User Support/Help Desk


Walk-in office hours with Dr. Ryan Johnson are: Monday 10am to 12pm, & Thursday 1pm to 3pm.

Use Policy

The following guidelines for the appropriate use of CARC computing systems must be followed by all users.  These guidelines are meant to ensure the security of user accounts as well as equitable access to shared computing resources.

Acceptable Use

By accepting a CARC account, you agree that:

  • You will be responsible for all use of your computer account(s).
  • Under no circumstances will you share or divulge your login/password information to another user.  
  • Your account will be used for academic research purposes only and not for commercial use.
  • You will not use the computer account to engage in any form of illegal software copying or other copyright infringement.
  • You will not attempt to access accounts, files, or information belonging to other users without their knowledge and consent.
  • You understand that monitoring of user activity on CARC machines may occur.

Failure to comply with these rules will result in account removal and possible disciplinary or legal action.

Poblano Use Policy

Poblano is a single “supernode” with 32 cores + 32 floating point units and large (256 GB RAM) memory.   This machine was designed for special applications that require large RAM. Thus, being a single node, it does not utilize the PBS job queuing system.  Instead, we use an informal "sign-up" process coordinated among the users themselves.  If you wish to use the poblano system, please submit a help ticket, and we will arrange for you to meet with a systems staff member to discuss your specific application requirements and for poblano access.

If your application's memory requirements do not exceed 65 GB RAM/node, other CARC systems may be more appropriate for your work.  See Systems for a list of CARC supercomputer machine specifications.


Users are provided with an initial default password in their new user packet.  You should change your password the first time you login and periodically thereafter.  If it is necessary for you to request a password change (for example, if you have forgotten your current password), your password will be set to this default.  It is important that you keep this form in a secure place for future reference.  If you do not have this form available, you will be required to wait until a duplicate can be prepared.  CARC does NOT provide passwords by campus or U.S. mail, phone, fax, or electronic mail.

General Considerations

When running codes on CARC machines, users are expected to regularly monitor their jobs to ensure that they are not overburdening, misusing, or hanging the machine they are using.  The qstat -an and qgrok commands provide useful information about node and processor utilization by the user's job(s).  In extreme cases, if CARC systems staff notice a problem with your job, it may be terminated without notice.

Security Considerations

  • No passwords, for CARC or any other machines, whether inside or outside the University, are to be kept in a personal file (e.g. .rhosts or .netrcon any CARC file system, unless the file is encrypted with strong encryption (e.g. DES or public key encryption). Violation of this condition may lead to immediate and permanent expulsion from CARC systems.
  • For your own protection and that of the CARC community, your CARC password should consist of a minimum of 8 characters with no repeats. At least one character should be a non-alphabetic character. The user's name should not appear as any part of the password. Adherence to this policy will be spot-checked with standard password-breaking security programs.
  • Users making insecure remote connections (e.g., telnet and rlogin) should make it a practice to regularly change their passwords. Once every three months is suggested. 

Acknowledging CARC

Acknowledgements to the Center for Advanced Research Computing in papers or poster presentations can use the following text (or similar):

"We thank the UNM Center for Advanced Research Computing for computational resources used in this work."

Please email a pdf or journal reference for the acknowledging paper to for posting on the CARC website.

Center for Advanced Research Computing

MSC01 1190
1601 Central Ave. NE
Albuquerque, NM 87106

p: 505.277.8249
f:  505.277.8235