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RCC: Planned HPC Cluster Software Upgrade

Thursday 02/12/2026

Updated 4/17 at 10:20 AM

We are planning a major upgrade to the High-Performance Compute (HPC) cluster. The upgrade remains on schedule for the first week of August (August 3 - 7, 2026) 

This will require one week of downtime. The HPC will be unavailable during this period. 

What's New 

We are upgrading the cluster from AlmaLinux 8.6 to AlmaLinux v9.7. This upgrade includes new versions of system-level Linux tools (e.g., text editors, version control and basic libraries) and a new version of our job scheduler, Slurm. 

As with every platform upgrade, HPC users will likely need to test and recompile any code that relies on specific compiler versions. Our software team can assist if needed. 

Compiler Changes 

As part of this upgrade, we are updating our supported software stack. Please review the following compiler changes, as they may require you to recompile your custom code. 
 
The complete list of planned compiler versions is: 
  *   GNU GCC v11.5.0, and v13.2.0 
  *   Intel v2025.3 
  *   NVHPC v26.1 w/CUDA 12.9 
  *   CUDA v12.9 and v13.1 
 
Deprecating/removing (contact support at rcc.fsu.edu if you need these): 
  *   GNU GCC 4.8.5 and 8.5.0 
  *   Intel 15, 16, and 21 
  *   NVHPC 23.11 
  *   CUDA 11.8 and 12.1 
 
What this means for you: 
  *   System libraries: The RCC Team will recompile all standard supported libraries (OpenMPI, HWLOC, nwchem, etc.). 
  *   Custom code: Users are responsible for testing and recompiling code that relies on the deprecated compiler versions listed above. 
  *   Contingency planning: If your research strictly requires a compiler version slated for removal, please contact us at support@rcc.fsu.edu immediately so we can discuss workarounds. 
 
Our software team can assist with any recompilation or compatibility questions. 

Affected Services 

The following services will be unavailable during the maintenance period: 

  1. High Performance Compute cluster 
  1. Open OnDemand 

The following services will remain ONLINE during the maintenance period: 

  1. Parallel storage* 
  1. Archival storage 
  1. Globus data transfer 
  1. REDCap 
  1. Virtual machines for Research 
  1. Data center services / Academic colocation 

* Note: Parallel storage will be available exclusively through the storage export node (export.rcc.fsu.edu) and Globus, as our HPC login nodes will be offline. 

Questions or concerns? 

If you have any questions, concerns, or comments, please email support@rcc.fsu.edu.