Exascale Computing Project

Exascale Computing Project
Name	Exascale Computing Project
Established	2016
Focus	High-performance computing, Exascale computing
Parent agency	United States Department of Energy

Exascale Computing Project. The Exascale Computing Project is a collaborative initiative led by the United States Department of Energy to accelerate the development of a capable exascale computing ecosystem. Launched in 2016, it represents a concerted national effort to achieve computing systems capable of at least one exaflop, or a quintillion calculations per second. The project integrates advanced supercomputer hardware with next-generation software and applications to address grand challenge problems in science, engineering, and national security.

Overview

The initiative was formally established through the National Strategic Computing Initiative signed during the Obama administration. Managed jointly by the Office of Science and the National Nuclear Security Administration, it builds upon decades of leadership in high-performance computing at national laboratories like Oak Ridge National Laboratory and Lawrence Livermore National Laboratory. The project's scope encompasses the entire computing stack, from semiconductor research and advanced packaging to complex application software and sophisticated workflow management tools. This holistic approach is designed to ensure the delivered systems, such as the Frontier system at Oak Ridge National Laboratory, are productive for a wide range of scientific missions.

Goals and objectives

The primary technical goal is to deliver at least one exascale system by the early 2020s that is capable of sustained performance on real-world applications. A core objective is to create a resilient and enduring exascale ecosystem, moving beyond pure FLOPS metrics to focus on usability and programmer productivity. This involves co-designing applications with the underlying hardware architecture and developing robust software stacks, including new programming models and advanced mathematical libraries. The project also aims to strengthen the domestic information technology industrial base and ensure continued United States leadership in the face of global competition from nations like China and members of the European Union.

Participating organizations

The project is a vast public-private partnership. Key government contributors include multiple United States Department of Energy national laboratories, such as Argonne National Laboratory, Sandia National Laboratories, and Los Alamos National Laboratory. Major industrial partners involve leading technology companies like AMD, Intel, IBM, and NVIDIA, which provide critical components like central processing units, graphics processing units, and interconnect technologies. Academic institutions, including the University of Tennessee and the University of Illinois Urbana-Champaign, contribute through research in areas like compiler design and computational science. Management support is provided by contractors like Battelle Memorial Institute.

Key application areas

The project targets transformative advancements in several critical domains. In materials science, applications aim to discover new materials for clean energy and advanced manufacturing. For climate science, high-resolution models will improve predictions of global warming and severe weather events. In the realm of nuclear physics, simulations will provide insights into quantum chromodynamics and the properties of atomic nuclei. Other focal areas include combustion research for efficient engines, computational biology for precision medicine, and national security applications managed by the National Nuclear Security Administration for nuclear stockpile stewardship.

Technology and infrastructure

The technological foundation involves integrating extreme-scale heterogeneous computing architectures, often combining central processing units with accelerated graphics processing units. This requires innovations in memory hierarchy, high-bandwidth interconnect networks like Slingshot, and advanced cooling systems to manage immense power densities. The software stack is equally critical, involving the development of the ROCm and oneAPI programming environments, portable performance libraries such as the Message Passing Interface, and new I/O and data management frameworks to handle exabyte-scale datasets. Facilities like the Oak Ridge Leadership Computing Facility provide the necessary infrastructure to house these systems.

Timeline and milestones

Planning began in earnest following the 2015 launch of the National Strategic Computing Initiative. The project officially commenced in 2016 with the award of the first major contracts. A significant early milestone was the deployment of pre-exascale systems like Summit at Oak Ridge National Laboratory and Sierra at Lawrence Livermore National Laboratory in 2018. The delivery of the nation's first exascale system, Frontier, was achieved in 2022, with its formal acceptance and top ranking on the TOP500 list marking a historic achievement. Subsequent milestones include the deployment of the Aurora system at Argonne National Laboratory and the El Capitan system for the National Nuclear Security Administration.

Impact and significance

The successful execution of this project ensures the United States maintains a strategic advantage in a technology fundamental to scientific discovery and economic competitiveness. It provides an unprecedented tool for tackling grand challenges, from developing new pharmaceutical drugs to understanding the origins of the universe. The advancements in semiconductor design, software engineering, and system integration diffuse into the broader commercial sector, benefiting fields like artificial intelligence and big data analytics. By achieving exascale, the project sets the stage for the next era of high-performance computing, influencing future roadmaps and international efforts in Zettascale computing.

Category:High-performance computing Category:United States Department of Energy Category:Supercomputing