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

stylized brain image superimposed over wires connecting supercomputer racks


Source: YouTube

Video: Igniting scientific discovery with AI and supercomputing

LLNL’s fusion ignition breakthrough, more than 60 years in the making, was enabled by a combination of traditional fusion target design methods, HPC, and AI techniques.

AI/ML | CogSim/AI/ML Hardware | Computational Science | Data Science | Lasers and Optics | Multimedia | Scientific ML

artist’s rendering of graphics on the outside of the Tuolumne supercomputer


Source: LLNL Computing

Road to El Capitan 6: Modern compilers

Compilers translate human-programmable source code into machine-readable code. Building a compiler is especially challenging in the exascale era.

Compiler Technology | Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Programming Languages and Models

diagram showing many colored boxes (denoting software packages) connected by complex lines (denoting dependency relationships)


Source: LLNL Computing

Road to El Capitan 7: Packaging for everyone

Backed by Spack’s robust functionality, the Packaging Working Group manages the relationships between user software and system software.

Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Open-Source Software | Software Build and Installation

Judy Hill presents at a lectern to an auditorium of people


Source: LLNL Computing

Road to El Capitan 10: Collaboration is key

The El Capitan Center of Excellence provides a conduit between national labs and commercial vendors, ensuring that the exascale system will meet everyone’s needs.

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

nine people stand as a group in front of the Sierra supercomputer


Source: LLNL Computing

Road to El Capitan 8: Prepping for performance

The Tools Working Group delivers debugging, correctness, and performance analysis solutions at an unprecedented scale.

Debugging and Correctness | Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Performance, Portability, and Productivity

looking down a row of racks with exposed wires, three people install components of El Capitan


Source: LLNL Computing

Road to El Capitan 9: Messaging and math

The advent of accelerated processing units presents new challenges and opportunities for teams responsible for network interconnects and math libraries.

Exascale | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Networking and Interconnects | Programming Languages and Models | Software Engineering | Software Libraries

Ulrike Yang photo


Source: LLNL News

LLNL’s Yang honored among 2024 SIAM Class of Fellows

The Society for Industrial and Applied Mathematics (SIAM) announced the selection of Lawrence Livermore National Laboratory (LLNL) computational mathematician Ulrike Meier Yang as one of the 2024 Class of SIAM Fellows, the highest honor the organization bestows on its members.

Awards | Careers | Computational Math | Solvers

Carol Woodward speaks to the audience


Source: LLNL News

WiDS Livermore conference attendees network, share research and absorb wisdom

With over 90 people in attendance, including those attending online and in person, the WiDS Livermore conference was once again successful in facilitating the exchange of information and fresh idea

Careers | Data Science | Community | Events | Outreach

Todd's portrait next to the PTW logo


Source: LLNL News

Todd Gamblin named to HPCwire’s 'People to Watch' list for 2024

The high performance computing publication HPCwire has selected LLNL computer scientist Todd Gamblin as one of its “People to Watch” in HPC for 2024. The program recognized 12 HPC professionals who “play leading roles in driving innovation within their particular fields, making significant contributions to society as a whole.”

Careers | HPC Systems and Software

a person connects wires inside the supercomputer's racks


Source: Pleasanton Weekly

LLNL set to deploy world’s fastest supercomputer this year

The system will enable researchers from the National Nuclear Security Administration weapons design laboratories to create models and run simulations, previously considered challenging, time-intensive or impossible, for the maintenance and modernization of the United States’ nuclear weapons stockpile.

Emerging Architectures | Exascale | HPC Systems and Software

simulation of a hurricane in bright colors on a dark background


Source: YouTube

Video: Predicting climate change impacts on infrastructure

By taking weather variables such as wildfire, flooding, wind, and sunlight that directly impact the electrical grid into consideration, researchers can improve electrical grid model projections for a more stable future.

