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Account Policies

There are a number of policies which apply to NERSC users. These policies originate from a number of sources, such as DOE regulations and DOE and NERSC management.

User Account Ownership, Password, and MFA Policies

A user is given a username (also known as a login name) and creates a password and Multi-Factor Authentication (MFA) token that enable them to access NERSC resources. This username and its associated password and MFA may be used by a single individual only.

Passwords may not be shared, and must be created or changed using specified rules. See NERSC Passwords for more information.

Likewise, MFA tokens must be kept secure and may not be shared with other users.

NERSC will disable a user who shares any one of their passwords with another person. If a person authenticating to a username is not the one who is officially registered with NERSC as the owner of that username, then "sharing" has occurred and all usernames associated with the owner of the shared username will be disabled.

If a user is disabled due to account sharing, the PI or an authorized project manager must send a memo to explaining why the sharing occurred and assuring that it will not occur again. NERSC will then determine if the user should be re-enabled.

The computer use policies and security rules that apply to all users of NERSC resources are listed in the Appropriate Use Policy form.

Security Incidents

If you think there has been a computer security incident you should contact NERSC Security as soon as possible at

Please save any evidence of the break-in and include as many details as possible in your communication with us.

Acknowledge use of NERSC resources

Please acknowledge NERSC in your publications, for example:

This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.