Title: Simple algorithms for selecting an energy-efficient server in a cluster of servers

Authors: Dilawaer Duolikun; Hiroki Kataoka; Tomoya Enokido; Makoto Takizawa

Addresses: Department of Advanced Sciences, Hosei University, Tokyo, Japan ' NTT Facilities, Osaka, Japan ' Faculty of Business Administration, Rissho University, Tokyo, Japan ' Department of Advanced Sciences, Hosei University, Tokyo, Japan

Abstract: Electric energy consumed by computers, especially servers in scalable clusters has to be reduced to realise eco society. In this paper, we first propose a multi-level power consumption (MLPCM) model which gives how much electric power a server consumes to perform application processes. We also propose an multi-level computation (MLCM) model which shows the expected execution time of an application process performed on a server. By using the MLPCM and MLCM models, we propose a pair of simple locally energy-aware (SLEA) and simple globally energy-aware (SGEA) algorithms to select a host server to perform an application process issued by a client. In the SLEA algorithm, a host server is selected, which is expected to consume the minimum electric energy to perform the process. In the SGEA algorithm, a host server is selected, where the total expected electric energy consumption of not only the host server but also the other servers is minimum. In the evaluation, we show the total electric energy consumption and active time of servers and the average execution time of processes can be reduced in the SGEA algorithm compared with other algorithms.

Keywords: energy-efficient computation; power consumption model; simple locally energy-aware; SLEA; simple globally energy-aware algorithms; SGEA algorithms.

DOI: 10.1504/IJCNDS.2018.093383

International Journal of Communication Networks and Distributed Systems, 2018 Vol.21 No.1, pp.1 - 25

Received: 25 Jul 2017
Accepted: 26 Jul 2017
Published online: 25 Jul 2018 *

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