UpdatedFeb 20, 2026
SEAMsurrogates Public
Shared Education in Artificial intelligence and Machine learning (SEAM) professional development course on "Surrogate Modeling and Design Optimization," as designed at LLNL.
llnl/SEAMsurrogates’s past year of commit activity
Python 5 1 6 0 UpdatedFeb 20, 2026
conduit Public
Simplified Data Exchange for HPC Simulations
llnl/conduit’s past year of commit activity
C++ 240 70 198 8 UpdatedFeb 20, 2026
axom Public
CS infrastructure components for HPC applications
llnl/axom’s past year of commit activity
C++ 182 33 227 (2 issues need help) 18 UpdatedFeb 20, 2026
spheral Public
llnl/spheral’s past year of commit activity
C++ 74BSD-3-Clause 23 35 (1 issue needs help) 10 UpdatedFeb 20, 2026
llnl.github.io Public
Public home for LLNL software catalog
llnl/llnl.github.io’s past year of commit activity
JavaScript 63MIT 58 14 0 UpdatedFeb 20, 2026
romweb Public
Reduced order model (ROM) website
llnl/romweb’s past year of commit activity
Less 20 0 0 UpdatedFeb 20, 2026