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The Frontenac cluster uses a shared GPFS filesystem for all file storage. User files are located under /global/home, shared project space under /global/project, and network scratch space under /global/scratch. In addition to the network storage, each compute node has a 1.5TB local hard disk for fast access to local scratch space by jobs using the location specified by the $TMPDISK environment variable. All files in the local scratch space are assumed to be deleted automatically when corresponding jobs finish.