Difference between revisions of "SLURM Workload Manager"
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== Reservation == | == Reservation == | ||
e.g. for specific courses, it can be mandatory to keep some resources free for a specific time span. <br/> | |||
=== Setting up a reservation === | |||
scontrol create reservation reservationname=moleco partition=mpcb.p nodecnt=5 account=kurskonto start=2019-03-01T08:00 duration=12:00:00 flags=DAILY | scontrol create reservation reservationname=moleco partition=mpcb.p nodecnt=5 account=kurskonto start=2019-03-01T08:00 duration=12:00:00 flags=DAILY | ||
| Line 24: | Line 27: | ||
In this example, the reservation has to be cancelled manually. | In this example, the reservation has to be cancelled manually. | ||
Alternatively, we could set a value for EndTime, but in that case the reservation would be kept up at night, since the option ''duration'' collides with ''EndTime''. | Alternatively, we could set a value for EndTime, but in that case the reservation would be kept up at night, since the option ''duration'' collides with ''EndTime''. | ||
=== Working on existing reservations === | |||
To get an overview of the existing reservations, type in | |||
scontrol show reservation | |||
To update the values for an existing reservation, type in | |||
scontrol update reservation <option=value> | |||
Latest revision as of 12:07, 21 February 2019
Slurm is an open source cluster management and job scheduling system. With Slurm we can send, queue, modify, and inspect jobs and also have the possibility to manage our resources, e.g. creating a reservations for a specific time range.
Reservation
e.g. for specific courses, it can be mandatory to keep some resources free for a specific time span.
Setting up a reservation
scontrol create reservation reservationname=moleco partition=mpcb.p nodecnt=5 account=kurskonto start=2019-03-01T08:00 duration=12:00:00 flags=DAILY
In this example, we set the following options:
- reservationname=moleco
- The reservation needs a name so that the users can send their jobs to the corresponding reserved nodes.
- partition=mpcb.p
- We need to set a partition, ideally one that is not working on full capacity.
- nodecnt=5
- Identify number of nodes to be reserved.
- account=kurskonto
- Only the specified account/group will be able to use the reserved resources.
- start=2019-03-01T08:00
- Set the date and time to start the reservation.
- duration=12:00:00
- For this course, the reservation will only be effective on daytime, 08:00 AM + 12h.
- flags=DAILY
- The reservation will be active on a daily basis.
In this example, the reservation has to be cancelled manually. Alternatively, we could set a value for EndTime, but in that case the reservation would be kept up at night, since the option duration collides with EndTime.
Working on existing reservations
To get an overview of the existing reservations, type in
scontrol show reservation
To update the values for an existing reservation, type in
scontrol update reservation <option=value>
