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oapen-20.500.12657-491922021-11-23T13:59:07Z Chapter Globally Optimised Energy-Efficient Data Centres O'Sullivan, Barry Tsachouridis, Vassilios A. Rea, Susan Ignacio Torrens, J. Chen, Lydia Y. Vojtech Zavrel, V Pages, Enric Grimes, Diarmuid Townley, Jacinta Scherer, Thomas Lopez, Lara Pesch, Dirk Hensen, Jan Engbersen, Ton energy modelling, energy analysis, energy transparency, energy aware, software engineering bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNU Sustainability A great deal of energy in Information and Communication Technology (ICT) systems can be wasted by software, regardless of how energy-efficient the underlying hardware is. To avoid such waste, programmers need to understand the energy consumption of programs during the development process rather than waiting to measure energy after deployment. Such understanding is hindered by the large conceptual gap from hardware, where energy is consumed, to high-level languages and programming abstractions. The approaches described in this chapter involve two main topics: energy modelling and energy analysis. The purpose of modelling is to attribute energy values to programming constructs, whether at the level of machine instructions, intermediate code or source code. Energy analysis involves inferring the energy consumption of a program from the program semantics along with an energy model. Finally, the chapter discusses how energy analysis and modelling techniques can be incorporated in software engineering tools, including existing compilers, to assist the energy-aware programmer to optimise the energy consumption of code. 2021-06-02T10:09:04Z 2021-06-02T10:09:04Z 2017 chapter ONIX_20210602_10.5772/65988_306 https://library.oapen.org/handle/20.500.12657/49192 eng application/pdf n/a 53053.pdf InTechOpen 10.5772/65988 10.5772/65988 09f6769d-48ed-467d-b150-4cf2680656a1 FP7-SMARTCITIES-2013 608826 open access
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A great deal of energy in Information and Communication Technology (ICT) systems can be wasted by software, regardless of how energy-efficient the underlying hardware is. To avoid such waste, programmers need to understand the energy consumption of programs during the development process rather than waiting to measure energy after deployment. Such understanding is hindered by the large conceptual gap from hardware, where energy is consumed, to high-level languages and programming abstractions. The approaches described in this chapter involve two main topics: energy modelling and energy analysis. The purpose of modelling is to attribute energy values to programming constructs, whether at the level of machine instructions, intermediate code or source code. Energy analysis involves inferring the energy consumption of a program from the program semantics along with an energy model. Finally, the chapter discusses how energy analysis and modelling techniques can be incorporated in software engineering tools, including existing compilers, to assist the energy-aware programmer to optimise the energy consumption of code.
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