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National Center for Computational Sciences

The National Center for Computational Sciences (NCCS), a division of the Computing and Computational Sciences Directorate at ORNL, 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. Each year the OLCF provides over 36 million hours of computer time to scientists and engineers.

The OLCF is home to the IBM AC922 Summit supercomputer, the fastest in the United States.  Summit can perform 200 quadrillion calculations per second, or 200 petaflops. Researchers use Summit to investigate otherwise inaccessible global problems: from designing new materials, energy sources, and treatments for disease to modeling complex phenomenon related to weather or space to gaining new insights by analyzing gargantuan amounts of data. 

In 2022, the NCCS and the OLCF debuted Frontier, the world's first exascale supercomputer. Frontier is the fastest supercomputer in the world according to the May 2022 TOP500 list. Early science on Frontier will begin later this year. 


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No. 1
At 1.1EF, Frontier has broken the exascale barrier and is the fastest supercomputer in the world.
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250 PB
Filesystem capacity with a performance of 2.5 TB/s
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704 nodes
Data analysis cluster with 256 GB of RAM per node

Supercomputing at ORNL

ORNL in the fight against COVID-19

Mission Support Leadership Award

Summit Science: Solving Genetic Mysteries