2025 ARC Summer Maintenance

ARC Maintenance Updates

Maintenance Dates:

Great Lakes: 

  • June 9-10

Armis2/Lighthouse:

  • June 9-12

Overview

•    Overview: This page provides key details about the maintenance schedule and purpose.  We will add content with specifics about the maintenance as we complete our planning and building.

HPC (High-Performance Computing) - All Clusters

NEW version in BOLD

OLD version

Red Hat 8.10 EUS

Red Hat 8.8 EUS

  • Kernel 4.18.0-477.81.1.el8_8.x86_64

  • glibc-2.28-225.el8_8.11.x86_64

  • ucx-1.16.0-1.2310213.x86_64 (OFED LTS provided)

  • gcc-8.5.0-18.2.el8_8.x86_64

  
  
  
  
  
  
  


HPC (High-Performance Computing) - Great Lakes System

•   Great Lakes /home directory permissions which have been opened by a user to anyone will be updated to their initial permissions.  We will be working with users between now and maintenance to correct these. 

HPC (High-Performance Computing) - Armis2 and Lighthouse

  • The Data Center Engineering team will be working with contractors to perform the annual preventative maintenance on the data center where Armis2 and Lighthouse are racked.
  • Lighthouse /home directory permissions which have been opened by a user to anyone will be updated to their initial permissions.  We will be working with users between now and maintenance to correct these.  This is already in place for Armis2.

Preventative Maintenance Work

•    MDC (Main Data Center) Maintenance

•    Planned Shutdown: MDC will undergo a shutdown for comprehensive maintenance tasks, including:

•    Emergency Power Off (EPO) testing

•    Fire Alarm testing

•    ECS (Environmental Control System) maintenance

•    Electrical system scanning

•    UPS (Uninterruptible Power Supply) maintenance

•    High-voltage systems testing

 

HPC Software

All software libraries will be updated to the latest version, with these updates set as the new default versions.


Storage

1.    Turbo System Networking Upgrade

•    Networking Update: Upgrading networking infrastructure for Turbo to improve connectivity and resilience.

Globus

•    Version: To Be Determined (TBD)

SES (Service Environment Systems)

1.    Firmware and Networking Updates:

•    Firmware Updates: Applying latest firmware versions to ensure stability and security.

•    Networking Configuration and Hardware Update: Updating networking configuration and hardware. No end-user impacts expected.

Contact Information

For questions or additional support, please contact ARC Support at [ARC Support Email/Contact Information].

This format provides a clear breakdown of maintenance tasks and updates across different ARC services, with specifics on each section.