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

Math for Data Mining

Improved Matrix Factorization Algorithms

Newly developed mathematical techniques reveal important tools for data mining analysis.

Memory-Centric Architectures

Exploiting Emerging Persistent Memory

A new, complex memory/storage hierarchy is emerging, with persistent memories offering greatly expanded capacity, and augmented by DRAM/SRAM cache and scratchpads to mitigate latency.

MFEM

Scalable Finite Element Discretization Library

The open-source MFEM library enables application scientists to quickly prototype parallel physics application codes based on PDEs discretized with high-order finite elements.

Legacy

MPI_T

Tools for MPI 3.0

MPI_T is an interface for tools introduced in the 3.0 version of MPI. The interface provides mechanisms for tools to access and set performance and control variables that are exposed by an MPI…

Legacy

NSDE

Nonlinear Solvers and Differential Equations

The NSDE project is focused on research and development of nonlinear solvers and sensitivity analysis techniques for nonlinear, time-dependent, and steady-state partial differential equations.

Legacy

ODEPACK

Fortran ODE Solvers

ODEPACK is a collection of Fortran solvers for the initial value problem for ordinary differential equation systems. The collection is suitable for both stiff and nonstiff systems and includes…

Parallel Software Development Tools

R&D for Exascale Architectures

Users need tools that address the bottlenecks of exascale machines, work seamlessly with the programming models on the target machines, scale to the full size of the machine, provide the necessary…

PAVE

Performance Analysis and Visualization at Exascale

Performance analysis of parallel scientific codes is becoming increasingly difficult, and existing tools fall short in revealing the root causes of performance problems. We have developed the HAC…

PDES

Modeling Complex, Asynchronous Systems

PDES focuses on models that can accurately and effectively simulate California’s large-scale electric grid.

Legacy

Phase-Field Modeling

Real-Space Representation in Scalable Simulation Code

Livermore researchers have developed an algorithm for the numerical solution of a phase-field model of microstructure evolution in polycrystalline materials. The system of equations includes a…

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.

PRUNERS

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.

PSUADE

Non-Intrusive Uncertainty Quantification

The flourishing of simulation-based scientific discovery has also resulted in the emergence of the verification and validation (V&V) and uncertainty quantification (UQ) disciplines. The goal…

Legacy

P^nMPI

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.

Legacy

Qbox

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.

Legacy

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.

RADIUSS

Rapid Application Development via an Institutional Universal Software Stack

The RADIUSS (Rapid Application Development via an Institutional Universal Software Stack) project aims to lower cost and improve agility by encouraging adoption of our core open-source software…

RAJA

Managing Application Portability for Next-Generation Platforms

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.

SAMRAI

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.

Legacy

Sapphire

Scientific Data Mining

By applying and extending ideas from data mining, image and video processing, statistics, and pattern recognition, we are developing a new generation of computational tools and techniques that are…

SCR

Scalable Checkpoint/Restart for MPI

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

Serpentine Wave Propagation

Advanced Finite Difference Methods

The Serpentine project develops advanced finite difference methods for solving hyperbolic wave propagation problems. Our approach is based on solving the governing equations in second order…

Legacy

SOAR

Visualization of Large Terrains Made Easy

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