ARC User Documentation
Getting Started
Information for Faculty/PIs
Resources
Common Datasets
Computational Resources
GPUs available on ARC systems
ARC Maintenance Outages
Open OnDemand
Storage Resources
System Changes History
ARC System Changes: 2025-05
ARC System Changes: 2025-01
Software
Usage
ARC User Documentation
Resources
System Changes History
System Changes History
Contents:
ARC System Changes: 2025-05
Partition Changes
Consolidation of partitions
Decoupling CPU and Memory Requests to enable “right-sizing” of jobs
Job Billing
Free Tier Increases to 1M units per PI monthly
Billing Consistently Applies to all Clusters
Billing Reflects All Resources Allocated
Adding QOS Options for Scheduling Flexibility
Cluster organization
Infer cluster being retired
Operating System Upgrade on All Clusters
/globalscratch
symlinks for
/scratch
are removed
Cluster data to be made “private”
New tools for cluster monitorization
Software and Modules Unification
Mount point updates for software stacks
Frequently Asked Questions (FAQ)
Slurm jobs
Software
Billing
ARC System Changes: 2025-01
Outline of Changes
Tinkercliffs Operating System Upgrade from CentOS 7 to Rocky 9
New Open OnDemand
/scratch
and
/common
replacing
/globalscratch
and
/global
/fastscratch
and
/vtarchive
removed from clusters
Answers for some frequently asked questions (FAQ)
“The software module I used before maintenance isn’t there now. Can you reinstall it for me?”
“What does ‘Legacy Apps’ on Open OnDemand mean?”
“How can I recover data from /fastscratch?”