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File System | Suitable for ... | Technology | Features | Quota | ||||||||||
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| HOME | permanent files, e. g. profile, utilities, sources, libraries, etc. | NFS | It is backed up. Snapshots available. See HPC2020: Recovering data from snapshots Throttled I/O bandwidth from parallel compute nodes (less performance) |
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| PERM | permanent files without the need for automated backups, smaller input files for serial or small processing, etc. | NFS | No backup Snapshots available. See HPC2020: Recovering data from snapshots Throttled I/O bandwidth from parallel compute nodes (less performance) DO NOT USE IN PARALLEL APPLICATIONS DO NOT USE FOR JOB STANDARD OUTPUT/ERROR |
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| HPCPERM | permanent files without the need for automated backups, bigger input files for parallel model runs, climate files, std output, etc. | Lustre | No Backup No snapshots No automatic deletion |
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| SCRATCH | all temporary (large) files. Main storage for your jobs and experiments input and output files. | Lustre | Automatic deletion after 30 days of last access - implemented since 27 March 2023 No snapshots No backup |
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SCRATCHDIR | Big temporary data for an individual session or job, not as fast as TMPDIR but higher capacity. Files accessible from all cluster. | Lustre | Deleted at the end of session or job Created per session/ job as a subdirectory in SCRATCH | part of SCRATCH quota | ||||||||||
TMPDIR | Fast temporary data for an individual session or job, small files only. Local to every node. | SSD on shared (GPIL) nodes (*f QoSs) | Deleted at the end of session or job Created per session/ job | 3 GB per session/job by default. Customisable up to 40 GB with
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RAM on exclusive parallel compute nodes nodes (*p QoSs) | no limit (maximum memory of the node) |
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