When you applied for your account you signed and agreed to the following:
In obtaining this account I agree to use the Center for High Performance Computing resources solely for the purposes connected with my University of Utah or Utah State University affiliation(s) and agree not to allow my access to be used in a manner which could permit unauthorized use of the computer. During the use of this account, certain proprietary software may be made available. Availability of said software is for my use only and may not be copied to any other machine(s) or made available to any other person(s).
CHPC is an important but limited resource for the University of Utah and Utah State University communities. It is CHPC's responsibility to protect these facilities and safeguard their proper use. Because we cannot do this job alone, we depend on your assistance. Responsible use of the system and cooperation on your part helps us maximize availability for you and other researchers.
If CHPC determines that you have not used the CHPC resources in an appropriate fashion, you could lose your account, your current allocation, and your ability to qualify for future allocations.
The first step is to submit a request to CHPC for an account on our systems. This process is described in the CHPC Policy Manual section on account creation.
When you receive your HPC account, you are given access to all of the High Performance Computing Platforms supported by CHPC. They are available through the ssh (secure shell) utility. We only allow protocol 2 to access our systems and do not allow "ssh keys" for security reasons.
When provisioned your account will be populated with the necessary login files for both a tcsh and a bash environment. Depending on the shell choice you made when setting up the account the appropriate files will be used to set your environment so that you can use the clusters. The provided login files include a .tcshrc, .bashrc, .custom.sh and .custom.csh. These files will use the LMod module system to set the environment. We suggest that you do not modify the .tcshrc and .bashrc files, but instead use the .custom.sh and .custom.csh, along with creating a .aliases file to customize your interactive environment.
The general HPC clusters currently supported are:
- Notchpeak Cluster:
- ssh notchpeak.chpc.utah.edu
- Kingspeak Cluster:
- ssh kingspeak.chpc.utah.edu
- Ember Cluster:
- ssh ember.chpc.utah.edu
- Lonepeak Cluster:
- ssh lonepeak.chpc.utah.edu
- Tangent Cluster:
- ssh tangent.chpc.utah.edu
When you ssh to any of the above, you land on one of the interactive or login nodes of the clusters - note that we highly recommend that you use FastX to connect to the clusters.
The login nodes are where you can manage your workflow, such as editing files, submitting jobs, and analyzing your output. All substantial computational work is completed on the compute nodes which are accessed through a batch system. The clusters all use Slurm for managing the batch system.
Each of the above clusters is operated in a condominium style, with general CHPC-owned nodes on which allocation is awarded (see Allocation section below) as well as nodes owned by individual research groups. The owner nodes are available for all CHPC users to run as guests in a preemptable manner when not being used by the owner group.
Note that tangent is a experimental HPC cluster on which resources are dynamically provisioned on hardware that is used for multiple purposes, so at any given time the number of nodes available for use as CHPC compute nodes is variable, between 0 and 64.
In addition, we have a restricted cluster ash owned by a single group to which guest access is allowed via ash-guest.chpc.utah.edu and a protected environment cluster,redwood, for work with sensitive data and or programs.
Changing your Password
Your password for all Unix systems and for samba/cifs mounts of fileservers maintained by CHPC is your campus CIS password. Please go to https://gate.acs.utah.edu/ to change your password.
For Windows OS computers that are joined to the CHPC Active Directory (chpc.ad.utah.edu), your password is also maintained via CIS (https://gate.acs.utah.edu/). If your Windows computer is not joined to the AD, then your password is maintained locally with that machine (local account). Users of CHPC administrated systems can email email@example.com for assistance.
CHPC provides home directory space which is NFS mounted on all of the HPC systems. This file system is not backed up. Users are responsible for moving important data to a more permanent location such as their home department file server. Individual groups can purchase additional home directory space that includes backup to tape, as well as group space that can include quarterly archive backup to tape.
CHPC also provides several layers of scratch on the various HPC platforms we support. Please see the CHPC Disk Usage Policy.
Information common to all of the HPC clusters is given in the HPC Cluster User Guide, with information specific to a given cluster found in the following web-based User Guides for the individual clusters:
- Notchpeak User's Guide
- Kingpeak User's Guide
- Ember User's Guide
- Lonepeak User's Guide
- Ash User's Guide
- Redwood User's Guide
- Tangent User's Guide
In addition, there are user guides for our windows statistic machines:
These should which should help you get going on a given CHPC resource. However, if, after going through these guides and examples, you find you are still having difficulty getting started, please contact CHPC by sending a message to firstname.lastname@example.org stating that you wish to meet with a consultant for some assistance.
All of our documentation is available on the Web (including a FAQ), which you may browse through by visiting CHPC Documentation.
If you have a question or run into problems, please contact the CHPC Help Desk.
- Email: email@example.com
- Interact directly with our issue tracking system, Service-Now
- See our service-now information page for important usage information.
- Phone: (801) 581-6440
- Walk-In: 405 INSCC
The best way to contact us is by emailing firstname.lastname@example.org and stating your question or problem. Please provide as much detail as possible, including your name and contact information, which system you're having trouble with, when the problem occurred, and any job numbers, scripts, or error messages which apply to the problem.
The CHPC Presentation Series is presented every fall semester with select presentations repeated in the spring and summer semesters. These presentations are designed to help you learn about CHPC, parallel programming, some of the specialized software CHPC supports, and other topics we think might assist you in your research. The link to the presentations (above) also includes links to the latest slides for the talks along with abstracts about each presentation. The presentations can be joined remotely via Zoom. Please let us know if you have ideas for presentations you would like added to our series.