The Tufts High Performance Compute (HPC) cluster delivers 35,845,920 cpu hours and 59,427,840 gpu hours of free compute time per year to the user community.
Teraflops: 60+ (60+ trillion floating point operations per second) cpu: 4000 cores gpu: 6784 cores Interconnect: 40GB low latency ethernet
For additional information, please contact Research Technology Services at tts-research@tufts.edu
6. Accounts
- David.Lapointe
A user account is required for a user to access any Linux system. An account typically includes identity information such as user name, password, user and group identifiers (userid, gid) so that the system can identify the user. An account will also include a set of resources such as accessible disk space that the user can work in, typically called a home directory and information about the default shell preference.
Username
Every account in a Linux system is associated with an unique username, which is (typically) a sequence of alphanumeric characters at least three characters in length. It is case sensitive; Apple01 is a different username than apple01. A unique integer, the user id (UID), is assigned to each username. Linux uses the UID rather than the username to manage user accounts, since it is more efficient to process numbers thanstrings. You don't necessarily need to know your userid.
Linux also has the notion of a group of users who need to share files and processes. Each account is assigned a primary group with a numerical groupid (GID) that corresponds to the particular group. A single account can belong to many groups, but you may have only one primary group.
Password
Each username requires a password. The username is the account identifier and the password is the authenticator. On our high performance computing system, passwords must be a minimum of eight characters with at least three of the following character classes: lower-case letters, upper-case letters, digits, punctuation. When you enter your password the system encrypts it and compares it to a stored string. This ensures that even the operating system does not know your plain text password.
A password is required for operations such as logging into the system and accessing files. Once you have your Tufts user name and password, you are ready to login to Tufts HPC Â system using a secure shell (ssh). The following example uses an account with user name auser01 using ssh to log into a machine named login.cluster.tufts.edu.
$ ssh -X auser01@login.cluster.tufts.edu
For additional information, please contact Research Technology Services at tts-research@tufts.edu