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Due to the unavailability of NFS-based filesystems at this stage, HOME is temporarily setup on Lustre and PERM is not available yet. | |
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group | ecmwf
The filesystems available are HOME, PERM, HPCPERM and SCRATCH, and are completely isolated from those in other ECMWF platforms in Reading such as ECGATE or the Cray HPCF.
Filesystems from those platforms are not cross-mounted either. This means that if you need to use data from another ECMWF platform such as ECGATE or the Cray HPCF, you will need to so transfer it first using scp or rsync. See HPC2020: File transfers for more information.
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. Limited I/O performance | 20GB |
PERM | permanent files without the need for automated backups, smaller input files for serial or small processing, std output, etc. | NFS | It is backed up. Limited I/O performance | 20GB |
HPCPERM | permanent files without the need for automated backups, bigger input files for parallel model runs, climate files, etc. | NFS | No Backup No automatic deletion | 1TB |
SCRATCH | all temporary (large) files. Main storage for your jobs and experiments input and output files. | Lustre | Automatic deletion to be configured at a later stage No backup | 4TB |
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 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 compute nodes (*p QoSs) | no limit (maximum memory of the node) |
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