A methodology for full-system power modeling in heterogeneous data centers

The need for energy-awareness in current data centers has encouraged the use of power modeling to estimate their power consumption. However, existing models present noticeable limitations, which make them application-dependent, platform-dependent, inaccurate, or computationally complex. In this paper, we propose a platform-and application-agnostic methodology for full-system power modeling in heterogeneous data centers that overcomes those limitations. It derives a single model per platform, which works with high accuracy for heterogeneous applications with different patterns of resource usage and energy consumption, by systematically selecting a minimum set of resource usage indicators and extracting complex relations among them that capture the impact on energy consumption of all the resources in the system. We demonstrate our methodology by generating power models for heterogeneous platforms with very different power consumption profiles. Our validation experiments with real Cloud applications show that such models provide high accuracy (around 5% of average estimation error).This work is supported by the Spanish Ministry of Economy and Competitiveness under contract TIN2015-65316-P, by the Gener- alitat de Catalunya under contract 2014-SGR-1051, and by the European Commission under FP7-SMARTCITIES-2013 contract 608679 (RenewIT) and FP7-ICT-2013-10 contracts 610874 (AS- CETiC) and 610456 (EuroServer).Peer ReviewedPostprint (author's final draft

Re-building it green

Community development ; Environmental protection

Green IT, China – France: similar reactions?

Based upon a study carried out both in France and in China, this communication aims to answer the following question: Is it useful to invest in Green IT for Universities? This research provides information on the perception of individuals with respect to the label "green" placed on an IT object and also highlights the need to take into account the affective dimension of attitude in the Technology Acceptance Model. Our results may help in investment decisions regarding "green" technologyTechnology Acceptance Model, Green IT, intercultural study

Green IT and Green Software

Software and IT usage are continuously growing to keep our society active and manage our individual lives. But as they grow, their energy demand is exploding. By 2030, data centers alone will already consume some 10% of the global electricity.1 Including the Internet, telecommunications, and embedded devices, the energy consumption will be one-third of the global demand. Understanding that end users only consume what we offer, it is the community of software developers who must become active in ecologic behaviors. Green IT is the call of today. Each single line of code that we develop today may still be running years from now on zillions of processors, eating energy and contributing to global climate change

Green IT at IT-Dienstleistungszentrum Berlin

Das IT-Dienstleistungszentrum (ITDZ) Berlin ist eine Anstalt des öffentlichen Rechts (AöR) und der zentrale IT-Dienstleister für die Berliner Verwaltung. Es unterstützt die öffentlichen Institutionen des Landes Berlin mit moderner Informations- und Kommunikationstechnik (IKT) und stellt hierfür umfassende IT-Dienstleistungen bereit

Difficulties being green? Investigating Green IT in IT consultant companies

This study focuses on the topic of Green IT in the IT consultant industry. Green IT is currently a hot topic but while awareness and established policies has increased in the last years, studies show that few companies are actually following their procedures or have goals or ways of measuring the effects of their green initiatives. The research area of Green IT is limited in terms of empirically founded literature focusing on being green within specific industries, such as consultant companies. This study is a further contribution to this area. We investigated the reasons for poor enforcement and evaluation of Green IT initiatives and measured the maturity of the concept within the organisations using a Green IT Capability Maturity Model. The study used a qualitative approach including in-depth interviews with seven IT consultant companies in Sweden. Results indicated that poor enforcement and evaluation could be explained to some extent by difficulties such as measurement, lack of proper technology and Green IT projects wrongfully placed within the organisations. Other common reasons were the financial crisis and Green IT being such a recent phenomenon. The results also show an average maturity across levels in the Green IT Capability Maturity Model of 71, 4 percent

Green IT (includes High Powered Computing) - background reading

Background reading for coursework to prepare a technical report as part of the orientation phase. These items are business documents (i.e. grey literature) which might be read as a prelude or complement to finding information in peer reviewed academic publications. grey literature links and articles to be used in preparation of technical report. See also overview guidance document for this assignment http://www.edshare.soton.ac.uk/8017