Our research projects vary in size, scope, and duration, but they share a focus on developing tools and methods that help LLNL deliver on its missions to the nation and, more broadly, advance the state of the art in scientific HPC. Projects are organized here in three ways: Active projects are those currently funded and regularly updated. Legacy projects are no longer actively developed. The A-Z option sorts all projects alphabetically, both active and legacy.

Active | A-Z | Legacy

Preparing Codes for Exascale

Advanced Architecture and Portability Specialists

LLNL's Advanced Simulation Computing program formed the Advanced Architecture and Portability Specialists team to help LLNL code teams identify and implement optimal porting strategies.


Providing Reproducibility for Uncovering Non-Deterministic Errors in Runs on Supercomputers

The PRUNERS Toolset offers four novel debugging and testing tools to assist programmers with detecting, remediating, and preventing errors in a coordinated manner.


Non-Intrusive Uncertainty Quantification

The flourishing of simulation-based scientific discovery has also resulted in the emergence of the UQ discipline, which is essential for validating and verifying computer models.



Low-Overhead Wrapper Library

PnMPI is a thin, low-overhead wrapper library that is automatically generated from mpi.h file and that can be linked by default.



Computing Electronic Structures at the Quantum Level

LLNL’s version of Qbox, a first-principles molecular dynamics code, will let researchers accurately calculate bigger systems on supercomputers.


Scalable Quantum Optimal Control

Quandary is an open-source C++ package for optimal control of quantum systems on classical high performance computing platforms.


Quantum Molecular Dynamics

Scalable Simulations and Algorithms with Reduced Complexity

A new algorithm for use with first-principles molecular dynamics codes enables the number of atoms simulated to be proportional to the number of processors available.


Rapid Application Development via an Institutional Universal Software Stack

The RADIUSS project aims to lower cost and improve agility by encouraging adoption of our core open-source software products for use in institutional applications.

RAJA Portability Suite

Enabling Performance Portable CPU and GPU HPC Applications

A Livermore-developed programming approach helps software to run on different platforms without major disruption to the source code.

ROSE Compiler

Robust Analysis, Debugging, and Optimization Capabilities

ROSE, an open-source project maintained by Livermore researchers, provides easy access to complex, automated compiler technology and assistance.


Structured Adaptive Mesh Refinement Application Infrastructure

The SAMRAI library is the code base in CASC for exploring application, numerical, parallel computing, and software issues associated with structured adaptive mesh refinement.



Scientific Data Mining

Drawing from data mining, image and video processing, statistics, and pattern recognition, these computational tools improve the way scientists extract useful information from data.


Scalable Checkpoint/Restart for MPI

With SCR, jobs run more efficiently, recover more work upon failure, and reduce load on critical shared resources.


Software Development Resource Center

The Software Development Resource Center connects developers across LLNL through best practices in software tools, development methodologies, DevOps, security compliance, and more.

Serpentine Wave Propagation

Advanced Finite Difference Methods

These methods for solving hyperbolic wave propagation problems allow for complex geometries, realistic boundary and interface conditions, and arbitrary heterogeneous material properties.



Visualization of Large Terrains Made Easy

SOAR (Stateless, One-pass Adaptive Refinement) is a view-dependent mesh refinement and rendering algorithm.


A Flexible Package Manager for HPC Software

Livermore builds an open-source community around its award-winning HPC package manager.



Integrated Parallel Microbenchmark Suite

Sphinx, an integrated parallel microbenchmark suite, consists of a harness for running performance tests and extensive tests of MPI, Pthreads and OpenMP.


Scalable Shared Library Loading

Spindle improves the library-loading performance of dynamically linked HPC applications by plugging into the system’s dynamic linker and intercepting its file operations.


Data-Driven Modeling and Analysis

StarSapphire is a collection of scientific data mining projects focusing on the analysis of data from scientific simulations, observations, and experiments.


Discovering Supercomputers' Code Errors

LLNL’s Stack Trace Analysis Tool helps users quickly identify errors in code running on today’s largest machines.


SUite of Nonlinear and DIfferential/ALgebraic Equation Solvers

This project solves initial value problems for ODE systems, sensitivity analysis capabilities, additive Runge-Kutta methods, DAE systems, and nonlinear algebraic systems.


Taurus Environmental Information Management System

TEIMS manages collaborative tasks, site characterization, risk assessment, decision support, compliance monitoring, and regulatory reporting for the Environmental Restoration Department.


Tracking Space Debris

Testbed Environment for Space Situational Awareness software helps to track satellites and space debris and prevent collisions.