Minnesota Supercomputer Institute

Regatta (IBM Power4) Policies and Procedures

Information about the policies and procedures applicable to this machine. For policies and procedures common to all machines, see the main policy page.

Home Directories

There is 14.5 TB of file space has been allocated for user home directories. The default quota for home directories is 5 GB.

Interactive Use

There is only one node for interactive jobs. Interactive use should be restricted to compiling codes and code testing (both serial and parallel), and for submitting jobs to the queue. For parallel jobs, you may use up to four processors for running a job up to 30 minutes. Larger jobs and all productions jobs must be submitted to the queues.

Scratch Space

Currently, there is 3.2 TB of file space allocated for scratch files in the /scratch1, /scratch2, /scratch3, and /scratch4 filesystems. The default quota for scratch space is 50 GB in each of the scratch spaces. A scratch clean up process runs daily on the system and all files in the scratch directories that have not been modified for 14 days will be deleted.

Users may request exceptions to the scratch clean up and additions to their quotas by sending e-mail to user support.