HPC New Users

This page is obsolete

If you are new to the site, please read the Getting Started Guide. If you haven't used the HPC complex recently, then see the README FIRST file.

Computing Acceptable Use Policy

Users of any University of Kentucky Computing or Communications facility are expected to abide by all of the relevant policies and procedures. For more information, please see the Policy Governing Access To and Use of University Information Technology Resources (PDF) document or the UK Information Systems Policies page.

In particular, accounts are granted to one person only and no other person may use the account. No exceptions will be made. Failure to abide by these policies may result in the suspension of computing privileges.

If your account becomes inaccessible, please contact User Account Services, using the contact information on the right. Ask specifically if the account has been suspended or disabled for some reason. If it has been suspended, then send email to the HPC support team at help-hpc@uky.edu for more information.

Other useful information

  • Please forward email from the HPC cluster to an email address that you read regularly! This will allow us to inform you of any important announcements or problems with your jobs. Create a file in your home directory named .forward (note the leading period). This file should contain a single line, which is the address to which your mail should be forwarded.
  • All interactive jobs must be run on a login node. No interactive jobs may be run on any other node.
  • The HPC system is a cluster of nodes interconnected with a hi-speed network. In general, the primary approach to using more than 12 cores (on the Basic nodes) or 32 cores (on the Hi-Mem nodes) for one job is to use MPI. For more information, see the MPI documentation in the Documentation section of this Web site.
  • Gaussian is not configured to provide multi-node execution. Therefore, the maximum number of cores for a Gaussian job is 32 . Gaussian must be run as a batch job. To learn about running Gaussian batch jobs using a helper script, read in the software documentation section of this Web site.
  • Your home directory (/home/userid) is backed up nightly. Your scratch space (/scratch/userid) is NOT backed up, even though there may be a link to it in your home directory (/home/userid/scratch) for convenience.


The disk space used by each user's home directory is limited by quotas. There are no quotas on your scratch directory: (/userid/scratch).

When you reach the soft quota limit you will start getting warnings. You should immediately start reducing the amount of disk space you are using by deleting unnecessary files, and so on. You may move files off the cluster to the HSM near-line storage system. For more information on HSM and data storage, see the FAQ Long Term Storage.

Please use disk space frugally, both home and scratch! We don't have enough space for everyone to use the full quotas on their home directories, and everyone on the cluster shares the scratch space.

Scratch Directories/Files

Please create any large temporary files in your scratch directory. This will give your jobs better I/O performance. The path for the scratch area is /scratch/your_userid.

Note: Files in the scratch directory are not backed up! Make sure you copy any important files from scratch to your home directory, the HSM near-line storage system, or some other safe location.

Files left unused in the scratch directory for more than thirty (30) days may be purged. This time limit may be adjusted due to extraordinary circumstances, such as when the file system nears full capacity. Every effort will be made to retain files for at least thirty days.

859-218-HELP (859-218-4357) 218help@uky.edu