Wrangler User News

TACC Institute: Parallel Programming Foundations

Posted by Jason Allison on May 18, 2018 4:38:30 PM

June 25th - June 29th, 2018 Ready to parallelize your software? Spend a week with TACC’s high performance computing experts learning to write parallel applications using OpenMP and MPI, profiling and optimizing sequential and parallel applications, debugging parallel software, developing software...

Updated on Jun 15, 2018 1:48:42 PM

We still have spaces available for the Parallel Programming Foundations Institute - June 25th through June 29th, 2018. Please register ASAP to avoid missing out on this opportunity.

Original Posting

June 25th - June 29th, 2018

Ready to parallelize your software? Spend a week with TACC’s high performance computing experts learning to write parallel applications using OpenMP and MPI, profiling and optimizing sequential and parallel applications, debugging parallel software, developing software for many-core architectures, and more. Gain practical experience developing parallel applications with guided hands-on exercises, spend time with TACC experts one-on-one talking about your own research project goals and roadblocks, and hear from TACC staff, users, and collaborators about the latest trends, technologies, and research projects related to large-scale parallel computation.

Topics covered include:
- OpenMP SIMD Directives
- MPI Collectives
- Hybrid OpenMP/MPI Programming
- Profiling and Debugging

For more information and access to registration, please visit the following link:
https://www.tacc.utexas.edu/education/institutes/parallel-programming-foundations

Wrangler Maintenance June 26, 2018

Posted by Jacob Getz on Jun 12, 2018 10:26:15 AM

Wrangler will be unavailable from 8 a.m. to 6 p.m. (CT) on June 26, 2018. Routine maintenance will be performed during this time.

-TACC Team

Wrangler will be unavailable from 8 a.m. to 6 p.m. (CT) on June 26, 2018. Routine maintenance will be performed during this time.

-TACC Team

TACC Institute: Computational Science in the Cloud

Posted by Jason Allison on May 18, 2018 4:25:31 PM

June 4th - June 8th, 2018 Spend a week with TACC’s web and cloud computing experts learning about tools, techniques, and best practices for doing high throughput computing, using virtual machines, containers, and recipes to ensure that your runtime environment is reproducible, even if you need to...

Updated on May 29, 2018 10:14:07 AM

We still have spaces available for the Computational Science in the Cloud Institute.  Please register ASAP to avoid missing out on this opportunity.  The registration deadline for this event has been extended to May 30.

Original Posting

June 4th - June 8th, 2018

Spend a week with TACC’s web and cloud computing experts learning about tools, techniques, and best practices for doing high throughput computing, using virtual machines, containers, and recipes to ensure that your runtime environment is reproducible, even if you need to scale out. Be prepared to take the lessons you learn at TACC back to your own research project with hands-on exercises and one-on-one time with our experts talking about the specifics of your own research project and goals. Hear about the latest tools and research in distributed and cloud computing with invited talks from fellow users, collaborators, and guests.

Topics covered include:

- Introduction to Cloud Concepts
- Virtual Machine Construction using Jetstream
- Making API Calls in Python
- Docker & Singularity Containers
- Automated Deployment Tools


For more information and access to registration, please visit the following link:
https://www.tacc.utexas.edu/education/institutes/computational-science-in-the-cloud

Wrangler status May 15, 2018

Posted by David Littrell on May 15, 2018 1:01:22 PM

Wrangler is currently down for maintenance and is estimated to be up tomorrow at noon CST. 

Updated on May 17, 2018 3:52:18 PM

Wrangler has been returned to production after extensive maintenance on the uninterrupted power supply (UPS) system. Wrangler is dependent on UPS power for a number of subsystems including /data filesystem and the UPS maintenance took longer than anticipated. The queues are now available and please let us know if any other issues arise via the TACC ticketing system. Thank you for your patience.

Updated on May 16, 2018 2:19:52 PM

ETA to Wrangler being back online is Thursday afternoon, 5/17/2018. 

Updated on May 16, 2018 12:34:55 PM

Wrangler is still down. TACC will update when it is back up or there is an ETA. 

Original Posting

Wrangler is currently down for maintenance and is estimated to be up tomorrow at noon CST. 

Stockyard WORK Status May 17 2018

Posted by Jacob Getz on May 17, 2018 2:28:47 PM

$WORK file-system is experiencing intermittent issues.  This may cause some jobs to fail and /work calls to stall.  Administrators are currently working to restore system functionality.

