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| Personal directories | Project directories | |||||
|---|---|---|---|---|---|---|
| Mountpoint | /albedo/home/$USER | /albedo/work/user/$USER | /albedo/scratch/user/$USER | /albedo/work/projects/$PROJECT | /albedo/scratch/projects/$PROJECT | /albedo/burst |
| Comes with | HPC_user account: https://id.awi.de → Start a new request/Bestellung → IT Service → HPC → Add to chart/In den Einkaufswagen | Apply for Quota here: https://cloud.awi.de/#/projects | -- | |||
| Block Quota | 100 GB (fixed) | 3 TB (fixed) | 50 TB (fixed) | 30 €/TB/yr (variable) | 10 €/TB/yr (variable) | |
| File Quota | max(1,log(1.5*BlockQuota)) * 1e6 | |||||
| Delete | 90 days after user account expired | all data older than 90 days | 90 days after project expired | all data older then 90 days | after 10 days | |
| Security | Snapshots for 100 days | -- | Snapshots for 100 days | -- | -- | |
| Snapshots | /albedo/home/.snapshots/ | /albedo/work/user/.snapshots/ | -- | /albedo/work/projects/.snapshots/ | -- | |
| Owner:Group | $USER:hpc_user | $OWNER:$PROJECT | root:root | |||
| Permissions | 2700 → drwx--S--- | 2770 → rwxrws--- | 1777 → rwxwrxrwt | |||
| Focus | many small files | large files, large bandwidth | large files, large bandwidth | low latency, huge bandwidth | ||
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Considerations: Where should I store my data?
| /work | Subject | /isibhv | ||
|---|---|---|---|---|
| pro | con | pro | con | |
| 100 Gb Infiniband | albedo intern only | Acceptability | available from everywhere (inside AWI) | 10 Gb Ethernet |
| low | Latency | higher | ||
| about 10-30 €/TB/yr | Cost | about 100-125 €/TB/yr | ||
| snapshots | Security | snapshots, automatic tape backup available (+25 €/TB/yr) | ||
Network
Fast interconnect (beween albedo's nodes):
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