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SSH

To start using the HPC cluster, you'll need to establish a secure connection using SSH (Secure Shell). This guide will walk you through the steps required to connect from a terminal on your local computer.

Prerequisites

Step 1: Open a Terminal

  • On Linux, launch a terminal from your applications menu, or by switching consoles.
  • On macOS, launch the terminal application from your applications or spotlight.
  • On Windows, launch terminal from the start menu.

Step 2: Use the SSH Command

Once your terminal is open, enter the following command while replacing your_netid with your specific NetID.

$ ssh your_netid@login.vacc.uvm.edu

Step 3: Accept the Connection

The first time you connect, you may receive a warning about the authenticity of the host. You’ll see something like:

The authenticity of host 'login.uvm.edu (XXX.XXX.XXX.XXX)' can't be established.
ECDSA key fingerprint is SHA256:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.
Are you sure you want to continue connecting (yes/no/[fingerprint])?

Type yes to proceed. This adds the cluster’s server to your list of known hosts. This should only happen the first tim you connect.

Step 4: Enter Your Password

After confirming the connection, you'll be prompted to enter your password:

$ your_netid@login.uvm.edu's password:

Type in your netid password. The password prompt will not show characters as you type them for security reasons.

Step 5: Verify Successful Connection

Once connected, you’ll see a command prompt that looks something like this:

[netid@vacc-login1 ~] $

This indicates you are now logged in and can start using the cluster's resources.

  • Permission Denied: If you see a "Permission denied" error, double-check your NetID and password. Ensure that the password is entered correctly.

Congratulations! You have successfully connected to the Vermont Advanced Computing Center’s HPC cluster.


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