# OnDemand - Tufts HPC Cluster Web Interface

```{important}
   VPN - Off-campus access from non-Tufts Network please connect to [Tufts VPN](https://access.tufts.edu/vpn)
```

OnDemand provides easy access to the HPC environment using a web browser.
Start by going to [**OnDemand**](https://ondemand.pax.tufts.edu), https://ondemand.pax.tufts.edu using **Chrome or FireFox**



<img src="https://raw.githubusercontent.com/DelilahYM/ImageHost/master/ondemand_login.png" alt="Core-Node" width=70%>

Use your **Tufts UTLN** (all lower-case) and **password** to login. 

<img src="https://raw.githubusercontent.com/DelilahYM/ImageHost/master/ondemand_home.png" alt="Core-Node" width=70%>



<img src="https://raw.githubusercontent.com/DelilahYM/ImageHost/master/ondemand_menu.png" alt="Core-Node" width=70%>

__`Clusters`__, you can start a shell access to the HPC cluster. 

**`Tufts HPC Shell Access`** = `$ ssh your_utln@login.cluster.tufts.edu `= `$ ssh your_utln@login.pax.tufts.edu `

OR

Use the `>_Open in Terminal` button in `Files` to open a terminal in whichever directory you navigated to.

If you need X11 access through OnDemand to display any GUI applications, please use our [OnDemand](https://ondemand.pax.tufts.edu) **`Clusters`** for this option:

**`Tufts HPC FastX11 Shell Access`** = `$ ssh -XYC your_utln@login.cluster.tufts.edu` (with X11 for GUI applications)

[FastX Web/Desktop Client Setup Instructions](https://tufts.box.com/s/s1vig4km289dzx8qkq4mbhlp4es0oxu1)

OR 

You also have the option to use the `Xfce Terminal` under new  [OnDemand](https://ondemand.pax.tufts.edu) `Interactive Apps` with limited computing resources.