 An additional announcement will be posted when $WORK is fully operational.

-TACC Team

Updated on May 17, 2018 3:40:46 PM

Work is back in full production. Please report any issues you encounter to the helpdesk.


-TACC Team

Original Posting

$WORK file-system is experiencing intermittent issues.  This may cause some jobs to fail and /work calls to stall.  Administrators are currently working to restore system functionality.

 An additional announcement will be posted when $WORK is fully operational.

-TACC Team

Introduction To MPI Using The Interactive Parallelization Tool (IPT)

Posted by Jason Allison on May 7, 2018 1:05:37 PM

In parallel codes MPI (Message Passing Interface) is the predominant method for communicating data between the nodes of a compute cluster. It is widely used and performs well on a large variety of hardware platforms, and therefore a basic understanding of MPI programming is beneficial to anybody...

In parallel codes MPI (Message Passing Interface) is the predominant method for communicating data between the nodes of a compute cluster. It is widely used and performs well on a large variety of hardware platforms, and therefore a basic understanding of MPI programming is beneficial to anybody working in the field of high-performance computing (HPC). In this beginner-level training session, we will provide an overview of the basic concepts of MPI. We will introduce the trainees to the Interactive Parallelization Tool (IPT) that is designed for parallelizing serial C/C++ programs semi-automatically. The participants in the training session will be introduced to MPI and will learn to use IPT for parallelizing their C/C++ applications. 

Prerequisites: Experience working in a Linux environment, and familiarity with C/C++/Fortran or other programming language. 

To register and for more information please visit: https://learn.tacc.utexas.edu/ 

If you have any questions please contact me at jasona@tacc.utexas.edu

Wrangler Status 27 April 2018

Posted by Sergio Leal on Apr 27, 2018 3:09:23 PM

Wrangler experienced an error with the filesystem.  System administrators are currently working on resolving the issue.

Updated on Apr 27, 2018 4:04:59 PM

Wrangler is back in production.

Original Posting

Wrangler experienced an error with the filesystem.  System administrators are currently working on resolving the issue.

Wrangler File System

Posted by Mitchell Collins-Bailey on Apr 23, 2018 7:04:14 PM

Wrangler has filesystem issues with /data and administrators are working on it. It'll be resolved as soon as possible.

Updated on Apr 23, 2018 8:45:02 PM

/data is returned on Wrangler and therefore the queues are re-opened. Most client transactions should've resumed after the filesystem returned so most should only have paused. If jobs have failed due to this issue please submit a ticket

Original Posting

Wrangler has filesystem issues with /data and administrators are working on it. It'll be resolved as soon as possible.

Wrangler Maintenance 13 March 2018

Posted by Mitchell Collins-Bailey on Mar 9, 2018 5:07:28 PM

Wrangler will be taking an emergency maintenance on Tuesday the 13th to recover from a hardware failure that requires filesystems to be unmounted to resolve. We apologize for the short notice.

Updated on Mar 27, 2018 4:41:16 PM

After extensive hardware issues and then filesystem recovery attempts Wrangler now has /gpfs/flash available cluster-wide. We've ended up with a number of files in the lost+found location after the fsck repair programs finally completed cleanly. /gpfs/flash is the scratch filesystem in the Wrangler cluster so we expect files to be replicated elsewhere but if there were any files that are of very high value that are missing there's a chance that they can be restored. Please submit a consulting ticket and the Wrangler admins will determine if they can be restored. Please note that the lost+found recovery location is the combination of all files in no particular order or structure and requires substantial sorting to track down individual entries.

Updated on Mar 13, 2018 5:03:14 PM

Wrangler will be returning to production shortly however we are not able to restore the gpfs/flash filesystem at this point. This is a hardware related issue that is currently being worked on. Please note that jobs that we can identify as definitely using gpfs/flash have been suspended and will be automatically resumed when the filesystem is available.

Original Posting

Wrangler will be taking an emergency maintenance on Tuesday the 13th to recover from a hardware failure that requires filesystems to be unmounted to resolve. We apologize for the short notice.

Training: OpenMP Training Events - April 12th and 13th, 2018

Posted by Jason Allison on Mar 22, 2018 12:19:22 PM

We are pleased to announce the following OpenMP training events are being offered to both in-person and webcast participants April 12th and 13th, 2018. The courses include hands-on exercises on TACC systems. Local participants are strongly encouraged to attend in person. Instructors will be...

