Work on Co-scheduling Will be Presented at ICPP

FAST is going to present a paper at the 11th International Workshop on Scheduling and Resource Management for Parallel and Distributed Systems which is held in conjunction with International Conference on Parallel Processing (ICPP'15) in Beijing, China.

Title: Case Study on Co-Scheduling for HPC Applications

Authors: Jens Breitbart, Josef Weidendorfer, Carsten Trinitis

Abstract: Most applications running on supercomputers achieve only a fraction of the peak performance of the system. In this paper we analyze the performance and energy efficiency of co-scheduling one memory bandwidth bound and one compute bound application on the same node. We present autopin+, a tool designed to monitor and optimize co-scheduling of applications. Our analysis shows that co-scheduling can improve both energy efficiency and overall throughput of a supercomputer. At best, runtime can be decreased by 28% and the energy consumption by 12%, respectively, compared to best case dedicated execution. The overall efficiency however strongly depends on the ratio of jobs available in the queue. We furthermore present a simple adaptive strategy depending on the available jobs in the queue.