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For unshared local IO this is the best performing file system to use.
| Lise: SSD | Lise: CAS | Emmy: SSD | |
|---|---|---|---|
| Access | via partition: using | via partition: using via partition: using | |
| Type and size | Intel NVMe SSD DC P4511 (2 TB) | Intel NVMe SSD DC P4511 (2 TB) using Intel Optane SSD DC P4801X (200 GB) as write-trough cache | Intel S-ATA SSD DC S4500 (480 GB) Intel NVMe SSD DC P4511 (1TB) |
FastIO
WORK is extended with 4 (Lise)/8 (Emmy) additional OST's using NVMe SSDs to accelerate heavy (random) IO-demands. To accelerate specific IO-demands further striping for up to these 4 /8 OSTs is available.
Access:
Lise: create a new directory in $WORK and set lfs setstripe -p flash <dir>
Emmy: Using either $SHARED_SSD_TMPDIR for a job specific folder (like $LOCAL_TMPDIR) oder set the storage pool ddn_ssd for a new directory like for Lise (there the SSD pool is called flash).
Size:
Lise: 55 TiB - quotedEmmy: 120 TiB - quoted
Finding the right File System
If your jobs have a significant IO part we recommend asking your consultant via support@hlrnsupport@nhr.zib.de to recommend the right file system for you.
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