We are currently experiencing temporary instability on the Ascend login nodes.
A rolling reboot is in progress to address CVE-2026-23111 for all clusters, including Ascend, Cardinal, and Pitzer.
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 |
|---|---|---|---|---|---|
| Large MPI job startup hang with mvapich2/2.3 and mvapich2/2.3.1 | Owens, Pitzer, Software |
Resolved (workaround) |
We have found that large MPI jobs may hang at startup with |
6 years 7 months ago | 1 year 1 month ago |
| "pbsdcp" is not working on Oakley |
Resolved |
12:35PM 5/24/2017 Update:
|
9 years 3 weeks ago | 9 years 3 weeks ago | |
| Backup Issues | Backups |
Resolved |
Updates on 04/17: OSC has conducted thorough validations to ensure the integrity of our backup data for user home directories and the /fs/ess filesystem. ... Read more |
2 years 2 months ago | 2 years 2 months ago |
| Temporary StarCCM License Outage | Cardinal |
Resolved |
StarCCM software will be temporarily unavailable starting February 21, 2026. Why: Our current license expires on Feb 21 at 11:59pm EST. |
3 months 3 weeks ago | 3 months 3 weeks ago |
| my.osc.edu logins failing | Account Management |
Resolved |
Logins to my.osc.edu are failing. This is unrelated to our InfiniBand issue; a router change at OARnet is the believed cause. They are working on re-establishing the necessary routing. |
11 years 10 months ago | 11 years 10 months ago |
| Rolling reboot of Pitzer cluster, starting from Feb 03, 2021 | Batch, login, Pitzer |
Resolved |
Updates at 10AM Feb 11, 2021: The rolling reboot is completed. Original Post: We will have rolling reboots of Pitzer cluster including... Read more |
5 years 4 months ago | 5 years 4 months ago |
| LAMMPS ppn=40 GPU problem on Pitzer | Pitzer, Software |
Resolved |
On Pitzer both LAMMPS 22Aug18 and 5Jun19 gpu jobs with ppn=40 hang immediately after lammps begins execution. A workaround is to use ppn=39. |
7 years 7 months ago | 6 years 5 months ago |
| OSC will remove Jupyter MATLAB Kernel | Cardinal, OnDemand |
Resolved |
OSC will remove the default MATLAB Jupyter Kernel on Tuesday, May 20th, 2025. To create your own Jupyter MATLAB Kernel please follow the documentation on the MATLAB Page... |
1 year 1 month ago | 1 year 1 month ago |
| NCCL hang on Ascend dual-GPU nodes | Ascend, GPU, Software |
Resolved (workaround) |
Users may encounter the following message and experience NCCL hangs if the first operation is a barrier when running multi-GPU training. We have identified... Read more |
1 year 2 weeks ago | 1 year 2 weeks ago |
| GPFS hang Issue on 09/08/2016 | filesystem |
Resolved |
On Thursday, Sept 8 starting at 19:37, we had some bad interaction that appears to have been caused by the backup client, and the GPFS servers. This resulted in a GPFS hang that propagated I/O... Read more |
9 years 9 months ago | 9 years 9 months ago |
