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Jobs Running
All jobs MUST be run through SGE. If you need more information on using SGE, please take a look at the SGE FAQ.
Please do not run jobs directly on the head node. It is reserved exclusively for login and interaction with the queue. The scheduler used is SGE and it is set up to interface seamlessly with your MPI jobs. Under no circumstances should you submit an MPI job manually from the head node. To ensure that the load across the cluster is properly balanced as well as to prevent time-critical applications such as benchmarking, use of the queue is imperative.
Logging in
To login to PrairieFire, please use SSH. From a UNIX/Linux machine with SSH installed, type 'ssh USERNAME@prairiefire.unl.edu' where USERNAME is your requested username.
Publishing/Acknowledgements
HCC asks to be notified of any presentation or publication that results in entirely or in part from use of HCC. If possible and practical, please send an electronic copy to David Swanson, Director of HCC. In addition, please mail a hard copy of publications to David Swanson, SHOR 118J, UNL 68588-0150.
Users are asked to include the following line as acknowledgement of HCC use: This work was completed utilizing the Holland Computing Center of the University of Nebraska -- Lincoln.
Account 'ownership'
All accounts on HCC machines are to be 'owned' by the research advisor or head of the group you signed up with. This does not allow for a research advisor to snoop through his/her groups' files, but does allow them to retrieve data for research purposes. Further, all files on HCC machines can be searched through by HCC admins for purposes of solving machine problems (ie. checking for breaking of policy or trying to find out why the machine is being bogged down) or for machine security.
Node limits
The policy for the use of PrairieFire is that you are restricted to the number of nodes you use by your research group.
User regulations
- Users are not allowed to rsh to any interior nodes, and work from there, unless special permission has been granted by the system administrators.
- Submit jobs using SGE.
- NEVER use nohup, run your programs in the background, or run large CPU intensive programs on head node. Your jobs will be terminated.
- Users are also agree to abide by the Computer Use Policies at UNL.
PrairieFire support
Contact HCC Support at
