For technical questions, account support, and computer operations, contact us via
or send email to
or call at any hour by phone at
- 1-866-907-2383
The help desk uses the XSEDE Ticketing System (XTS) and will assign your email or form submission to a ticket. You will receive auto-notification back that lets you know your email has been received, and provides you with a ticket number for reference.
You can also reach the NICS User Support directly by phone at
- 1-865-241-1504
or find individual contact information at the
For general information, contact:
National Institute for Computational Sciences
Oak Ridge National Laboratory
PO Box 2008, BLDG 5100
Oak Ridge, TN 37831-6173
Phone: 1-865-574-5493
Fax: 1-865-576-4368

