By Walfredo Cirne, Narayan Desai, Eitan Frachtenberg, Uwe Schwiegelshohn
This booklet constitutes the completely refereed court cases of the sixteenth foreign Workshop on task Scheduling techniques for Parallel Processing, JSSPP 2012, which used to be held in Shanghai, China, in may well 2012. The 14 revised papers provided have been conscientiously reviewed and chosen from 24 submissions. The papers disguise the subsequent subject matters: parallel batch scheduling; workload research and modeling; source administration approach software program experiences; and internet scheduling.
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Sample text
3. Checkpoint/Restart abilities: The applications or the supercomputing center has checkpoint/restart (C/R) abilities, which can be initiated any time by the scheduler. 42 S. Niu et al. Note that the first two assumptions apply to most of classical backfilling algorithms too, allowing each job to be scheduled once and assigned an arbitrary subset of all the available nodes. In the context of our checkpoint-based backfilling scheduling, however, they allow an interrupted and checkpointed job to resume its execution with the same number of nodes without any placement constraints.
In this context, it can be proved that the average wait time and the average queue length are equivalent. Therefore, in our results discussion, we only report the job wait time.
Section 6 discusses related work, and finally, Section 7 suggests potential future work and concludes the paper. 40 2 S. Niu et al. Classical Backfilling Algorithm Overview In this section, we review the classical backfilling algorithm to set a stage for presenting our checkpoint-based approach. , a job is allocated the number of nodes it requested in its job script and uses this partition in a dedicated manner throughout its execution. The widely used FCFS-based backfill algorithm does the following: – maintain jobs in the order of their arrival in the job queue and schedule them in order if possible, – upon a job’s completion or arrival, dispatch jobs from the queue front and reserve resources for the first job in the queue that cannot be run due to insufficient resource available, – based on the user estimated wall times of the running jobs, calculate the backfill time window, and – traverse the job queue and schedule jobs that can fit into the backfill window, whose execution will not interfere with the advance reservation.