Versions Compared

Old Version 32

changes.mady.by.user Jeffrey Tamucci

Saved on

compared with

New Version 33

changes.mady.by.user Jeffrey Tamucci

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Expand

Short answer: First, you need to connect to UConn’s VPN. Then, you should be able to access the HPC.

Long Answer: The HPC Cluster only allows the connection of SSH from the campus-wide computers, for example:

  • computers in the UConn libraries

  • computers in campus's offices/labs

  • computers connected to UCONN-SECURE WiFi, etc.).

In order to connect the HPC when you are off campus, you will first need to connect to the UConn Virtual Private Network (VPN). After connecting to the VPN, you will be able to login to the HPC as you normally do.

For instructions on how to install, setup, and connect your personal device(s) to UConn’s VPN , please go to this webpage.

Why am I suddenly getting a “Permission denied” error when I try to ssh in the HPC?

Expand

Short answer: One of the login nodes is most likely not working properly. Try to ssh into any of the three login nodes directly.

Long Answer: When you ssh into hpc2.storrs.hpc.uconn.edu, you are directed to one of our three login nodes (login4, login5, or login6). Occasionally, one of these three login nodes will be come faulty. If you ssh into the cluster and your account is directed to the faulty node, then you may be given a “Permission denied” error message. If you experience this problem, we recommend you try to ssh directly into one of the login nodes. Here are the three commands one can use to login into our three login nodes. Please replace netID with your own netID.

login4

Code Block
ssh -Y netID@login4.storrs.hpc.uconn.edu

login5

Code Block
ssh -Y netID@login5.storrs.hpc.uconn.edu

login6

Code Block
ssh -Y netID@login6.storrs.hpc.uconn.edu

If one of these allows you to login but another gives you a permission denied error, then we can be sure that there is something wrong with one of the login nodes. If you have the time, we’ll ask that you please send us a screenshot of the login node which is giving you a problem so that we can tend to any problems on that faulty node. This will help us ensure that this problem is fixed as soon as possible.

If you receive this “Permission denied” error when ssh-ing directly into all three login nodes, then the problem may be with your netID. You may have to reset your netID password which can be done at this link.

How do I check what node I am on?

...