The Delta resource will undergo maintenance from 6:00AM to 8:00PM CDT on Wednesday October 4th, 2023. Additional notices will be sent if changes to the plan occur. 

During the maintenance period the following changes will be made:

• Minor updates to the OS.
• pmix package will be updated to 3.2.5 to address security vulnerability
• ucx will be updated to a  Mellanox release to improve functionality
• apptainer will be updated to 1.2.2 from 1.1.9.
• No expected changes to the existing software stack.
• Software for the Delta high-speed network (HSN) switches and fabric manager will be upgraded.
• Lustre file system software will be updated to address known issues.
• NVIDIA GPU driver will be upgraded to support for CUDA 12.2, while the default CUDA software module will remain at CUDA 11.6.1. 

All Delta resources will be unavailable during the maintenance period including:

• Delta login nodes - unavailable
• Delta compute nodes - unavailable
• Delta services
  • Open OnDemand - unavailable 
  • Delta Globus Online endpoint - unavailable

All running jobs will have been drained in advance of the maintenance. Queued jobs will persist and be eligible to run once maintenance is complete. 

A follow-up message will be sent once maintenance is complete.

Please send questions to help@ncsa.illinois.edu and be sure to mention Delta in the subject. 

--Delta Project Office