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Teton has login nodes for users to access the cluster. Login nodes are available publicly using the hostname tetonhostname lorenlog1.arcc.uwyo.edu or teton. uwyo.edu. SSH can be done natively on macOS or Linux based operating systems using the terminal and the ssh command. Although X11 forwarding is supported, and if you need graphical support, we recommend using FastX if at all possible. Additionally, you may want to configure your OpenSSH client to support connection multiplexing if you require multiple terminal sessions. For those instances where you have unreliable network connectivity, you may want to use either tmux or screen once you login to keep sessions alive during disconnects. This will allow you to later reconnect to these sessions.

Users also have direct access to some specialty nodes used for running GUI sessions

ssh USERNAME@tetonUSERNAME@lorenlog1.arcc.uwyo.edu

ssh -l USERNAME tetonlorenlog1.arcc.uwyo.edu

ssh -Y -l USERNAME tetonlorenlog1.arcc.uwyo.edu                          # For secure forwarding of X11 displays

ssh -X -l USERNAME tetonlorenlog1.arcc.uwyo.edu                          # For forwarding of X11 displays

OpenSSH Configuration File (BSD,Linux,macOS)

By default, the OpenSSH user configuration file is $HOME/.ssh/config which can be edited to enhance workflow. Since Teton uses round-robin DNS to provide access to two login nodes and requires two-factor authentication, it can be advantageous to add SSH multiplexing to your local environment to make sure subsequent connections are made to the same login node. This also provides a way to shorten up the hostname and access methods for SCP/SFTP/Rsync capabilities. An example entry looks like where USERNAME would be replaced by your actual UWyo username:

Host teton
  Hostname teton.arcc.uwyo.edu
  User USERNAME
  controlmaster auto
  controlpath ~/.ss/ssh-%r@%h:%p

Access from Microsoft Windows

ARCC currently recommends that users install MobaXterm to access the Teton cluster. It provides appropriate access to the system with SSH and SFTP capability, allowing X11 if required. The home version of MobaXterm should be sufficient. There is also PuTTY if a more minimal application is desired.

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