System Status

Scheduled OSC System Downtimes

OSC strives to minimize the number of system downtimes and provide clients with significant advance notice but reserves the right to change the date(s) of these downtimes and/or add additional downtimes to improve the performance of our services.

Tuesday, March 22, 2022
Tuesday, June 21, 2022
Tuesday, September 27, 2022
Tuesday, December 13, 2022

Active System Messages

Planned network maintenance Jan 28 2022

There is a planned network maintenance with OSC systems on 28 Jan 2022. It is expected to cause a loss of connection to OSC systems for up to 5 mins during the maintenance window of 5am-6am on 28 Jan 2022. Please contact if there are any questions.

Home directory quota is inaccurate after Dec 14 Downtime

The home directory quota when logging into systems, or displayed through OnDemand or client portal ( is inaccurate after Dec 14 Downtime. For more information see this page:

OSC Classroom Support

CLASSROOM RESOURCES FOR DISTANCE LEARNING If your class has lost or limited access to computer labs, the Ohio Supercomputer Center might be able to help by providing no-cost access to cloud computing resources. Classes and workloads of any size can gain access. OSC's web-browser interface to its substantial Linux computer systems provides novice users with virtual desktops preloaded with applications, such as MATLAB, RStudio, or Jupyter Notebook. As an example, an OSU undergrad statistics class recently used iPads to remotely access RStudio on OSC systems.

Known Issues (unresolved)

A list of all known issues, including those that have been resolved, can be found here.

Titlesort descending Category Description Posted Updated
A partial-node MPI job failed to start using Intel MPI mpiexec Owens, Pitzer, Software

A partial-node MPI job may fail to start using mpiexec from intelmpi/2019.3 and intelmpi/2019.7 with error messages like

[mpiexec@o0439.ten.osc.... Read more          
1 year 2 months ago 2 months 6 days ago
Ansys DesignModeler with hardware acceleration Software

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.

 ... Read more

2 years 1 month ago 2 years 1 month ago
Cannot use mpiexec/mpirun from OpenMPI in an interactive session Owens, Pitzer, Software

We found mpiexec/mpirun from OpenMPI can not be used in an interactive session (launched by sinteractive) after upgrading Pitzer and... Read more

10 months 3 weeks ago 2 months 6 days ago
CP2K 6.1 would fail on Pitzer Cascade Lakes (48-core) node: Pitzer

CP2K 6.1 would fail with the following error when running on Pitzer Cascade Lakes (48-core) node:

Program received signal SIGFPE: Floating-point exception - erroneous arithmetic... Read more          
7 months 2 days ago 7 months 2 days ago
cuda-gdb segmentation fault on startup Owens, Pitzer, Software

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... Read more          
1 year 9 months ago 1 year 9 months ago