ECN services outage - ITaP Research Computing systems impacted

January 10, 2015  8:00am – 12:00pm
Carter, Conte, Hansen, Peregrine1, Radon, Rossmann

Engineering Computing Network (ECN) in coordination with Physical Facilities will be conducting a planned power outage in the MSEE building from 8am until noon on Saturday, January 10th, 2015. No one will be allowed to enter the building during this time for safety reasons. A significant number of ECN services will be affected, including several software license servers for ITaP Research Computing systems that are hosted by ECN.

ITaP Research Computing cluster job scheduling is not affected by the outage, but licenses for software like Matlab, Ansys/Fluent, Sentaurus, Comsol, Abaqus, PowerFlow, and PowerAcoustics will be unavailable during the outage period, which may lead to license-controlled software refusing to work and jobs exiting with error conditions.

Users of Matlab are encouraged to submit jobs requesting license tokens available from the job scheduler. These are specified using the gres attribute in your job submission command. For example, to request a single Matlab license:

$ qsub -l nodes=1:ppn=1,walltime=01:00:00,gres=MATLAB+1 myjob.sub

This way the job is guaranteed to only start execution when the necessary license is available. More examples for various Matlab toolboxes are available in the user guides.

Any other jobs using ECN licensed software that start during this downtime will not be able to check out a license and may result in jobs exiting with errors. As well, any software that requires a constant connection to the ECN licensing servers will stop during this time.

Further information regarding affected ECN services may be found on the ECN website.

If you are unsure if your software will be affected or have any other concerns please contact us at

Originally posted: December 19, 2014  11:00am

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