LLNL Computing’s ground-breaking research and development activities, innovative technologies, and world-class staff are often featured in various media outlets.

three people install an early access system rack in the machine room


Source: LLNL Computing

Road to El Capitan 2: All the moving parts

Siting a supercomputer requires close coordination of hardware, software, applications, and Livermore Computing facilities.

Co-Design | Emerging Architectures | Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Performance, Portability, and Productivity | Resource and Workflow Management

the Systems Software and Security group standing in front of the Sierra supercomputer


Source: LLNL Computing

Road to El Capitan 3: The right operating system

The Tri-Lab Operating System Stack (TOSS) ensures other national labs’ supercomputing needs are met.

Co-Design | Collaborations | Emerging Architectures | Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous

Flux team members posed as a group outside building 453


Source: LLNL Computing

El Capitan supercomputer side view


Source: LLNL Computing

Road to El Capitan 1: It takes a village

Livermore Computing is making significant progress toward siting the NNSA’s first exascale supercomputer.

Co-Design | Collaborations | Emerging Architectures | Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous

Pythagoras and Bronis hoist a Rabbit node into a rack of the Hetchy early access system


Source: LLNL Computing

Summer interns work on their hackathon projects. A water bottle with a hackathon sticker on it is in the photo’s foreground.


Source: LLNL Computing

Summer hackathon addresses Lab's many acronyms, plus other projects (SHALMA-POP)

This season’s hackathon featured Lab improvement projects, work tasks, and personal enrichment.

Hackathons | Software Engineering | Students | Web Technologies

Real scanning electron microscope image of TATB powder, alongside a hypothetical scanning electron microscope image of TATB powder made to optimize its peak stress. The hypothetical image is made of smaller grains.


Source: LLNL Computing

Explainable artificial intelligence can enhance scientific workflows

Using explainable artificial intelligence techniques can help increase the reach of machine learning applications in materials science, making the process of designing new materials much more efficient.

AI/ML | Computational Science | Data Science | Materials and Manufacturing | ML Theory | Scientific ML | Scientific Visualization

rainbow-colored Mercator-like map of the world with red zones near the equator and blue zones near the poles


Source: LLNL Computing

VisIt project team adds color usability improvements

The Lab’s workhorse visualization tool provides expanded color map features, including for visually impaired users.

Data Science | Open-Source Software | Scientific Visualization | Software Engineering

brightly multi-colored circle on a dark blue background


Source: LLNL Computing

CASC Newsletter | Vol 13 | July 2023

This issue highlights some of CASC’s contributions to making controlled laboratory fusion possible at the National Ignition Facility.

Collaborations | Computational Math | Data Science | Lasers and Optics | Scientific ML | Scientific Visualization | Transport

Developer Day attendees are looking down into a Sierra supercomputer cluster node.


Source: LLNL Computing

Developer Day returns, in person and squeakier than ever

2023’s Developer Day was a two-day event for the first time, balancing an all-virtual technical program with a fully in-person networking day.

Careers | Events | Open-Source Software | Software Applications | Software Engineering

Scattered fluffy clouds in the sky.


Source: LLNL Computing

Improving models of clouds and atmospheric turbulence

With simple mathematical modifications to a common model of clouds and turbulence, LLNL scientists and their collaborators helped minimize nonphysical results.

Collaborations | Computational Math | Computational Science | Earth Systems

Jacob Wahlgren is on stage accepting the Research Poster Award certificate


Source: LLNL Computing

Investigation of disaggregated memory systems wins poster award

Splitting memory resources in HPC between local nodes and a larger shared remote pool can help better support computational applications.

Awards | Data Movement and Memory | HPC Systems and Software | Hybrid/Heterogeneous

Ignacio Laguna and colleagues standing with the ISC 2023 Hans Meuer Award certificate.


Source: LLNL Computing

Best paper winner finds the sources of calculation inconsistencies

Updating a compiler can affect how code runs, leading to inconsistencies in outputs and creating problems for scientists. A new tool automatically finds the sources of these inconsistencies.

Awards | Compiler Technology | HPC Systems and Software | Open-Source Software

two workers in reflective vests look at a power plant under a sunset


Source: LLNL Computing

Unidentified employee (Ruth Kilby, possible) with IBM 704, November 1957


Source: LLNL Computing

A look back: women in early computing at LLNL

LLNL’s archives recount the contributions of women who developed code during the Lab's early decades.

Careers | Community | HPC Systems and Software | Programming Languages and Models

blue and red lattice structure on the left where blue indicates the lattice component that needs to be removed; black lattice structure on the right showing the optimized red portion of the left image


Source: LLNL Computing

black-and-white photo of Robert Hughes at his desk in the 1970s


Source: LLNL Computing

Ruby supercomputer under purple lighting


Source: LLNL Computing

7x8 grid of people in video chat


Source: LLNL Computing

MFEM workshop showcases application variety and broad impact

The second annual MFEM workshop brought together the project’s global user and developer community for technical talks, Q&A, and more.

Computational Math | Computational Science | Discrete Mathematics | Events | Open-Source Software | Outreach | PDE Methods | Software Libraries

a participant in the hackathon room examines the DeepRacer car


Source: LLNL Computing

Hackathon puts machine learning in the driver’s seat

In a time-trial competition, participants trained an autonomous race car with reinforcement learning algorithms.

AI/ML | Cloud Services | Data Science | Deep Learning | Hackathons | Information Technology | Scientific Cloud Computing

stock illustration of red blood cells inside a blood vessel


Source: LLNL Computing

CASC collaboration with Duke University wins best paper award

Presented at the 2022 International Conference on Computational Science, the team’s research introduces metrics that can improve the accuracy of blood flow simulations.

Awards | Biology/Biomedicine | Collaborations | Computational Science | Hydrodynamics

regular and winter hexagonal hackathon logos side by side


Source: LLNL Computing

Celebrating 10 years of hackathons

After 10 years and 33 hackathons, nothing can stop this beloved tradition.

Data Science | Hackathons | Software Engineering | Students