• ​​​​​​Date: Wednesday, September 16, 2026

Known issues

Unresolved known issues

Known issue with an Unresolved Resolution state is an active problem under investigation; a temporary workaround may be available.

Resolved known issues

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.

Known Issues

Title Category Resolutionsort descending Description Posted Updated
OnDemand has NOT been working with external providers since 08/22 OnDemand Resolved

Updates on 9:40AM August 23, 2017: this issue has been resolved. 

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Issue:

User can NOT login to OnDemand (ondemand.osc.edu)...

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9 years 3 weeks ago 9 years 3 weeks ago
Jobs reports 'excessive memory usage' message Owens, Pitzer Resolved

...

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6 years 6 months ago 4 years 5 months ago
Lustre Updates filesystem Resolved

9/10/14 - We have not seen any additional crashes of the Lustre servers since making this change.

8/26/14 
- Lustre jobs are being accepted as of 10AM this...

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12 years 3 weeks ago 12 years 1 week ago
Rolling Reboot for Security Fix Resolved

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...

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3 months 6 days ago 2 months 3 weeks ago
HCOLL-related failures in OpenMPI applications Cardinal, Software Resolved
(workaround)

Several applications using OpenMPI, including HDF5, Boost, Rmpi, ORCA, and CP2K, may fail with errors such as

mca_coll_hcoll_module_enable() coll_hcol: mca_coll_hcoll_save_coll_handlers...
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1 year 11 months ago 1 year 4 months ago
Stale File Handles on GPFS clients filesystem Resolved

OSC is experiencing some problems with the Project and Scratch filesystems that are resulting in some jobs seeing "stale file handles". We are investigating the problem and will provide updates as...

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7 years 9 months ago 7 years 8 months ago
Correction on OSC project restriction email Account Management Resolved

Updated:

OSC has resolved this morning's issue and reverted impacted projects back to an ACTIVE status. Queued jobs under those projects will be able to start once today's...

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5 years 2 months ago 5 years 2 months ago
ondemand gpu request error Nov 2021 Batch, OnDemand, Pitzer Resolved

When requesting an interactive session in ondemand and requesting gpu resources, users may see an error similar similar to  "sbatch: error: Invalid generic resource (gres) specification"

...

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4 years 9 months ago 4 years 9 months ago
Nvidia drivers on Oakley GPU Resolved

We upgraded the drivers for the Nvidia GPUs on all of our clusters during the downtime this week. Unfortunately, we are noticing some subtle problems with the GPUs on Oakley. We will be rolling...

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9 years 11 months ago 8 years 3 months ago
MPI fails with UCX 1.18 Software Resolved
(workaround)

After the downtime on August 19, 2025, users may encounter UCX errors such as:

UCX ERROR no active messages transport to <no debug data>: self/memory -...
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1 year 3 weeks ago 11 months 2 weeks ago

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