User Updates

TACC's production PrivacyIdea (pidea01.tacc.utexas.edu) will be unavailable for maintenance.  This will effectively make all logins unusable from 6:00PM to 8:00PM Thursday, February 19.

Vista will not be available from 7:00 AM to 10:00 PM CST on Thursday, February 12, 2026. System maintenance will be performed during this time. 

The TACC VPN infrastructure will be taken down for maintenance from 7PM to 9PM on Thursday, January 15th. VPN maintenance will be performed during this time.

TACC is updating its account policies concerning institutional affiliation and email address requirements. These changes align with NSF guidance and ensure compliance with federal funding requirements. Beginning 1/6/2026, all users will be required to have an approved institutional affiliation with an associated email address. For example, if you are affiliated with The University of Texas at Austin, you will need to have a utexas.edu email address associated with your account. Generic domains such as gmail.com, yahoo.com, or qq.com are prohibited. Accounts with these types of domains will be deactivated and users will be required to login to https://accounts.tacc.utexas.edu with their current TACC username and password to update their email address and institution. If you run into an issues while updating your account, please feel free to submit a ticket here: https://tacc.utexas.edu/about/help/. Thanks, The TACC Accounts Team

The Ranch archive system (both new and old) will be unavailable on Sunday, January 4th at 8PM until Monday, January 5th at 5PM, due to power work that is taking place on the building that houses the old tape library system(The Commons Building)

TACC will be observing the University Winter Break schedule and be operating with essential personnel only from December 23rd - January 4th. During this time, allocation requests, account requests, and tickets will not be reviewed or processed. All services will resume normal operations on January 5th.We wish you all a wonderful holiday season and look forward to working with you in the new year! Thank you, The TACC Team 

Texascale Days allows participating researchers the space and time to compute some of their biggest data and consult with our experts on benchmarking and optimizations. The Vista GH nodes will be reserved for Texascale Days - large scale runs of at least half system size (up to 256 nodes) or full system size (up to 512 nodes) during the third week of December.  This Texascale Days event will only support benchmarking runs, 2 - 4 hours in length, not production runs. This event allows our researchers the opportunity to work on problems that may not be possible at a smaller scale. To be eligible to participate on Vista, your application must have already successfully run on at least 64 GH nodes on Vista.To request to participate, please fill out and submit the form before end of business December 10.Link to form: https://forms.gle/mfxQtUPLv1rfLE5w9Please submit any questions you may have through the TACC ticketing system or feedback form.https://tacc.utexas.edu/portal/tickets

Texascale Days allows participating researchers the space and time to compute some of their biggest data and consult with our experts on benchmarking and optimizations. The Vista GH nodes will be reserved for Texascale Days - large scale runs of at least half system size (up to 256 nodes) or full system size (up to 512 nodes) during the third week of December.  This Texascale Days event will only support benchmarking runs, 2 - 4 hours in length, not production runs. This event allows our researchers the opportunity to work on problems that may not be possible at a smaller scale. To be eligible to participate on Vista, your application must have already successfully run on at least 64 GH nodes on Vista.To request to participate, please fill out and submit the form before end of business December 10.Link to form: https://forms.gle/mfxQtUPLv1rfLE5w9Please submit any questions you may have through the TACC ticketing system or feedback form.https://tacc.utexas.edu/portal/tickets

TACC PROJECTS, ALLOCATIONS, AND ACCOUNTS SYSTEM MAINTENANCE November 4, 9AM - 1PM CentralDuring this maintenance, the underlying services for TACC projects, allocations, and user accounts will be unavailable.Users will be unable to make any changes to the following during this time: *Creating new projects *Modifying existing allocations *Updating account or user profilesTACC compute resources and login services will otherwise remain operational. Please plan any necessary account or project updates before or after the designated maintenance time.Due to changes in TACC security policy, you may be required to update your TACC account profile.

