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 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 ascending Description Posted Updated
Major network switch outage Network Resolved

01:20 PM 11/14/2018 Update:

...

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7 years 7 months ago 7 years 7 months ago
Pitzer Xfce Desktop through OnDemand is not working OnDemand Resolved

Pitzer Xfce Desktop through OnDemand is not working. Please choose 'Mate' desktop environment instead. We are working to fix this issue now and apologize for any inconvenience. Please contact ...

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7 years 4 months ago 7 years 4 months ago
MPI-IO issues on home directories with Intel MPI 2019.3 Pitzer, Software Resolved
(workaround)

Certain MPI-IO operations with intelmpi/2019.3 may crash, fail or proceed with errors on the home directory. We do not expect the same issue on our GPFS file system, such as the...

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1 year 1 month ago 1 year 1 month ago
Problems with LAMMPS 14May16 Software Resolved

LAMMPS 14May16 was built with the USER-OMP package on Oakley, Ruby, and Owens. Its default behavior is to spawn too many OpenMP threads. lammps/14May16 batch scripts that do not use the USER-OMP...

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9 years 9 months ago 9 years 6 months ago
MyOSC unavailable on Tuesday, August 2, 2022, from 10 am to 12 pm client portal Resolved

We will be adding a charge account structure. MyOSC will be unavailable on Tuesday, August 2, 2022, from 10 am to 12 pm while the update occurs. See...

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3 years 10 months ago 3 years 10 months ago
Ruby is offline Operations Resolved

The Ruby Transitional Cluster (only open to select research groups) is currently offline due to network problems. We expect it will return to service some time after the downtime.

12 years 8 months ago 12 years 4 months ago
Ansys DesignModeler with hardware acceleration Software Resolved
(workaround)

Ansys DesignModeler with hardware acceleration is not working.

With Ansys version greater than 19.1, DesignModeler is working with software rendering mode, but it is very slow.

 ...

6 years 6 months ago 1 year 1 month ago
Oakley and Owens queue issue Batch Resolved

We are experiencing a problem with the queuing system on oakley and owens that is delaying or preventing new jobs from running. Our systems staff is investigating.

 

8 years 5 months ago 8 years 5 months ago
Login problem Resolved

Around 10am EDT, OSC began to experience problems with our infrastructure.  Login sessions began to be affected around 11:30 EDT. The problem was resolved around 1pm EDT, and all systems have...

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2 years 1 month ago 2 years 1 month ago
Oakley login node problems Resolved

One of the Oakley login nodes (oakley01) has experienced some hardware failures and is temporarily out of service while repairs are ongoing.

Please limit your interactive use of the...

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11 years 6 months ago 11 years 6 months ago

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