Getting Started

• Setting up your accounts
• Hands-on intro to available HPC resource
  1. Storrs
  2. TACC
• Tutorials
  1. UNIX Command Lines
  2. Python

Logging Into the Computing Clusters

Once you account on Stampede has been activated. Follow the instructions and tests to make sure everything is set up properly and functional.

Contents

1. Required Installation
2. Getting an Account
3. Logging On

Installation

Mac OSX

Download and install:

• XQuartz

To prevent X11 from timing out, open the terminal and type:

mkdir -p ~/.ssh
echo -e "\nHost *\n ForwardX11Timeout 1000000\n" >>~/.ssh/config

Windows

Download and install:

• PuTTY
• Xming (Note: disable automatic installation of PuTTY with Xming. The above installer is a newer version)

Getting an Account

HPC-Storrs

HPC facility on Storrs campus are open to all members of the UConn research community. If you haven’t applied one before, you can simply request for an account by clicking “Get an Account”. A new page will pop up to ask for your NetID and password. Your HPC-Storrs account username will be your UCONN NetID and the initial password will also be the same as your NetID password.

TACC-Stampede

Our TACC-Stampede allocation is managed through XSEDE funded by NSF. Please visit XSEDE user portal first to create an account. After the submission of the account request, you will receive an approval email in 24-48 hrs. Log onto your XSEDE account and check your TACC-Stampede account username(most probably start with tgxxxxxx). Remember to email or slack me your XSEDE and TACC account usernames as soon as you receive them.

Go to TACC user portal and click “Log in with TACC ACCOUNT”, put your username (“tgxxxxxx) and password to login. If you don’t know your password, you might want to try “Forgot your password”. After login, You will also be asked to setup the Multi-factor Authorization.

Logging onto the Clusters

Follow the instructions below for your system:

Mac OSX

Open “Applications-> Utilities -> Terminal” or “Command+Space” to search Terminal using “spotlight search” In a terminal:

ssh -X username@stampede.tacc.utexas.edu

ssh -X NetID@login.storrs.hpc.uconn.edu

Windows

Launch Xming. You will always need to have this open in order to forward graphical windows from the external clusters.

Start PuTTY, and:

• “Session” → “Host Name” username@stampede.tacc.utexas.edu for Stampede and NetID@login.storrs.hpc.uconn.edu for HPC-Storrs
• “Connection” → “SSH” → “X11” check “Enable X11 forwarding”
• Back in “Session”, you can save these settings for next time.

You can start putty several times, if you need several terminal windows; only one instance of Xming needed.

Linux

In a terminal:

ssh -X username@stampede.tacc.utexas.edu

ssh -X NetID@login.storrs.hpc.uconn.edu

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