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.

Title Category Description Posted Updated
Ondemand error when terminating interactive app OnDemand

When trying to delete an interactive session through OnDemand, you may receive an error page about 'No such file'. This can be disregarded. Simply navigate back to the interactive sessions page... Read more

1 year 1 month ago 1 year 1 month 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
Jobs reports 'excessive memory usage' message Owens, Pitzer

... Read more

1 year 10 months ago 1 year 9 months ago
Error ' undefined reference to uuid@' with MVAPICH2 in Conda environment Owens, Pitzer, Software

Users may encoutner an error like ' undefined reference to `uuid_unparse@UUID_1.0' while compiling MPI applications with mvapich2 in some Conda enivronments. We found pre-installed... Read more

1 year 10 months ago 1 year 10 months ago
Incorrect MPI launcher and compiler wrappers with Conda environments python/2.7-conda5.2 and python/3.6-conda5.2 Owens, Pitzer, Ruby, Software

Users may encounter under-performing MPI jobs or failures of compiling MPI applications if you are using Conda from system. We found pre-installed mpich2 package in some Conda environments ... Read more

1 year 10 months ago 1 year 10 months ago