AI/ML | Earth Systems | Computational Science | Critical Infrastructure | Cyber Security | Data Science | Multimedia

The Milky Way and night sky above Rubin Observatory's Auxiliary Telescope. The auxiliary telescope is at the lower left, and the night sky is sprinkled with stars. The denser area of the Milky Way extends upward on the right, bulging wider toward the top. Dark tendrils of dust clouds weave through the bulge.


Source: LLNL Computing

Cerebras components installed in one of the Lassen racks


Source: LLNL Computing

New research in time integration methods recognized at IEEE conference

Can novel mathematical algorithms help scientific simulations leverage hardware designed for machine learning? A team from LLNL’s Center for Applied Scientific Computing aimed to find out.

CogSim/AI/ML Hardware | Computational Math | Emerging Architectures | ODE Methods

WiDS Livermore logo of three women's silhouettes in profile


Source: Data Science Institute

WiDS Livermore returns for two events

The Lab is hosting two related WiDS events: First is a datathon on February 28, then the annual regional conference on March 13. These hybrid events are free and open to everyone.

Data Science | Community | Events | Outreach | Students

2024 Best Places to Work text with photo collage of employees


Source: LLNL News

LLNL makes Glassdoor’s 2024 ‘Best Places to Work’ list

The Lab has been honored with a Glassdoor Employees' Choice Award, recognizing the Best Places to Work in 2024. This is the fifth award LLNL has earned in Glassdoor’s award program since its inception in 2009.

Awards | Careers

Thirteen visiting students from Colorado College pose outdoors.


Source: LLNL Computing

Colorado College computer science students spend two immersive weeks at the Lab

Thirteen students traveled to Livermore in early December for a computer science course simulating pond ecology and evolution.

Biology/Biomedicine | Computational Science | Education | Events | Outreach | Students

Top row: two photos of a large building with a spire corrupted by glass blur and shot noise; bottom row: two multicolored rectangles (spectral heatmaps) corresponding to the photos


Source: LLNL Computing

Conference paper illuminates neural image compression

New research reveals subtleties in the performance of neural image compression methods, offering insights toward improving these models for real-world applications.

AI/ML | Computer Vision | Data Compression | Data Science

9x9 grid of people in video chat


Source: LLNL Computing

Computational math community gathers for annual workshop

The MFEM virtual workshop highlighted the project’s development roadmap and users’ scientific applications. The event also included Q&A, student lightning talks, and a visualization contest.

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

logo for girls who code national program


Source: LLNL Computing

LLNL continues to expand Girls Who Code outreach

Lawrence Livermore is celebrating nearly a decade of bringing the Girls Who Code program to local middle and high schools. Since standing up the effort in 2016, more than 900 students have participated in the clubs, and the offerings continue to expand.

Careers | Community | Education | Outreach | Students

Silhouettes of researchers monitoring many screens of data.


Source: LLNL Computing

Robust verification of control system enables NIF software updates

NIF Computing deploys regular updates to its computer control systems to ensure NIF continues to achieve ignition.

Computational Science | Lasers and Optics | Software Engineering | Software Quality Assurance

meeting attendees posed as a group outside UCLCC


Source: LLNL Computing

Meeting of the minds: advanced math for the exascale era

Hosted at LLNL, the Center for Efficient Exascale Discretizations’ annual event featured breakout discussions, more than two dozen speakers, and an evening of bocce ball.

Co-Design | Computational Math | Computational Science | Discrete Mathematics | Earth Systems | Emerging Architectures | Events | Exascale | HPC Systems and Software

3D simulation of a shock interaction that looks like a colorful cylinder peeling back at one end


Source: LLNL Computing

Flux team members posed as a group outside building 453


Source: LLNL Computing

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


Source: LLNL Computing

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

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

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

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

Dev Day logo showing three cartoon people wearing LLNL-branded clothing


Source: LLNL Computing

Developer Day returns for the sixth year

Computing’s annual Developer Day held a hybrid event on July 21 with lightning talks, a town hall discussion, and guest speakers.

