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Power-performance efficiency of asymmetric multiprocessors for multi-threaded scientific applications

10 years 7 months ago
Power-performance efficiency of asymmetric multiprocessors for multi-threaded scientific applications
Recently, under a fixed power budget, asymmetric multiprocessors (AMP) have been proposed to improve the performance of multi-threaded applications compared to symmetric multiprocessors. An AMP is a multiprocessor system in which its processors are not operating at the same frequency. Power consumption has become an important design constraint in servers and high-performance server clusters. This paper explores the power-performance efficiency of Hyper-Threaded (HT) AMP servers, and proposes a new scheduling algorithm that can be used to reduce the overall power consumption of a server while maintaining a high level of performance. Prototyping AMPs on a commercial 4-way SMP server, we show that on average 15.6% energy savings and 6.1% slowdown for the HT-disabled case, and 7.1% energy savings and 4.8% slowdown for the HTenabled case can be achieved across NAS and SPEC OpenMP applications.
Ryan E. Grant, Ahmad Afsahi
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where IPPS
Authors Ryan E. Grant, Ahmad Afsahi
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