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 |
|---|---|---|---|---|---|
| STAR-CCM+ MPI job failure | Cardinal, Software |
Resolved (workaround) |
STAR-CCM+ encounters errors when running MPI jobs using Intel MPI or Open MPI, displaying the following message: ib_iface.c:1139 UCX ERROR Invalid active_speed on...Read more |
1 year 8 months ago | 23 hours 51 min ago |
| Temporary Login Node Instability on Ascend | Ascend |
Unresolved |
We are currently experiencing temporary instability on the Ascend login nodes, which may result in slow response times or unexpected session disconnects. Our team is actively... Read more |
3 weeks 1 day ago | 3 days 11 hours ago |
| Rolling Reboot for Security Fix |
Unresolved |
A rolling reboot is in progress to address CVE-2026-23111 (nf_tables logic bug) for all clusters, including Ascend, Cardinal, and Pitzer. Login nodes will be rebooted first and access... Read more |
1 week 2 days ago | 3 days 14 hours ago | |
| cuMemHostRegister Fails with CUDA_ERROR_INVALID_VALUE on RHEL 9.6 | Ascend, Cardinal, GPU, system software |
Unresolved |
After upgrading the operating system to RHEL 9.6 during the scheduled downtime on May 12, 2026, applications utilizing UCX (... Read more |
3 weeks 2 days ago | 3 weeks 2 days ago |
| STAR-CCM+ OpenMPI Job Failed due to Out-of-Memory | Cardinal, Software |
Unresolved (workaround) |
After the scheduled downtime on May 12, 2026, STAR-CCM+ encounters out-of-memory errors when running OpenMPI jobs. A message... Read more |
3 weeks 2 days ago | 3 weeks 2 days ago |
| Nsight GPU profiler not working due to DCGM conflict | GPU, Infrastructure |
Resolved |
UPDATE (Mar 15, 2023) After the downtime on Mar. 14, 2023, OSC enabled a new Slurm option |
3 years 3 months ago | 1 month 13 hours ago |
| MATLAB (legacy) r2024a fails to launch on OnDemand Desktop | Software |
Resolved (workaround) |
As of the downtime on 05/12/26 MATLAB (legacy) has stopped working when users try to open .m files in the GUI application for version r2024a. At the time we suggested to please use the... Read more |
1 month 1 week ago | 1 month 2 days ago |
| ptrace Disabled Across OSC Systems |
Unresolved |
|
1 month 5 days ago | 1 month 5 days ago | |
| MVAPICH 3.0 hang due to PMI mismatch with Slurm | Software |
Resolved (workaround) |
Applications such as Quantum ESPRESSO, LAMMPS, and NWChem experienced hangs with MVAPICH 3.0 due to a PMI mismatch. MVAPICH 3.0 was built with PMI-1, while newer Slurm versions on RHEL 9... Read more |
8 months 2 weeks ago | 1 month 1 week ago |
| Reboot of Public-Facing Systems for Security Fix |
Resolved |
Updates on May 12: All public-facing systems have been rebooted. Original Post: Due to a critical... Read more |
1 month 3 weeks ago | 1 month 1 week ago |
