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FAQ

FAQ

  1. What is the best way to copy files from AWS S3 bucket to C2B2 data or archive pool via login node?
    A. We do NOT allow to copy anything from AWS on login node.
    Or by using Globus. Email request would have to be sent to c2b2-hpc@cumc.columbia.edu giving details about the S3 bucket name.

  2. How to set SLURM job charging to different account?
    Using the below command, user can set SBATCH jobs to be charged to different account -

    sbatch --account=”your_account_name” your_job_script.sh

Note - If no account field is mentioned, jobs will be charged to default primary group SLURM account. If user wants to run jobs as part of a new account, send email to C2B2-HPC@cumc.columbia.edu to add user to new SLURM account.

 

  1. How to check the storage quota usage in HPC cluster?

Run this command on ssh terminal in login node -

myquota <uni>


To find the quota usage for users' storage

myquota <PIuni_gp>

To find the quota usage for the group storage

  1. How to setup CUIMC VPN?

  • Do you have account in CUIMC? CUIMC-VPN requires users to have CUIMC accounts on MC Domain.

  • Make sure your mobile phone is registered for DUO Authentication.

  • Do you have the latest version of Cisco AnyConnect

  • Make sure you replace “COLUMBIA VPN” by ssl.cpmc.columbia.edu in the Cisco VPN widget.

If ssl.cpmc.columbia.edu doesn’t seem to work, try using ssl2.cpmc.columbia.edu

  • Make sure you are authenticated; DUO verified and chose “CUIMC VPN” group.

    If it still does not work, then you need to open a help ticket by emailing to 5help@cumc.columbia.edu

     To ssh hpc@c2b2.columbia.edu you have to be either on CUIMC network or be connected to CUIMC VPN.