Careers | Cyber Research | Cyber Security | Emerging Architectures | Events | Quantum Computing | Software Engineering | Software Quality Assurance

Sandia’s thunderbird logo on a blue background with interconnected lines across a map of the western U.S.


Source: LLNL Computing

Sandia leverages Livermore’s open-source software for new website

A Sandia National Laboratories team has adapted Livermore’s software.llnl.gov website to showcase their own open-source software. Both projects are developed and hosted on GitHub.

Collaborations | Open-Source Software | Software Engineering | Web Technologies

Corona supercomputer overlaid with LLNL logo and IPDPS "2022 virtual" logo


Source: LLNL Computing

IPDPS 2022 event calendar

LLNL participates in the International Parallel and Distributed Processing Symposium (IPDPS) on May 30 through June 3.

AI/ML | Computational Math | Data Science | Events | HPC Architectures | HPC Systems and Software | Programming Languages and Models | Resource and Workflow Management | Storage, File Systems, and I/O

square cutaway of rainbow-colored data reconstruction


Source: LLNL Computing

CASC team wins best paper at visualization symposium

Winning the best paper award at PacificVis 2022, a research team has developed a resolution-precision-adaptive representation technique that reduces mesh sizes, thereby reducing the memory and storage footprints of large scientific datasets.

AI/ML | Awards | Computational Math | Data Compression | Data Movement and Memory | Data Science | Discrete Mathematics | HPC Systems and Software | Open-Source Software

plot showing different colored particle trajectories in the x-z plane in a magnetic mirror


Source: LLNL Computing

5x5 grid of participants in video chat, with Kathleen in the middle of the top row


Source: LLNL Computing

Kathleen Shoga leads the way for SC21 Student Cluster Competition

With a history of student participation and committee service, LLNL computer scientist Kathleen Shoga chaired this year’s competition.

Cluster Management | Events | HPC Systems and Software | Outreach | Students

SC21 logo in green and orange


Source: LLNL Computing

SC21 event calendar

LLNL is participating in the 33rd annual Supercomputing Conference (SC21), which will be held both virtually and in St. Louis on November 14–19, 2021.

Data Science | Deep Learning | Emerging Architectures | Events | HPC Systems and Software

9x9 grid of workshop participants in video chat


Source: LLNL Computing

MFEM team hosts first community workshop

The MFEM software library provides high-order mathematical algorithms for large-scale scientific simulations. An October workshop brought together MFEM’s global user and developer community for the first time.

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

figure eight DO IT logo


Source: LLNL Computing

Just DO IT: new internship program introduces students to DevOps

Computing’s newest internship program focuses on DevOps methodologies. The inaugural class of 2021 built a persistent data services provisioning application that will soon assist real Livermore Computing users.

DevOps | Community | SDLC Methodologies | Software Applications | Software Engineering | Students

several people posed outside the 2019 conference venue on large GHC letters


Source: LLNL Computing

GHC21: Grace Hopper Celebration

Many LLNL women and allies attend Grace Hopper Celebration every year to learn, to network, and to be inspired.

Community | Events | Outreach

three people in video chat screens


Source: LLNL Computing

Summer hackathon tradition continues virtually

Each new season brings another hackathon, and Computing’s 2021 summer event took place on August 12–13.

Hackathons | HPC Systems and Software | Programming Languages and Models | Software Applications | Software Engineering | Students | Web Technologies

Kyle in video chat giving thumbs-up next to a slide showing the Dev Day morning agenda


Source: LLNL Computing

Dev Day makes the most of virtual format

Held virtually on July 15, our fifth annual Developer Day featured lightning talks, a technical deep dive, “quick takes” on remote-development resources, presentations about career paths, and a career development panel discussion.

Careers | Events | Open-Source Software | Software Applications | Software Engineering | Software Libraries | Web Technologies

screen shot of flier showing portraits of the panelists and moderator


Source: LLNL Computing

Career panel series kicks off with women in Computing leadership roles

More than 100 LLNL staff and students gathered virtually for the first session of a new career panel series inspired by the annual Women in Data Science conference and sponsored by the Data Science Institute.

