High-Performance Computing

What We Do

We are global leaders in high-performance computing (HPC) enabled by our powerful and efficient modeling and simulation ecosphere that integrates multiphysics models, cognitive simulation, multiscale modeling, and advanced computing architectures.

Meet Our People

Brian Ryujin portrait

Brian Ryujin

Computer Scientist

“When I started here, I was struck by our community’s expertise and excited by the collaborative environment. I am thankful for the generosity of my colleagues, who have fostered my growth with their experience and knowledge. It is satisfying to be both teacher and student, growing together as we continually prepare for our next challenge.”

Jane Herriman portrait

Jane Herriman

Livermore Computing Consultant

“I like working at LLNL because of the opportunities for growth. I feel the Lab is willing to invest in me to help increase my impact over time, and I see many different directions my career could go.”

Adam Bertsch portrait

Adam Bertsch

Principal HPC Strategist

“We are perennially fielding some of the fastest computers in the world here at the Lab, but that isn’t what enables our success. The drive to understand and deliver on our mission—expressed by everyone I work with—is the key to our success, and it’s what energizes me at work every day.”

Join Our Team

Making Our Mark Through Game-Changing Projects

Gearing up for a new era of computational capability

LLNL is preparing for the arrival of El Capitan, National Nuclear Security Administration's (NNSA's) first exascale supercomputer with the power to perform more than 1018 calculations per second. El Capitan will produce high-fidelity, 3D simulations beyond what’s possible now, which will be applied to all mission spaces including stockpile stewardship, weapon modernization, and advanced manufacturing processes, among others.

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3D Illustration of El Capitan server room

Developing multiphysics simulation capabilities for next-gen computing

To meet the challenge posed by exascale computing, LLNL is developing next-generation multiphysics simulation capabilities for national security applications under the Multiphysics on Advanced Platforms Project (MAPP). Developing multiphysics codes capable of meeting NNSA’s various simulation needs is a daunting task. So too is developing these codes to support robust and accurate simulation workflows with increased automation and enable innovations such as machine learning and artificial intelligence to be easily explored and incorporated, all while scaling to pre-exascale and exascale computers. To accomplish this ambitious goal, we have embraced two key themes: use of high-order numerical methods and a modular approach to code development.

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computer simulation image

Maximizing modern scientific throughput

Flux, a next-generation workload management software framework for supercomputing, provides innovative solutions for modern workflows for many scientific and engineering disciplines, including stockpile stewardship activities, engineering and design optimization, and large artificial intelligence workflows.

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Flux simulation image

Specialized Software

Explore some of the integrated codes and libraries that enable SD to deliver on its stockpile stewardship mission, while simultaneously advancing discoveries in HPC.

State-of-the-Art Computing Facilities

LLNL houses many impressive supercomputers including Sierra, and soon, El Capitan.