Resources @ UMD

This page is always under construction

CBCB Compute Cluster

Getting access

  1. Request a UMIACS account here:
    • Your "Requested username" should be the same as your UMD email address.
    • If you are a CS PhD student, check the box that says you have a UMD CSD account.
    • The username for the PI's UMIACS email is typically the same as their UMD email.
  2. PI receives an email notification about new account and approves it.
  3. PI logs into UMIACS intranet ( and adds person to UNIX group.
  4. Set-up DUO for two-factor authentication (2FA) by following the instructions here:

Logging on

  1. Ssh onto one of the log-in nodes; for example, ssh will ssh you onto log-in node nexuscbcb00.
  2. Type your password followed by enter.
  3. Type 1 followed by enter to use Duo 2FA; then approve the request through the DUO app on your mobile device.

Making the log-on process easier

The following instructions make it so you don't have to enter your password each time you are ssh-ing or scp-ing.

  1. Set-up an alias for the ssh command above in your bash profile, so you don't have to type the full command each time you ssh.
  2. Set-up the UMIACS VPN on your computer by following the instructions here: so you don't have to use 2FA each time you ssh. (Note that the VPN is also useful for accessing journal articles behind paywalls when you are at home.)
  3. Set-up an RSA key for the CBCB cluster by following the instructions here: so you don't have to type your password each time you ssh.
  4. If you are using the VPN, you now should be able to ssh onto the CBCB cluster just by typing the ssh command or alias. If this doesn't work, email staff at umiacs dot umd dot edu for assistance.

Submitting your first job

  1. Read the instructions for the NEXUS cluster ( and the CBCB partition (
  2. Need to add more detailed instructions...