We are pleased to announce the following OpenMP training events are being offered to both in-person and webcast participants April 12th and 13th, 2018. The courses include hands-on exercises on TACC systems. Local participants are strongly encouraged to attend in person. Instructors will be available after class to consult on individual projects with in person participants.

4/12/18 9am-12:30pm CT - Introduction to OpenMP
This course will introduce participants to the OpenMP threading model, and describe the basic constructs necessary to parallelize loops on multi-core architectures. Topics include the fork/join threading model, using OpenMP directives, and loop parallelization. The fundamentals of hybrid computing (MPI & OpenMP) will be explained and illustrated.

4/13/18 9am-12:30pm CT - Advanced OpenMP
This course will provide an introduction to OpenMP optimization techniques for multi-core and vectorized architectures. Topics will include OpenMP SIMD directives, configuring OpenMP thread affinity, tasking, and task dependences.

To register and for more information please visit: https://learn.tacc.utexas.edu/

If you have any questions please contact me at jasona@tacc.utexas.edu

Wrangler Maintenance 6 March 2018

Posted by Matthew Edeker on Feb 19, 2018 9:05:34 AM

Wrangler will not be available from 7 a.m. to 5:00 p.m. (CT) on Tuesday, 6 March 2018. System maintenance will be performed during this time.


-TACC Team

Updated on Mar 6, 2018 7:59:45 PM

System updates to Wrangler have been completed and jobs can now be submitted. 

Updated on Mar 6, 2018 4:47:21 PM

System updates for Wrangler have run longer than expected. At this point, there is no ETA for availability. 

Original Posting

Wrangler will not be available from 7 a.m. to 5:00 p.m. (CT) on Tuesday, 6 March 2018. System maintenance will be performed during this time.


-TACC Team

TACC Maintenance 11 March, 2018

Posted by Mitchell Collins-Bailey on Feb 26, 2018 5:32:29 PM

Access to all TACC systems will be unavailable from 9:00 AM CDT  until 2:00 PM CDT on March 11, 2018 to allow for upgrades to the TACC core network hardware. Jobs will continue to run, but users will have no access to TACC services and systems until the upgrade is complete.

Access to all TACC systems will be unavailable from 9:00 AM CDT  until 2:00 PM CDT on March 11, 2018 to allow for upgrades to the TACC core network hardware. Jobs will continue to run, but users will have no access to TACC services and systems until the upgrade is complete.

TACC Maintenance 11 March, 2018

Posted by Mitchell Collins-Bailey on Feb 26, 2018 5:28:56 PM

Access to all TACC systems will be unavailable from 9:00 AM CDT  until 2:00 PM CDT on March 11, 2018 to allow for upgrades to the TACC core network hardware. Jobs will continue to run, but users will have no access to TACC services and systems until the upgrade is complete.

Access to all TACC systems will be unavailable from 9:00 AM CDT  until 2:00 PM CDT on March 11, 2018 to allow for upgrades to the TACC core network hardware. Jobs will continue to run, but users will have no access to TACC services and systems until the upgrade is complete.

Wrangler Maintenance 30 January 2018

Posted by Jacob Getz on Jan 12, 2018 1:28:23 PM

Wrangler will be undergoing system maintenance for patching/updates and unavailable for users on 1/30/18 from 0800-1700 (CST).

Updated on Jan 30, 2018 12:41:29 PM

Wrangler's maintenance is complete and it is back in production.

Original Posting

Wrangler will be undergoing system maintenance for patching/updates and unavailable for users on 1/30/18 from 0800-1700 (CST).

TACC Winter Break Schedule

Posted by Chris Hempel on Dec 21, 2017 6:42:54 AM

TACC personnel will observe the University of Texas at Austin winter break from 5 p.m. (CST) on Thursday, 21 December 2017, and will resume normal business hours on Tuesday, 2 January 2018. A staff member will be on site to monitor the status of all TACC resources. TACC support staff will monitor...

TACC personnel will observe the University of Texas at Austin winter break from 5 p.m. (CST) on Thursday, 21 December 2017, and will resume normal business hours on Tuesday, 2 January 2018. A staff member will be on site to monitor the status of all TACC resources. TACC support staff will monitor the consulting system throughout the break and address critical system issues. The staff will address other issues beginning Tuesday, 2 January 2018.


Please submit any questions you may have via the TACC Consulting System.
https://portal.tacc.utexas.edu/tacc-consulting