Oscar
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  • Connecting to Oscar
    • SSH (Terminal)
      • SSH Key Login (Passwordless SSH)
        • Mac/Linux/Windows(PowerShell)
        • Windows(PuTTY)
      • SSH Configuration File
      • X-Forwarding
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        • Mac/Linux
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      • Using File Explorer on OOD
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      • Using Python or Conda environments in the Jupyter App
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      • Desktop App (VNC)
    • SMB (Local Mount)
    • Remote IDE (VS Code)
      • From Non-compliant Networks (2-FA)
      • Setup virtual environment and debugger
  • Managing files
    • Oscar's Filesystem
    • Transferring Files to and from Oscar
    • Transferring Files between Oscar and Campus File Storage (Replicated and Non-Replicated)
    • Resolving quota issues
      • Understanding Disk Quotas
    • Inspecting Disk Usage (Ncdu)
    • Restoring Deleted Files
    • Best Practices for I/O
    • Version Control
  • Submitting jobs
    • Running Jobs
    • Slurm Partitions
    • Interactive Jobs
    • Batch Jobs
    • Managing Jobs
    • Job Arrays
    • MPI Jobs
    • Condo/Priority Jobs
    • Dependent Jobs
    • Associations & Quality of Service (QOS)
  • GPU Computing
    • GPUs on Oscar
      • Grace Hopper GH200 GPUs
      • H100 NVL Tensor Core GPUs
      • Ampere Architecture GPUs
    • Submitting GPU Jobs
    • Intro to CUDA
    • Compiling CUDA
    • Installing Frameworks (PyTorch, TensorFlow, Jax)
      • Installing JAX
      • Installing TensorFlow
    • Mixing MPI and CUDA
  • Large Memory Computing
    • Large Memory Nodes on Oscar
  • Software
    • Software on Oscar
    • Using Modules
    • Migration of MPI Apps to Slurm 22.05.7
    • Python on Oscar
    • Python in batch jobs
    • Installing Python Packages
    • Installing R Packages
    • Using CCMake
    • Intro to Parallel Programming
    • Anaconda
    • Conda and Mamba
    • DMTCP
    • Screen
    • VASP
    • Gaussian
    • IDL
    • MPI4PY
  • Jupyter Notebooks/Labs
    • Jupyter Notebooks on Oscar
    • Jupyter Labs on Oscar
    • Tunneling into Jupyter with Windows
  • Debugging
    • Arm Forge
      • Configuring Remote Launch
      • Setting Job Submission Settings
  • MATLAB
    • Matlab GUI
    • Matlab Batch Jobs
    • Improving Performance and Memory Management
    • Parallel Matlab
  • Visualization 🕶
    • ParaView Remote Rendering
  • Singularity Containers
    • Intro to Apptainer
    • Building Images
    • Running Images
    • Accessing Oscar Filesystem
      • Example Container (TensorFlow)
    • Singularity Tips and Tricks
  • Installing Software Packages Locally
    • Installing your own version of Quantum Espresso
    • Installing your own version of Qmcpack
  • dbGaP
    • dbGaP Architecture
    • dbGaP Data Transfers
    • dbGaP Job Submission
  • RHEL9 Migration
    • RHEL-9 Migration
    • LMOD - New Module System
    • Module Changes
    • Testing Jupyter Notebooks on RHEL9 mini-cluster
  • Large Language Models
    • Ollama
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On this page
  • Summary of SSH Hosts
  • macOS and Linux
  • Windows
  • Connecting to Oscar for the First Time

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  1. Connecting to Oscar

SSH (Terminal)

PreviousOffboardingNextSSH Key Login (Passwordless SSH)

Last updated 1 month ago

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To log in to Oscar you need Secure Shell (SSH) on your computer.

You need log in using your Brown password. Old Oscar password can not be used for ssh any more.

There are two options for signing into Oscar: with or without VPN.

If you are connected to the Brown VPN, you have the option of to connect to Oscar without having to enter your password.

Summary of SSH Hosts

  • ssh.ccv.brown.edu You can connect from anywhere. You will need Two Factor Authentication

  • sshcampus.ccv.brown.edu You can connect when whithin Brown Wifi, Network or VPN. You will need to .

  • poodcit4.services.brown.edu This is the host to be used when , i.e., Visual Studio Code.

  • transfer.ccv.brown.edu This host is used to using SFTP protocol

macOS and Linux

To log in to Oscar, open a terminal and

  • If you are not connected to the Brown VPN, use the following command:

ssh -X username@ssh.ccv.brown.edu
  • If you are connected to the Brown VPN, use the following command:

ssh -X username@sshcampus.ccv.brown.edu

The -X allows Oscar to display windows on your machine. This allows you to open and use GUI-based applications, such as the text editor gedit.

Windows

  • If you are not connected to the Brown VPN, use username@ssh.ccv.brown.edu as the Host Name and click Open.

  • If you are connected to the Brown VPN, use username@sshvpn.ccv.brown.edu as the Host Name and click Open.

Connecting to Oscar for the First Time

The first time you connect to Oscar you will see a message about the authenticity of the host:

The authenticity of host 'ssh.ccv.brown.edu (138.16.172.8)' can't be established.
RSA key fingerprint is SHA256:Nt***************vL3cH7A.
Are you sure you want to continue connecting (yes/no)?

You can type yes and press return. On subsequent logins you should not see this message.

You will then be prompted for your password.

Nothing will show up on the screen as you type in your password. Just type it in and press enter.

You will now be in your home directory on Oscar. In your terminal you will see a prompt like this:

[username@login004 ~]$

Congratulations, you are now on one of the Oscar login nodes! The login nodes are for administrative tasks such as editing files and compiling code. To use Oscar for computation you will need to use the compute nodes. To get to the compute nodes from the login nodes you can either start an interactive session on a compute node, or submit a batch job.

Please do not run CPU-intense or long-running programs directly on the login nodes! The login nodes are shared by many users, and you will interrupt other users' work.

Watch our videos on and .

Windows users need to install an SSH client. We recommend , a free SSH client for Windows.

Confused? Watch our or .

SSHing on Linux
SSHing on Mac
PuTTY
tutorial on PuTTY installation
SSHing to Oscar on Windows
using an SSH key pair
set up passwordless authentication
connecting from a remote IDE
transfer files to/from oscar