Logging in to DSAI

This section covers how to log into the DSAI cluster and transfer files to and from the system.

Use Secure Shell (SSH) to connect:

ssh <YourUserID>@dsailogin.arch.jhu.edu

You can also use:

ssh -XY dsailogin.arch.jhu.edu -l <userid>

Gateway: dsailogin.arch.jhu.edu

Access to Login Node

Once you establish a connection, SSH will prompt for your password. Once you have signed into the login node, you should see the Message of the Day “MOTD”.

Quota information will be provided to users automatically on login, but users can use the quotas.py command at anytime to view quota and usage information.

Last login: Thu Apr 24 12:32:18 2025 from 174.172.66.209

Multiplexing SSH Connections

To avoid re-entering your password and two-factor code with each connection, you can enable SSH multiplexing:

1. Edit (or create) ~/.ssh/config on your local Unix-based machine:

   Host dsailogin.arch.jhu.edu
       ControlMaster auto
       ControlPath ~/.ssh/control:%h:%p:%r
   

2. Start the master connection:

   ssh -fNM -X dsailogin.arch.jhu.edu -l <userid>
   

3. To stop the connection:

   ssh -O stop dsailogin.arch.jhu.edu
   

Note

Large file transfers and terminal sessions may experience lag when using the same multiplexed connection.

Windows users: Use PuTTY or MobaXterm (Home Edition → Installer edition) to connect. MobaXterm includes an X11 server for GUI apps and supports SFTP file transfers.

Mac users: Use the built-in Terminal. For GUI support, install XQuartz.