SSH Login
Most experienced users use the fast SSH text interface to submit batch jobs. The alternative OpenOnDemand web interface is needed for graphical jobs and is usually easier for new users (and can also provide an SSH terminal in a browser window).
SSH text login will require a SSH client on your workstation and one of several login servers depending on your internet location.
Linux All Linux variants come with an SSH client “ssh” that runs in a standard terminal. File transfer apps are “scp” and “sftp”.
Mac All Mac variants come with or can install an SSH client “ssh” that runs inside the standard “Terminal” app in “Utilities”. File transfer apps are “scp” and “sftp”.
MS Windows Windows doesn't come with an SSH client.
If you want a lightweight client that runs from single executable(s) for lab and library computers, PuTTY has been available for many years. Use the greenend.org.uk site, not google search results which might install malware. You will want the putty.exe program for logging in, and either 'pscp.exe' or 'psftp.exe' for moving data, depending if you want the SCP or SFTP interfaces.
PuTTY site
If you have a reasonably powerful Win 11 or Win 10 system, we recommend Microsoft WSL or WSL2. Install from Microsoft or from the MS store. It will run a very good clone of a Linux system on your Windows box, so you can use the much superior Linux utility programs. The default Linux distribution is Ubuntu. If you want a distribution very much like the cluster, you can download Alma Linux 8 instead and do some software developing on your workstation, although it won't have all the application software that the cluster has. WSL is a form of virtual machine so it takes more than minimal hardware to run well. Apps in WSL are ssh, scp, sftp like Linux.
There's also a program with an Explorer-like interface with an old but functional version freely available. It has terminal and file transfer apps sshwinsecureshell-3.2.9.exe direct download
Operation
for username “rfeynman” and login host “pinnacle.uark.edu”
Linux/Mac/WSL: ssh rfeynman@pinnacle.uark.edu . If you need a port (default 22) add -p 2022.
Putty/WinSecureShell: fill out terminal/file transfer app with user rfeynman, host pinnacle.uark.edu, port 22 or as needed.
