Department of Energy launches ESnet6 high-performance data-sharing network

ESnet6 increases the Energy Science Network's bandwidth to more than 46 terabits per second for handling data from experiments, models and simulations.
Network routers of ISP. Many wires connect to the network interfaces of powerful Internet servers. Racks with computer equipment in the server room datacenter. (Image credit: Getty Images).

The Department of Energy on Tuesday launched the next generation of its high-performance network for sharing data across its multi-billion-dollar research portfolio.

ESnet6 increases bandwidth to more than 46 terabits per second for processing, storing, visualizing, analyzing and sharing data from experiments, models and simulations between all of DOE’s national laboratories, tens of thousands of researchers, premier scientific instruments and supercomputing centers. It is the latest iteration of the Energy Science Network.

Lawrence Berkeley National Lab has maintained ESnet for 35 years, but complex instruments such as genome sequencers, telescope observatories, X-ray light sources and particle accelerators produce a large volume of data. Network traffic increases 10 times every four years.

“As scientific instruments grow in complexity and supercomputers simulate scientific phenomena at higher resolutions, the science community is facing a growing challenge: data volumes that are increasing exponentially, coupled with the need to move, share and process this data globally and faster than ever before,” said Barbara Helland, associate director of the Office of Science’s Advanced Scientific Computing Research program, in the announcement. “With ESnet6, DOE researchers are equipped with the most sophisticated technology to help tackle the grand challenges we face today in areas like climate science, clean energy, semiconductor production, microelectronics, the discovery of quantum information science and more.”


ESnet6 launched ahead of schedule and boasts data transfers between 400 gigabits and a record 1 terabit per second, a new automation platform for customizing network services, a forthcoming application programming interface platform for scientists to request those services, high-precision telemetry to improve its performance, and improved cybersecurity.

Engineers developed the automation platform to handle current multi-petabyte dataflows and eventually support the exabyte data era by rapidly configuring new network paths for sharing massive datasets in under two minutes. ESnet already carried more than 1.1 exabytes of science data in 2021 in preparation for exascale computers like Frontier, which launched this year.

“ESnet6 is particularly important obviously in this stage as we enter this new era where we will regularly be producing exabytes of data that must be moved seamlessly between facilities, collaborators, laboratories no matter where they may be,” said Asefaw Berhe, director of the Office of Science, during the ESnet6 launch event at LBNL on Tuesday.

ESnet is already the exclusive network carrying data — 480 petabytes of it over the last decade — from the Large Hadron Collider in Geneva, Switzerland, to DOE’s experimental facilities. The world’s largest instrument is receiving upgrades expected to increase its data output 10 times over, and ESnet6 had to be prepared.

Lumen Technologies provided DOE with data center space and dark fiber connections serving as the backbone for its 15,000-mile fiber-optic network. Companies like Ciena, Infinera, Nokia and AMD helped DOE navigate supply chain delays by offering other enabling technologies like optical switching and routing platforms and an extreme scale packet monitoring system.


ESnet6 “pushed the envelope” of commercially available resources, said Vint Cerf, vice president and chief internet evangelist at Google, during the launch event.

“It has the capability to do much more refined resource allocation and, I would say, the configuration of its resources to support unusual — either very high speed or certain timely — demands and the ability to adapt quickly at need,” Cerf said.

Google shares DOE’s zeal for ESnet6’s high speeds, he added.

DOE increasingly relies on ESnet’s virtual integration of scientific experimental facilities, supercomputers and global science teams to make research discoveries — including exascale research into wind energy and earthquake simulations.

“ESnet6 represents a transformational change in the way networks are built for research with improved capacity, resiliency and flexibility,” said Inder Monga, executive director of ESnet, in a statement. “Together, these new capabilities make it faster, easier and more efficient for scientists around the world to conduct and collaborate on ground-breaking research.”

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