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A job on 48 cores on partition large96:shared (96 cores per node, 144 core hour) has a reservation for num = 48/96 = 0.5 nodes. Assuming a wallclock time of 3 hours yields a job charge of 216 core hour. |
CPUh and NPL relation
Depends on the core/node type and the number of physical cores used per node:
14 NPL ≡ 1 standard96-node x 1 hour (our definition, see table above)
≙ 96 standard-cpu (if all cores are used) x 1 hour
= 96 standard-cpuh
→
1 NPL ~ 6.857 standard-cpuh
1 NPL ~ 6.857 cpuh (standard96)
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Accounts for core hour
Running batch jobs with a user account, the user can access different NPL accounts in general. HLRN distinguishes The NHR centers distinguish between
- personal accounts and
- project accounts
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In the HLRN each user account is attached to a personal NPL account. Both accounts, the user account and the personal account, share the same name but their purpose is different. The user account is the account on the Linux operation system and is used to control e.g. permissions to data files. The personal account is a bank account containing NPLcore hour.
At the beginning of each quarter the personal account is granted by 10000 NPL 75000 core hour during the lifetime of the user account. In reasonable and exceptional cases, the grant of the personal account can be extended to 40000 NPL 300 k core hour per quarter. For that please contact your consultant. At the end of each quarter all remaining NPL core hour in the personal account are dropped.
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