• ​​​​​​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
cuda-gdb segmentation fault on startup Owens, Pitzer, Software Resolved

The CUDA debugger, cuda-gdb, can raise a segmentation fault immediately upon execution.  A workaround before executing cuda-gdb is to unload the xalt module, e.g.: 

module unload...
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6 years 4 months ago 4 years 5 months ago
OnDemand Apps will not open OnDemand Resolved

Since the 10.9.5 OS X update, Apple has changed its security model to only support applications from the Mac App Store and identified developers.  This has caused OnDemand apps to fail to run with...

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11 years 11 months ago 10 years 9 months ago
HWloc warning: Failed with: intersection without inclusion Ascend, Cardinal Resolved
(workaround)

When running MPI+OpenMP hybrid code with the Intel Classic Compiler and MVAPICH 3.0, you may encounter the following warning message from hwloc:

... Read more
1 year 10 months ago 1 year 4 months ago
Owens login nodes are impacted due to switch replacement on Thursday, Jan 17, 2019 login, Owens Resolved

We will perform the replacement work of Ethernet switches from 12pm to 3pm on Thursday, Jan 17, which includes all login nodes and 2 quick nodes on Owens. As a result, users won't be able to log...

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7 years 8 months ago 7 years 8 months ago
Negative Balance Emails client portal Resolved

Negative balance emails continue to be sent once an application is submitted.

To confirm whether or not you have truly submitted an application for additional resources and that you can...

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7 years 4 months ago 7 years 1 week ago
Emergency maintenance in OSC’s data center Feb 10 2022 Outage, Owens, Pitzer Resolved

OSC will shut down significant portions of the Owens and Pitzer clusters for several hours this afternoon (Thursday, Feb....

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4 years 7 months ago 4 years 7 months ago
Performance Regression of GPU Nodes on Ruby GPU, Ruby Resolved

We currently have performance regression of Ruby's GPU nodes. Some of the GPU nodes on Ruby will remain in a power-saving state even after an application starts using them, resulting in...

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9 years 9 months ago 8 years 3 months ago
Rolling reboot of Owens starting from Oct 10, 2019 login, Owens Resolved

Updated on 1 PM Oct 17, 2019:

The rolling reboot of Owens has been completed. 

Original Post:

We are having rolling reboots of Owens...

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6 years 11 months ago 6 years 11 months ago
2/13/2014 0730 - Reboot of login nodes Outage Resolved

We need to reboot all of the login nodes on our production clusters to fix a minor issue from the downtime. We will be conducting this reboot at 7:30AM on Thursday, February 13th 2014. We expect...

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12 years 7 months ago 12 years 7 months ago
MyOSC Email Delivery Problems client portal Resolved

The Ohio Supercomputer Center (OSC) is experiencing an email delivery problem with several types of messages from MyOSC, impacting user signup, password changes, and possibly others such as budget...

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2 years 8 months ago 2 years 3 months ago

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