[HPC] Unable to login to spark-login

Incident Report for Center for High Throughput Computing

Monitoring

Users should now be able to login to HPC again. Jobs should not have been affected by this outage, though we encourage you to double-check.

We'll be keeping an eye on the server in case the issue repeats, and update this page accordingly.

Posted Sep 14, 2026 - 09:19 CDT

Investigating

Multiple user reports of being unable to login to the HPC system at spark-login.chtc.wisc.edu.

We are investigating the issue.

Posted Sep 14, 2026 - 08:49 CDT

This incident affects: High Performance Computing (HPC) System (Login Nodes).