Fairshare

Fairshare is a scheduling policy which provides fair distribution of computing resources to users and to their jobs. The calculation of fairshare is based on a usage of resources in last 30 days. The importance of the resource usage decreases according to passed time, that means jobs running recently get higher weight than jobs running several days ago.

Fairshare takes into account also publications with acknowledgement to MetaCentrum (only the publications you entered into the system Perun). A high number of publications results in higher fairshare for a user and higher priority for his jobs.

In May 2026, a separate fairshare was set up in the queue luna, independent of the global fairshare across all MetaCentrum computing resources. So only jobs submitted to the queue luna are taken into account.

To find out the start time of a waiting job adjusted by the batch system scheduler, use one of the following ways:

• set the qstat command (qstat -f JobID) and look up the items estimated.start_time and estimated.exec_vnode.
• go to https://my.metacentrum.cz/personal-view. Then click on the job you are interested in and look up the items estimated.start_time and estimated.exec_vnode.

The waiting jobs, for which the batch system scheduler has already allocated worker nodes, have stated a note in the comment line explaining why they are waiting, e.g. “Not Running: Insufficient amount of resource: queue_list”.