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
Legacy

AutomaDeD

Diagnosing Performance and Correctness Faults

AutomaDeD is a tool that automatically diagnoses performance and correctness faults in MPI applications. It has two major functionalities: identifying abnormal MPI tasks and code regions and…

Legacy

Babel

High-Performance Language Interoperability

Babel is a high-performance language interoperability tool. The project is mainly developed at the Center for Applied Scientific Computing (CASC) LLNL. Babel started as an internal Lab Directed…

Legacy

ExReDi

Extreme Resilient Discretization

The Extreme Resilient Discretization project (ExReDi) was established to address these challenges for algorithms common for fluid and plasma simulations.

Legacy

First-Principles Molecular Dynamics

O(N) Complexity Algorithm

LLNL researchers are developing a truly scalable first-principles molecular dynamics algorithm with O(N) complexity and controllable accuracy, capable of simulating systems of sizes that were…

Legacy

GEFIE-QUAD

Laser Grating Simulation

The code GEFIE-QUAD (gratings electric field integral equation on quadrilateral grids) is a first-principles simulation method to model the interaction of laser light with diffraction…

Legacy

GOLLNLP

Improving Efficiency and Robustness of the U.S. Electrical Power Grid using HPC

In response to a DOE grid optimization challenge, the LLNL-led gollnlp team is developing the mathematical, computational, and software components needed to solve problems of the real-world power…

Legacy

GREMLINs

Emulating Exascale Conditions on Today's Platforms

To overcome the shortcomings of the analytical and architectural approaches to performance modeling and evaluation, we are developing techniques that emulate the behavior of anticipated future…

Legacy

HARVEY

Predictive Vascular Modeling of Blood Flow in Patient-Specific Geometries

Livermore researchers are enhancing HARVEY, an open-source parallel fluid dynamics application designed to model blood flow in patient-specific geometries.

Legacy

HZIP

Lossless Compression of Meshes

hzip 1.0.1 is a C++ library for lossless compression of structured and unstructured meshes composed of cells with hypercube topology.

Legacy

Interconnection Networks

Topology-Aware Task Mapping

As supercomputing power increases, the cost of communicating data both on- and off-node has become a critical factor affecting the overall performance of a parallel application. Livermore's…

Legacy

LOCAL

Locality-Optimizing Caching Algorithms and Layouts

The sheer size of data poses significant problems in all stages of the visualization pipeline, from offline pre-processing of simulation data, to interactive queries, to real-time rendering.…

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…

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…

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.

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…

Legacy

SOAR

Visualization of Large Terrains Made Easy

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

Legacy

Sphinx

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.

Legacy

Veritas

Validating Proxy Apps

Veritas provides a method for validating proxy applications to ensure that they capture the intended characteristics of their parents.

Legacy

VPC

Variable Precision Computing

Researchers develop innovative data representations and algorithms to provide faster, more efficient ways to preserve information encoded in data.