Careers | Community | Outreach

supercomputer photo with an overlay of ISC logo and the slogan "shaping tomorrow"


Source: LLNL Computing

ISC21 event calendar

LLNL participates in the digital ISC High Performance Conference (ISC21) on June 24 through July 2.

Events | HPC Systems and Software | Performance, Portability, and Productivity | Software Build and Installation

drawing of a brain made up of network lines and a computer chip


Source: LLNL Computing

A winning strategy for deep neural networks

New research debuting at ICLR 2021 demonstrates a learning-by-compressing approach to deep learning that outperforms traditional methods without sacrificing accuracy.

AI/ML | Computational Math | Data Science | Deep Learning | ML Theory | Scientific ML

CASC and SIAMCSE logos side by side


Source: LLNL Computing

SIAM CSE21 event calendar

Our researchers will be well represented at the virtual SIAM Conference on Computational Science and Engineering (CSE21) on March 1–5. SIAM is the Society for Industrial and Applied Mathematics with an international community of more than 14,500 individual members.

Algorithms at Scale | Computational Math | Computational Science | Data Science | Deep Learning | Discrete Mathematics | Exascale | Fault Tolerance and Resilience | HPC Systems and Software | PDE Methods | Performance, Portability, and Productivity | Programming Languages and Models | UQ and Statistics

abstract graphic of a brain and network overlaid with the CASC logo


Source: LLNL Computing

CASC research in ML robustness debuts at AAAI conference

Three papers address feature importance estimation under distribution shifts, attribute-guided adversarial training, and uncertainty matching in graph neural networks.

AI/ML | Computational Math | Data Science | Deep Learning | ML Theory | Scientific ML | UQ and Statistics

simulation of air flow around a semi-truck


Source: LLNL Computing

CASC Newsletter | Vol 8 | August 2019

Highlights include perspectives on machine learning and artificial intelligence in science, data driven models, autonomous vehicle operations, and the OpenMP standard 5.0.

AI/ML | Computational Math | Computational Science | Data Science | Data-Driven Decisions | Debugging and Correctness | Deep Learning | HPC Systems and Software | Hydrodynamics | ML Theory | Programming Languages and Models | Scientific ML | Scientific Visualization

Todd Gamblin's image projected onto a screen as he presents awards


Source: LLNL Computing

CASC Newsletter | Vol 7 | December 2018

Highlights include debris and shrapnel modeling at NIF, scalable algorithms for complex engineering systems, magnetic fusion simulation, and data placement optimization on GPUs.

Computational Math | Computational Science | Data Movement and Memory | Discrete Mathematics | Exascale | HPC Systems and Software | Hybrid/Heterogeneous | Hydrodynamics | Lasers and Optics | Materials and Manufacturing | Mathematical Optimization | PDE Methods | Solvers

Abstract graphic of scientific images with progression shown from bottom left to top right


Source: LLNL Computing

CASC Newsletter | Vol 6 | August 2018

Highlights include CASC director Jeff Hittinger's vision for the center as well as recent work with PruneJuice DataRaceBench, Caliper, and SUNDIALS.

Computational Math | Data Science | Debugging and Correctness | Exascale | HPC Architectures | HPC Systems and Software | ODE Methods | Open-Source Software | Programming Languages and Models | Resource and Workflow Management | Solvers

rayleigh taylor simulation done on Sierra


Source: LLNL Computing

screen shot of SQL schema


Source: LLNL Computing

hydrodynamics simulation


Source: LLNL Computing

spherical ZFP images showing progression of in-line floating point compression


Source: LLNL Computing

CASC Newsletter | Vol 2 | July 2017

Highlights include the directorate's annual external review, machine learning for ALE simulations, CFD modeling for low-carbon solutions, seismic modeling, and an in-line floating point compression tool.

AI/ML | Computational Math | Computational Science | Data Compression | Data Science | Discrete Mathematics | Exascale | Hydrodynamics | Open-Source Software | Seismology