August 5, 2025
5 min read
Lawrence Livermore National Laboratory
LLNL researchers use AI agents on top supercomputers to automate and accelerate inertial confinement fusion target design and simulations.
Researchers at Lawrence Livermore National Laboratory (LLNL) have achieved a significant advancement by deploying AI agents on two of the world's most powerful supercomputers to automate and accelerate inertial confinement fusion (ICF) experiments. This groundbreaking work is part of an AI framework called the Multi-Agent Design Assistant (MADA), which merges Large Language Models (LLMs) with sophisticated simulation tools.
The MADA system empowers LLNL scientists and collaborators to interpret natural language prompts from human designers and generate complete physics simulation decks for LLNL's next-generation 3D multiphysics code, MARBL. MARBL is crucial for the design and analysis of high-energy-density experiments, including ICF. In ICF experiments at LLNL's National Ignition Facility (NIF), fusion energy is generated when 192 laser beams converge on a tiny target of deuterium and tritium, initiating a fusion chain reaction. The MADA team is utilizing the exascale El Capitan supercomputer, the world's fastest at 2.79 exaFLOPs peak, and its smaller counterpart, Tuolumne, to test this AI system. The framework includes an Inverse Design Agent (IDA) specifically designed for engineering new ICF targets.
The project, initiated in 2019 with an interest in combining AI with shockwave physics, has evolved significantly with advancements in LLMs, making semi-autonomous AI systems a natural progression for ICF design. The MADA team, which includes collaborators from Los Alamos (LANL) and Sandia National Laboratories (SNL), has developed a sophisticated AI-driven design workflow that is already yielding results. In a recent demonstration, an open-source LLM, fine-tuned on MARBL's internal documentation, successfully interpreted a hand-drawn capsule diagram and a natural language request, producing a complete simulation deck. This led to thousands of simulations exploring variations in ICF capsule geometry, ultimately resulting in a novel target design.
This AI-driven design paradigm is particularly timely for fusion research. Following LLNL's historic ignition achievement at NIF in December 2022, the lab is focused on developing a robust ignition platform to unlock new national security applications. Jon Belof, physicist and principal investigator at LLNL, highlights the transformative potential: "AI agents allow us to pursue not just a few design concepts, but hundreds or thousands simultaneously. Instead of humans running simulations, AI runs ensembles of ideas, which could be massively transformative." MADA's core lies in its AI "agents"—autonomous software entities combining an LLM for language understanding with a specialized tooling interface for simulation input and execution on high-performance computing (HPC) systems.
"We are putting AI in the driver’s seat of a supercomputer, which has never been done before," Belof stated. The Job Management Agent (JMA) supports the IDA by managing large-scale simulation workflows across LLNL's supercomputers, interacting with schedulers and workflow tools to ensure efficient job queuing, resource allocation, and output harvesting. This seamless integration of AI planning and HPC execution allows for unprecedented interactivity. Researchers can now explore thousands of design variations in parallel through AI conversation, drastically compressing design cycles that previously took days or weeks. The system can even build training datasets for surrogate models, accelerating the feedback loop for designers.
MADA leverages HPC to run massive simulation ensembles, training a machine learning model called PROFESSOR, which provides instant feedback on design changes. This AI integration streamlines scientific workflows, replacing slow manual iteration with collaborative AI augmentation. The implications of MADA extend beyond ICF, offering a blueprint for AI agents as digital collaborators in fields like materials discovery and weapons certification as exascale systems become more prevalent.
Source: Originally published at Newswise on August 4, 2025.
Frequently Asked Questions (FAQ)
AI and Fusion Research
Q: What is the primary goal of deploying AI agents on supercomputers for fusion experiments? A: The primary goal is to automate and accelerate inertial confinement fusion (ICF) experiments by leveraging AI to interpret human design prompts and generate complex simulation decks. Q: What is the Multi-Agent Design Assistant (MADA) framework? A: MADA is an AI framework that combines Large Language Models (LLMs) with advanced simulation tools to enable human designers to interact with complex physics codes using natural language. Q: How does the MADA system generate simulation decks? A: MADA interprets natural language prompts and then generates full physics simulation decks for LLNL's MARBL code, which is used for designing and analyzing ICF experiments. Q: What role do LLMs play in the MADA system? A: LLMs within MADA interpret natural language prompts from human designers, allowing for a more intuitive interaction with the complex simulation software. Q: What are the specific supercomputers used in this project? A: The project utilizes the exascale El Capitan supercomputer and its smaller sibling, Tuolumne. Q: How does the Inverse Design Agent (IDA) contribute to ICF research? A: The IDA is designed to engineer new ICF targets by exploring variations in design parameters through simulations. Q: What is the significance of LLNL's historic ignition achievement at NIF? A: The achievement signifies a major step towards unlocking new national security applications through fusion energy, making advanced design tools like MADA even more critical. Q: How does AI accelerate the design cycle for fusion experiments? A: AI agents can explore hundreds or thousands of design concepts simultaneously, significantly compressing the time traditionally required for human-driven simulations. Q: What is the function of the Job Management Agent (JMA)? A: The JMA manages large-scale simulation workflows across LLNL's supercomputers, coordinating resource management and workflow optimization to support the AI agents. Q: How does MADA improve the interaction between researchers and simulations? A: MADA enables natural language interaction and image interpretation, allowing researchers to explore thousands of design variations in parallel by simply conversing with an AI agent, a significant improvement over manual job submission. Q: What is PROFESSOR in the context of MADA? A: PROFESSOR is a machine learning model trained on simulation outputs that provides instant feedback to designers on how changes in capsule geometry affect implosion time histories. Q: Beyond ICF, what are the broader implications of the MADA framework? A: MADA serves as a blueprint for using AI agents as digital collaborators in various scientific workflows, including materials discovery and weapons certification, as exascale systems become more widespread.Crypto Market AI's Take
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Source: Originally published at Newswise on August 4, 2025.