ISC'14

June 22–26, 2014
Leipzig, Germany

Presentation Details

 
Name: A Case Study of Energy Aware Scheduling on SuperMUC
 
Time: Thursday, June 26, 2014
10:00 am - 10:30 am
 
Room:   Hall 5
CCL - Congress Center Leipzig
 
Breaks:10:30 am - 11:00 am Coffee Break
07:30 am - 10:30 am Welcome Coffee
 
Speaker:   Axel Auweter, LRZ
  Luigi Brochard, IBM
 
Abstract:   In this paper, we analyze the functionalities for energy-aware scheduling of the IBM LoadLeveler resource management system on SuperMUC, one of the world's fastest HPC systems. We explain how LoadLeveler predicts execution times and the average power consumption of the system's workloads at varying CPU frequencies and compare the prediction to real measurements conducted on various benchmarks. Since the prediction model proves to be accurate for our application workloads, we can analyze the LoadLeveler predictions for a large fraction of the SuperMUC application portfolio. This enables us to define a policy for energy-aware scheduling on SuperMUC, which selects the CPU frequencies considering the applications' power and performance characteristics thereby providing an optimized tradeoff between energy savings and execution time.

Authors
Axel Auweter, LRZ; Arndt Bode, LRZ; Matthias Brehm, LRZ; Luigi Brochard, IBM System & Technology Group; Nicolay Hammer, LRZ; Herbert Huber, LRZ; Raj Panda, IBM System & Technology Group; Francois Thomas, IBM System & Technology Group; Torsten Wilde, LRZ