Effectiveness of the Oversubscribing Scheduling on Supercomputer Systems

High responsiveness is substantial for users’ satisfaction in supercomputer systems. Recently, the use of interactive jobs in addition to traditional batch jobs is attracting attention. It is getting important to handle those jobs consolidated for responsive systems. Here we show oversubscribing scheduling, in which multiple HPC jobs share computational resources, can effectively process jobs. This paper builds the job scheduling simulator considering oversubscribing and evaluates the oversubscribing system using actual supercomputer workload trace data. While keeping the short users’ response time, our solution achieves some strengths not found in a conventional solution; benefits on normal jobs, alleviating the slowdown, and the unnecessariness of the effort of good system configuration.