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The Lustre based work filesystem /scratch is the main work filesystem for the HLRN clusters. Each user can distribute data to different directories.

• user directory parallel input/output for production jobs
  • moderate number of files
  • transient nature of data
• no backup, no disaster recovery
• available directories
  • WORK=/scratch/usr/${USER}
  • large intput/output data for production jobs
  • the intention is to use this data for the user only
  project directories
  • , for user data
  • project directory /scratch/projects/<projectID>
  • large intput/output data for production jobs
  • the intention is to share this data within the project group
  TMPDIR directory
  • , for project data
  • TMPDIR=/scratch/tmp/${USER}
  • , applications and compilers store data temporarily

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