October 14, 2025 9AM - 11AM CentralDuring this maintenance window, the underlying services for TACC projects, allocations, and user accounts will be unavailable.   Users will be unable to make any changes to the following during this time:    Creating new projects Modifying existing allocations Updating account or user profiles   TACC compute resources and login services will otherwise remain operational. Please plan any necessary account or project updates before or after the designated maintenance time.   Please submit any questions you may have via the TACC User Portal: https://tacc.utexas.edu/portal/tickets

As part of the construction of the NSF Leadership Class Computing Facility, the hardware underlying the TACC "Ranch" tape archive system is being replaced. This new Ranch will allow us to expand the capacity of the archive to an exabyte and beyond over the next several years. If there is data in the archive you wish to keep on the new system, you will need to move it to the new hardware. Please carefully review the message below for important information on timelines, where to find your old data, where to write your new data, and directions on migrating. TimelineSeptember 30, 2025: New Ranch hardware will be available to general users.Begin migrating your data NOWExisting Ranch directories will be mounted as read only so that contents can be copied easilySeptember 30, 2025: Old Ranch hardware will be removed from service. For detailed instructions on what users need to do, please view our migration guide here: https://docs.tacc.utexas.edu/hpc/ranch-migration-2025/For very large data migrations (=1PB) or other special use cases, please contact the support team for assistance: https://tacc.utexas.edu/portal/tickets

Beginning Wednesday 09/24/2025, TACC is introducing new queue limits on all machines in order to improve fair access and reduce wait times for users.  The job submission limit will be brought down to 4x the running job limit. Previously this number was 10x.For example:Previous: Queue with a limit of 20 running jobs had a maximum limit of 200 submitted jobs.New: Queue with a limit of 20 running jobs has a maximum limit of 80 submitted jobs.The node limit per queue will remain the same.If you have any questions or concerns, please contact our support team here: https://tacc.utexas.edu/portal/tickets 

We would like to remind users that our purge policy applies to all /scratch file systems on Frontera. Until now, we have not needed to purge Frontera's /scratch2 filesystem however an increase in usage necessitates that we now enforce the policy. Per usual we reserve the right to purge any data created more than 10 days prior.Please note that deliberately modifying file access time (using any method, tool, or program) for the purpose of circumventing purge policies is prohibited.More details at: https://docs.tacc.utexas.edu/hpc/frontera/#scratchpolicyPlease submit any questions you may have via the TACC User Portal. https://tacc.utexas.edu/portal/tickets

During maintenance on Tuesday, September 16th from 8:00 AM to 3:00 PM (CDT) TAPIS will be moved to a new infrastructure for stability. Please note that while Jupyter logins will be impacted, running servers will not. Affected services:Any service using TAPIS, including Jupyter Hubs, as well as the following portals:A2CPSAMIAPCDBrainMapCIPPDesignSafeDigital Porous Media PortalFrontera PortalMATCSSINeuronex-3DEMPTDATAXUTRC2TACC StatsIf you have any questions please submit a ticket to the help desk here:https://tacc.utexas.edu/portal/tickets

The last chance to register for the TACC Symposium for Texas Researchers (TACCSTER) is Friday August 29th. TACCSTER will be held on September 23-24, 2025, in person in the ACB building on the J.J. Pickle Research Campus (PRC) of The University of Texas at Austin.TACCSTER is a meeting of scientists, engineers, and scholars from across the state who use, or would like to use, the Texas Advanced Computing Center (TACC) to advance their research goals. Researchers from across the country are welcome to attend. This meeting will be an opportunity for you to:Hear invited speakers from a broad range of disciplinesVisit ~50 posters from institutions all over TexasNetwork with your fellow TACC users and researchersLearn new and useful computing skills from a variety of tutorialsFind out information about the latest TACC systems and servicesTo register and for more information please visit: https://www.tacc.utexas.edu/taccsterPlease contact taccster@tacc.utexas.edu if you have any questions.

The TACC VPN infrastructure will not be available from 7:30 PM to 8:30 PM (CDT) on Tuesday, August 19th for maintenance. No logins will work but this will not affect other systems.