OSC systems staff will execute a rolling reboot across all active compute clusters (Pitzer, Ascend, and Cardinal) beginning Wednesday, September 16.
Known issue with an Unresolved Resolution state is an active problem under investigation; a temporary workaround may be available.
A known issue with a Resolved (workaround) Resolution state is an ongoing problem; a permanent workaround is available which may include using different software or hardware.
A known issue with Resolved Resolution state has been corrected.
| Title | Category | Resolution | Description | Posted |
Updated |
|---|---|---|---|---|---|
| Rolling reboots across all OSC clusters beginning 09/16/2026 |
Unresolved |
|
1 week 4 hours ago | 6 hours 24 min ago | |
| Client Portal Service Interruption |
Resolved |
We are currently experiencing an outage affecting access to the myOSC client portal (my.osc.edu). Users attempting to access the site may encounter error messages. We apologize for the... Read more |
6 hours 58 min ago | 6 hours 31 min ago | |
| Emergency Maintenance: Research Data Storage Scratch Purge | filesystem |
Resolved |
|
3 weeks 5 days ago | 2 weeks 6 days ago |
| Temporary Login Node Instability on Ascend and Cardinal | Ascend, Cardinal |
Unresolved |
We are currently experiencing temporary instability on the Ascend and Cardinal login nodes, which may result in slow response times or unexpected session disconnects. Our team is actively... Read more |
3 months 3 weeks ago | 3 weeks 6 days ago |
| NCCL 2.29 Performance Regression on Ascend and Pitzer Clusters | Ascend, Pitzer, Software |
Resolved (workaround) |
We have identified a potential performance regression in point-to-point communication when using NCCL version 2.29 on the Ascend and Pitzer clusters, which results... Read more |
1 month 2 weeks ago | 1 month 2 weeks ago |
| Rolling Reboot of all three HPC clusters beginning July 7 |
Resolved |
A rolling reboot is scheduled to remediate a |
2 months 3 weeks ago | 2 months 2 hours ago | |
| ptrace Disabled so Debuggers and Tracers Do Not Work |
Resolved |
|
4 months 1 week ago | 2 months 9 hours ago | |
| Linaro MAP fails to launch in linaro-forge/23.0.4 | Cardinal, Software |
Resolved (workaround) |
Linaro MAP can fail to work in linaro-forge/23.0.4 |
2 months 2 days ago | 2 months 2 days ago |
| cuMemHostRegister Fails with CUDA_ERROR_INVALID_VALUE on RHEL 9.6 | Ascend, Cardinal, GPU, system software |
Resolved |
After upgrading the operating system to RHEL 9.6 during the scheduled downtime on May 12, 2026, applications utilizing UCX (... Read more |
3 months 3 weeks ago | 2 months 4 weeks ago |
| STAR-CCM+ OpenMPI Job Failed due to Out-of-Memory | Cardinal, Software |
Resolved (workaround) |
After the scheduled downtime on May 12, 2026, STAR-CCM+ has been encountering out-of-memory errors when running OpenMPI jobs. A message similar to the following... Read more |
3 months 3 weeks ago | 3 months 7 hours ago |
