Identifying the optimal energy-efficient operating points of parallel workloads
Proceedings of the International Conference on Computer-Aided Design
Understanding the future of energy-performance trade-off via DVFS in HPC environments
Journal of Parallel and Distributed Computing
Pack & Cap: adaptive DVFS and thread packing under power caps
Proceedings of the 44th Annual IEEE/ACM International Symposium on Microarchitecture
Parallel job scheduling for power constrained HPC systems
Parallel Computing
| Hi-index | 0.00 |
Never-ending striving for performance has resulted in a tremendous increase in power consumption of HPC centers. Power budgeting has become very important from several reasons such as reliability, operating costs and limited power draw due to the existing infrastructure. In this paper we propose a power budget guided job scheduling policy that maximize overall job performance for a given power budget. We have shown that using DVFS under a power constraint performance can be significantly improved as it allows more jobs to run simultaneously leading to shorter wait times. Aggressiveness of frequency scaling applied to a job depends on instantaneous power consumption and on the job's predicted performance. Our policy has been evaluated for four workload traces from systems in production use with up to 4 008 processors. The results show that our policy achieves up to two times better performance compared to power budgeting without DVFS. Moreover it leads to 23% lower CPU energy consumption on average. Furthermore, we have investigated how much job performance and energy efficiency can be improved under our policy and same power budget by an increase in the number of DVFS enabled processors.