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National Center for Computational Sciences

Pioneers in Leadership Computing

The National Center for Computational Sciences is catalyzing the future of science through leadership computing and enabling scientific discovery through state-of-the-art computing resources and operational capability to scientists in government, academia, and industry.

We are world-leading experts in building, operating, and leveraging advanced computing systems for scientific discovery.


The National Center for Computational Sciences (NCCS) provides state-of-the-art computational and data science infrastructure for technical and scientific professionals to accelerate scientific discovery and engineering advances across a broad range of disciplines.

As an important part of the broader high-performance computing (HPC) infrastructure, the division also hosts the Oak Ridge Leadership Computing Facility (OLCF), a Department of Energy Office of Science User Facility. The OLCF is home to the HPE Cray EX Frontier, which debuted in 2022 as the first supercomputer to break the exascale barrier and the fastest computer in the world. With a peak performance of 1.5 EF, Frontier is capable of over 1 quintillion calculations per second. 

Each year the OLCF provides over 36 million hours of computer time to scientists and engineers who use Frontier and the OLCF's other compute resources to work on some of the most important scientific challenges of our day. The power of exascale will open new doors of discovery in climate, medicine, materials, energy, and beyond. 

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1.2 EF
At 1.2 EF, Frontier has broken the exascale barrier and is the fastest supercomputer in the world.
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700 PB
Frontier's Orion storage system holds 33 times the amount of data in the Library of Congress.
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1 second
If everyone on Earth solved one equation a second, it would take over 4 years to complete what Frontier can in 1 second.

Supercomputing at ORNL