University of Connecticut University of UC Title Fallback Connecticut

Access


For increased security it is required that you have a Uconn IP Address when attempting to log on to the cluster. This means that the cluster must believe that you are using a Uconn computer before it will allow you to submit a username and password. There are 3 ways to accomplish this:

  1. Use wired internet access on campus
  2. Use the university VPN client either on or off campus
  3. Use Skybox to initiate contact with the cluster from either on or off campus

To obtain a cluster account:

  1. Talk to your research advisor
  2. Have your research advisor contact Alex Barnes(barnes@phys.uconn.edu) requesting an account
  3. You will first receive an e-mail containing your username
  4. A follow-up e-mail will be sent containing the rest of your login information

The 32 computers that make up the cluster are labeled stat0-stat31. stat31 serves as the login and compilation node (sole licensed location of the PGI Fortran compiler) and is accessible from outside by the name stats.phys.uconn.edu via an ssh client. Linux, Mac and Windows will behave differently at this point so we include instructions for all operating systems.

Linux Users

  1. Open a Terminal windows (depending on distribution, this may be done by right-clicking the desktop)
  2. Type ssh username@stats.phys.uconn.edu
  3. After entering your password this will put you in your home directory (/home/username)

Mac Users

  1. Click on the magnifying glass in the top right corner and search for Terminal
  2. Once in Terminal, type ssh username@stats.phys.uconn.edu
  3. After entering your password this will put you in your home directory (/home/username)

Windows Users

  1. Obtains an SSH client for Windows.  The department has a paid program on lab machines.  Cygwin is the best free alternative.  PuTTY works but is not recommended.
  2. After installing and opening your SSH client of choice, type ssh username@stats.phys.uconn.edu
  3. After entering your password this will put you in your home directory (/home/username)
  4. An account holder on the cluster will usually have a user name composed of the first letter(s) of his or her first name and full last name (John Graunt: jgraunt, Rainer Maria Rilke: rmrilke). Note that the password assigned to you is case-sensitive. Changing of the password cannot be done on the stats login node: log into zeus.phys.uconn.edu and use the command kpasswd. You will be prompted for your current password and then asked to create a new one.

A secure file transfer partner to ssh is scp. This simple tool has a similar syntax to the file copy cp command on linux, but allows remote transfer, compression, encryption ciphers etc. For example, the hypothetical user “wkhastings” would transfer a local file “metropolis_v1.R” to the src directory under the home space with a new name – “metropolis.R” is invoked as follows:

scp metropolis_v1.R wkhastings@stats.phys.uconn.edu:src/metropolis.R