people clustered in and around the Department of Energy booth, which consists of large green and white circular structures with a demo station on the right side


Source: LLNL Computing

Computing advances highlighted at DOE’s SC25 exhibit booth

During the weeklong conference, attendees visiting the Department of Energy’s booth were treated to two technical demonstrations and a talk by LLNL staff.

AI/ML | Algorithms at Scale | Biology/Biomedicine | Computational Science | Containerization | Data Science | Events | Exascale | HPC Systems and Software | Lasers and Optics | Natural Language Processing | Resource and Workflow Management | Scientific ML

a person looking into a supercomputer cabinet with text overlay "what's hidden in the data!"


Source: YouTube

Video: How supercomputers are transforming research in cancer, dark matter, and seismology

Researchers are using LLNL’s unclassified supercomputers to delve into complex scientific questions such as uncovering how protein interactions are linked to cancer, shedding light on mysterious dark matter, and understanding the shifting dynamics of seismic waves.

Biology/Biomedicine | Collaborations | Computational Science | HPC Systems and Software | Multimedia | Seismology | Space Science

Lori Diachin on the main stage at SC25


Source: LLNL News

LLNL caps SC25 with HPC leadership, major science advances and artificial intelligence

LLNL’s presence, which included dozens of sessions, including tutorials, workshops, paper presentations and birds-of-a-feather meetings was felt across virtually every major event of the week.

AI/ML | Awards | Community | Computational Math | Computational Science | Data Science | Events | Exascale | HPC Systems and Software | Scientific ML

research team on stage accepting the award


Source: LLNL News

LLNL, UT & UCSD win Gordon Bell Prize with exascale tsunami forecasting

Widely viewed as the highest recognition in HPC, the Gordon Bell Prize recognizes innovations that push the limits of computational performance, scalability and scientific impact on pressing real-world problems.

Algorithms at Scale | Awards | Collaborations | Computational Math | Computational Science | Exascale | HPC Systems and Software | PDE Methods

collage of three simulations of rocket–rocket plume interactions


Source: LLNL News

Gordon Bell finalist team pushes scale of rocket simulation on El Capitan

Researchers used the exascale supercomputer El Capitan to perform the largest fluid dynamics simulation ever—surpassing one quadrillion degrees of freedom in a single computational fluid dynamics problem.

Algorithms at Scale | Computational Science | Exascale | HPC Systems and Software | Hydrodynamics

El Capitan and Tuloumne supercomputers


Source: LLNL News

El Capitan retains title as world’s fastest supercomputer on latest Top500 list

El Capitan once again claimed the top spot on the Top500 List of the world’s most powerful supercomputers, announced today at the 2025 International Conference for High Performance Computing, Networking, Storage and Analysis (SC25) conference in St. Louis.

Awards | Emerging Architectures | Exascale | HPC Architectures | HPC Systems and Software

Group of about 60 workshop attendees posed outside on the PSU campus


Source: LLNL Computing

Workshop features finite element advances and applications

Five years strong, the MFEM workshop fosters connection and collaboration among the computational math community.

Computational Math | Computational Science | Discrete Mathematics | Events | Exascale | HPC Systems and Software | Open-Source Software | PDE Methods | Software Libraries

diagram of interaction between ParaView and Claude


Source: Data Science Institute

ParaView-MCP levels the playing field for complex scientific visualization

A new study led by CASC researchers empowers users to interact with the application through natural-language and visual inputs instead of the typical graphic user interface, which can appear daunting for novice users.

AI/ML | Data Science | Natural Language Processing | Scientific Visualization

magazine cover with sample of inside pages


Source: Science & Technology Review

collage of detailed simulations and the El Capitan logo


Source: LLNL News

El Capitan revealing hidden worlds in previously unattainable high-fidelity simulations

From capturing the chaotic spray of molten metal to the turbulence of fluid flows, the exascale machine is revealing worlds that were previously beyond reach, and it’s doing so thanks to the close collaboration of hardware, software and science teams that makes LLNL uniquely equipped to lead in this space.

Computational Science | Emerging Architectures | Exascale | HPC Systems and Software | Hydrodynamics | Lasers and Optics

cylindrical HYDRA simulation in rainbow colors


Source: Science & Technology Review

Cracking the fusion codes

LLNL is home to the world’s most complete set of ICF modeling and simulation tools, encapsulating the intricacies of laser light interaction, electron and x-ray transport, nonequilibrium atomic physics, magnetohydrodynamics, and fusion burn.

