User Manual

1.1 Connecting to Oscar

CCV uses the Secure Shell (SSH) protocol for interactive logins and file transfers. SSH is normally available on Linux, MacOS and other Unix-like systems. A free SSH client application for Windows is available on the CIS software download site. We also recommend putty, another free SSH client for Windows.

CCV systems are accessed through a single login portal called ssh.ccv.brown.edu. To login to the Oscar system:

$ ssh <user>@ssh.ccv.brown.edu

and enter your password. You are now connected to either login001 or login002, the frontend nodes for the cluster.

Note: please do not run computations or simulations on the login nodes, because they are shared with other users. You can use the login nodes to compile your code, manage files, and launch jobs on the compute nodes.

1.1.1 Passwords

To change your Oscar login password, use the command:

$ yppasswd

You will be asked to enter your old password, then your new password twice.

To change your CIFS password, use the command:

$ smbpasswd

1.1.2 Shells

A "shell" is a program that enables you to interact with a Unix system through a command-line interface. You may wish to change your default shell. To do this:

$ ypchsh

Enter your password, then enter /bin/bash (note: CCV only supports the bash shell).