تقرير
Coordinated Management of Processor Configuration and Cache Partitioning to Optimize Energy under QoS Constraints
| العنوان: | Coordinated Management of Processor Configuration and Cache Partitioning to Optimize Energy under QoS Constraints |
|---|---|
| المؤلفون: | Nejat, Mehrzad, Manivannan, Madhavan, Pericas, Miquel, Stenstrom, Per |
| سنة النشر: | 2019 |
| المجموعة: | Computer Science |
| مصطلحات موضوعية: | Computer Science - Hardware Architecture |
| الوصف: | An effective way to improve energy efficiency is to throttle hardware resources to meet a certain performance target, specified as a QoS constraint, associated with all applications running on a multicore system. Prior art has proposed resource management (RM) frameworks in which the share of the last-level cache (LLC) assigned to each processor and the voltage-frequency (VF) setting for each processor is managed in a coordinated fashion to reduce energy. A drawback of such a scheme is that, while one core gives up LLC resources for another core, the performance drop must be compensated by a higher VF setting which leads to a quadratic increase in energy consumption. By allowing each core to be adapted to exploit instruction and memory-level parallelism (ILP/MLP), substantially higher energy savings are enabled. This paper proposes a coordinated RM for LLC partitioning, processor adaptation, and per-core VF scaling. A first contribution is a systematic study of the resource trade-offs enabled when trading between the three classes of resources in a coordinated fashion. A second contribution is a new RM framework that utilizes these trade-offs to save more energy. Finally, a challenge to accurately model the impact of resource throttling on performance is to predict the amount of MLP with high accuracy. To this end, the paper contributes with a mechanism that estimates the effect of MLP over different processor configurations and LLC allocations. Overall, we show that up to 18% of energy, and on average 10%, can be saved using the proposed scheme. Comment: Submitted to the 34th IEEE International Parallel & Distributed Processing Symposium (IPDPS2020) |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1911.05114 |
| رقم الأكسشن: | edsarx.1911.05114 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |