2025 ARC Summer Maintenance

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.

Maintenance Dates

  • Great Lakes: June 9-10
  • Armis2/Lighthouse: June 9-12

HPC (High-Performance Computing) - All Clusters

Summer 2025
(version changes in bold)		Winter 2025

Red Hat 8.10

  • Kernel  4.18.0-553.50.1.el8_10.x86_64
  • glibc-2.28-251.el8_10.16.x86_64
  • ucx-1.16.0-1.2310409.x86_64 (OFED LTS provided)
  • gcc-8.5.0-26.el8_10.x86_64

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

Mlnx-ofa_kernel-modules 

  • OFED-23.10-4.0.9

Mlnx-ofa_kernel-modules 

  • OFED 23.10-2.1.3.1

Slurm 24.11.5 compiled with:

  • PMIx
    • /opt/pmix/4.2.9
    • /opt/pmix/5.0.7
  • hwloc 2.2.0-3 (OS provided)
  • ucx-1.16.0-1.2310409.x86_64 (OFED LTS provided)
  • slurm-libpmi
  • slurm-contribs

Slurm 24.11.3 compiled with:

  • PMIx
    • /opt/pmix/4.2.9
    • /opt/pmix/5.0.4
  • hwloc 2.2.0-3 (OS provided)
  • ucx-1.16.0-1.2310213.x86_64 (OFED LTS provided)
  • slurm-libpmi
  • slurm-contribs
PMIx LD config /opt/pmix/4.2.9/libPMIx LD config /opt/pmix/4.2.9/lib

PMIx versions available in /opt:

  • 4.2.9
  • 5.0.7

PMIx versions available in /opt:

  • 4.2.9
  • 5.0.4

Singularity CE (Sylabs.io)

  • 4.1.3
  • 4.3.1

Singularity CE (Sylabs.io)

  • 3.11.5
  • 4.1.3

NVIDIA driver 570.124.06

  • CUDA 12.8.1 support

NVIDIA driver 560.35.05

  • CUDA 12.6.3 support
Open OnDemand 4.0.2
(might get updated if performance patch is released before maintenance)		Open OnDemand 3.1.9

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 default modules will be updated to the latest version installed, with new versions installed for select packages. Some notable updates include will include the following:

  • R 4.4.0 -> 4.4.3 and updates to related dependencies:
    • RStudio 2024.04.1 -> 2025.05.X
    • Rtidyverse 4.4.0 -> 4.4.3
    • Rgeospatial 4.4.0-2024-05-11 -> 4.4.3-2025-04-21
    • Ropenblas 4.4.0 -> 4.4.3
    • Rmpi 4.4.0 -> 4.4.3
  • OpenMPI 5.0.3 -> 5.0.7 and updates to related dependencies such as OpenMPI with cuda support
    • UCX 1.14.1 -> 1.18.0 built with support for Nvidia GDRCopy
  • Python 3.12 -> 3.13.2
  • CUDA 12.6 -> 12.8
  • COMSOL 6.2 -> 6.3
  • StataMP 18 -> 19
The following software packages will be decommissioned (removed from Great Lakes, Armis2 and Lighthouse support) during the maintenance upgrade, and will be unavailable post maintenance.
  • IDL version 8.5 and 8.7.2
    • Replaced by IDL version 9.0
  • PGI compilers
    • Replaced by OpenMPI+CUDA, GCC/13 and NVHPC toolkits
  • Intel compilers version 18.0
    • Replaced by Intel version 2022

Storage

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)

  • 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.