PACE A Partnership for an Advanced Computing Environment

November 17, 2021

Join us today for GT’s Virtual ARC Symposium & Poster Session @ SC21 that’s on Wednesday (11/17) 6:00pm – 8:00pm

Filed under: Uncategorized — Semir Sarajlic @ 11:01 am

This is a friendly reminder that the ARC Symposium and Poster Session is today from 6:00pm – 8:00pm (EST).  Join us for this exciting virtual event that will feature invited talks plus more than 20! poster presenters whom will highlight GT’s efforts in research computing, so relax for the evening and engage with our community and guests as we have a number joining from outside GT that includes Microsoft, AMD, Columbia, UCAR, to name a few…   Hope you can join us.

Links to Join the Event:

To join the ARC Symposium invited talks session (6:00 – 7:00pm EST), please use the BlueJeans link below:

To join the ARC Symposium poster session (7:00pm – 8:15pm EST), use the following link:

ARC Symposium Agenda:

5:45 PM EST – Floor Opens

6:00 PM EST – Opening Remarks and Welcome 

Prof. Srinivas Aluru, Executive Director of IDEaS

6:05 PM EST –  “Exploring the Cosmic Graveyard with LIGO and Advanced Research Computing”

Prof. Laura Cadonati, Associate Dean for Research, College of Sciences

6:25 PM EST – “Life after Moore’s Law: HPC is Dead, Long Live HPC!”

Prof. Rich Vuduc, Director of CRNCH

6:45 PM EST –  “PACE Update on Advanced Research Computing at Georgia Tech”

Pam Buffington, Interim Associate Director of Research Cyberinfrastructure, PACE/OIT and Director Faculty & External Engagement, Center for 21st Century University

7:00PM EST – Poster Session Opens (more than 20 poster presenters!!)

8:15PM EST – Event Closes

November 9, 2021

[Complete] Hive Project & Scratch Storage Cable Replacement

Filed under: Uncategorized — Michael Weiner @ 5:01 pm

[Update 11/12/21 11:30 AM]

The pool rebuilding has completed on Hive GPFS storage, and normal performance has returned.

[Update 11/10/21 11:30 AM]

The cable replacement has been completed without interruption to the storage system. Rebuilding of the pools is now in progress.

[Original Post 11/9/21 5:00 PM]

Summary: Hive project & scratch storage cable replacement potential outage and subsequent temporary decreased performance

What’s happening and what are we doing: A cable connecting one enclosure of the Hive GPFS device, hosting project (data) and scratch storage, to one of its controllers has failed and needs to be replaced, beginning around 10:00 AM tomorrow (Wednesday). After the replacement, pools will need to rebuild over the course of about a day.

How does this impact me: Since there is a redundant controller, there should not be an outage during the cable replacement. However, a similar previous replacement caused storage to become unavailable, so this is a possibility. If this happens, your job may fail or run without making progress. If you have such a job, please cancel it and resubmit it once storage availability is restored.
In addition, performance will be slower than usual for a day following the repair as pools rebuild. Jobs may progress more slowly than normal. If your job runs out of wall time and is cancelled by the scheduler, please resubmit it to run again.

What we will continue to do: PACE will monitor Hive GPFS storage throughout this procedure. In the event of a loss of availability occurs, we will update you.

Please accept our sincere apology for any inconvenience that this temporary limitation may cause you. If you have any questions or concerns, please direct them to

November 5, 2021

[Complete – PACE Maintenance Period: November 3 – 5, 2021] PACE Clusters Ready for Research!

Filed under: Uncategorized — Semir Sarajlic @ 5:06 pm

Dear PACE researchers,

Our scheduled maintenance has completed ahead of schedule! All PACE clusters, including Phoenix, Hive, Firebird, PACE-ICE, COC-ICE, and Buzzard, are ready for research. As usual, we have released all users jobs that were held by the scheduler. We appreciate everyone’s patience as we worked through these maintenance activities.

Our next maintenance period is tentatively scheduled to begin at 6:00AM on Wednesday, February 9, 2022, and conclude by 11:59PM on Friday, February 11, 2022. We have also tentatively scheduled the remaining maintenance periods for 2022 for May 11-13, August 10-12, and November 2-4.

The following tasks were part of this maintenance period:


  • [Complete] TensorFlow upgrade due to security vulnerability. PACE will retire older versions of TensorFlow, and researchers should shift to using the new module. We also request that you replace any self-installed TensorFlow packages. Additional details are available on our blog.


  • [Complete][Datacenter] Databank will clean the water cooling tower, requiring that all PACE compute nodes be powered off.
  • [Complete][System] Operating system patch installs
  • [Complete][Storage/Phoenix] Lustre controller firmware and other upgrades
  • [Complete][Storage/Phoenix] Lustre scratch upgrade and expansion
  • [Postponed][Storage] Hive GPFS storage upgrade
  • [Complete][System] System configuration management updates
  • [Complete][System] Updates to NVIDIA drivers and libraries
  • [Complete][System] Upgrade some PACE infrastructure nodes to RHEL 7.9
  • [Complete][System] Reorder group file
  • [Complete][Headnode/ICE] Configure c-group controls on COC-ICE and PACE-ICE headnodes
  • [Complete][Scheduler/Hive] separate Torque & Moab servers to improve scheduler reliability
  • [Complete][Network] update ethernet switch firmware
  • [Complete][Network] update IP addresses of switches in BCDC

If you have any questions or concerns, please contact us at You may read this message and prior updates related to this maintenance period on our blog.


-The PACE Team


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