Scratch disk

There are three types of scratch disk available on each cluster:

  • /tmp is local disk and is the preferred option for reads and writes that are local to a node.
  • /scratch/gpfs (on Della, Perseus, and Tiger) are parallel filesystems that can be accessed from all nodes in the cluster.
  • /scratch/network is NFS-mounted disk space accessible from Della (this will soon be permanently removed)
  • None of the scratch filesystems are backed up.
  • Scratch disk is available to all users and if the scratch space is exhausted, jobs may not be able to run.
  • Please be considerate and purge any files that are no longer needed or move them to /tigress for longer term storage.