Computational Science | HPC Systems and Software | Hydrodynamics | Lasers and Optics

Graphic of advanced, realtime tsunami forecasting system


Source: LLNL News

LLNL scientists explore real-time tsunami warning system on world’s fastest supercomputer

Scientists at LLNL have helped develop an advanced, real-time tsunami forecasting system—powered by El Capitan, the world’s fastest supercomputer—that could dramatically improve early warning capabilities for coastal communities near earthquake zones.

Computational Math | Computational Science | Discrete Mathematics | Exascale | HPC Architectures | Open-Source Software | PDE Methods

EXUDE Elite Laser


Source: Science & Technology Review

S&TR cover story: Another innovation celebration

A unique laser optic design and two novel open-source software projects bring the Laboratory’s R&D 100 awards total to 182.

Awards | Data Movement and Memory | Emerging Architectures | HPC Systems and Software | Lasers and Optics | Near Memory Computing | Open-Source Software | Storage, File Systems, and I/O

3D rectangle divided into an irregular mesh colored blue, red, and green


Source: LLNL Computing

Robust evaluation of PDE solutions on high-order meshes

A new mathematical technique improves the computational efficiency of evaluating the solution in large-scale, high-order meshes on advanced HPC systems.

Computational Math | Discrete Mathematics | HPC Systems and Software | Hybrid/Heterogeneous | PDE Methods | Programming Languages and Models

Kathleen presenting at a podium in front of a big screen, which shows a slide titled “User Feedback Requesting More Build Parallelism”


Source: LLNL Computing

Global community convenes for Spack’s first user meeting

Nicknamed SUM25, Spack’s first user meeting showcased new development and a thriving community.

Events | HPC Systems and Software | Open-Source Software | Outreach | Software Build and Installation

El Capitan supercomputer


Source: LLNL News

El Capitan reigns supreme across three major supercomputing benchmarks

LLNL's flagship exascale machine maintained its status as the fastest supercomputer on the planet—claiming the No. 1 spot on not just one, but three of the most prestigious HPC rankings.

HPC Architectures | HPC Systems and Software

stock photo of people studying and learning at a laptop


Source: High Performance Computing Innovation Center

Register for HPC tutorials this summer

Learn how to use a modern, open-source HPC software stack! From mid-July to mid-September, join our tutorials on how to install and use several projects on AWS EC2 instances (provided). All experience levels are welcome.

Education | Events | HPC Systems and Software | Open-Source Software | Outreach | Scientific Cloud Computing | Software Engineering | Software Libraries

microphone, podcast logo, and photo of two people with a quantum computer


Source: LLNL News

Big Ideas Lab podcast enters the quantum realm

In the current episode of the Big Ideas Lab, dive into the strange new frontier where physics meets information, and reality gets rewritten—qubit by qubit.

Emerging Architectures | Multimedia | Quantum Computing

DOE secretary and LLNL officials in the machine room


Source: LLNL News

DOE Secretary Wright gets up-close look at innovation in action during LLNL visit

Wright’s day-long visit—his first to LLNL since being appointed Energy secretary—included behind-the-scenes tours of some of LLNL’s most advanced facilities and machines, from the National Ignition Facility to El Capitan, the world’s most powerful supercomputer.

Events | HPC Systems and Software

four people in NIF hard hats


Source: LLNL News

U.S. Energy Secretary Wright visits LLNL

Wright’s daylong visit included briefings and discussions with LLNL experts in key mission areas including stockpile modernization, fusion energy, AI, cyber security and supercomputing.

AI/ML | Cyber Security | Data Science | Events | HPC Systems and Software

Proteus code snippets showing how the user annotates host functions and device kernel functions


Source: LLNL Computing

Proteus arrives just in time for faster HPC code compilation

A new just-in-time compilation approach leverages LLVM intermediate representation to optimize GPU kernels with portability to any GPU architecture.

Compiler Technology | HPC Systems and Software | Hybrid/Heterogeneous | Open-Source Software | Performance, Portability, and Productivity | Programming Languages and Models

Adobe Stock image of a generic GPU viewed close up on a circuit board


Source: LLNL Computing

Distinguished paper offers unique solution for GPU offloading

Research recognized at the HiPC IEEE conference proposes using an optimized version of OpenMP for vendor-agnostic GPU performance, portability, and scalability.

Compiler Technology | Data Movement and Memory | HPC Architectures | HPC Systems and Software | Hybrid/Heterogeneous | Middleware | Performance, Portability, and Productivity | Programming Languages and Models | Software Engineering