Supercomputing and Computation


Contact Us

Mailing Address

Oak Ridge Leadership Computing Facility
Oak Ridge National Laboratory
P.O. Box 2008, Oak Ridge, TN 37831-6161

Phone: 865-241-6536
Fax: 865-241-2850

OLCF User Assistance Center

For technical questions, allocation and account support, and computer operations, visit our support page or send an email to


Visitors to ORNL are welcome to take a guided tour of the NCCS. The center hosts more than 300 tours each year, giving members of Congress and other government officials, foreign guests, visiting researchers, and student and community groups an opportunity to observe the center’s world-class facilities in action.

Special guided, general orientation, and other “customized” tours are offered primarily for educational groups that are interested in learning more about the history, current missions, and research and development at ORNL. Advance registration is required. Other restrictions apply as well.

For more information about the tour programs, contact Fred Strohl (, 865-574-4165).

ORNL personnel requesting tours of the facility can access the OLCF Tour Request Form here.


We're always happy to get feedback from our users. Please use the Comments form to send us your comments, questions, and observations.