7th-9th March 2010, Poiana Brasov, Romania.


The COST 804 training school aims at presenting to European early stage researchers (as defined under COST rules, less than PhD+ 8 years experience) a comprehensive multidisciplinary state of the art relevant to the field of energy efficiency in distributed networks. It also aims at enabling the networking of these researchers amongst themselves and with the COST 804 community.

The participants got an overview of the field represented by the COST 804 Action, and detailed knowledge supplementing their focussed research topics. The training school's scope is to address energy efficiency in design, modelling and operations, starting from the hardware/software level, to the functional level, to operations and adaptation, and finally to adoption of the proposed measures, in a wide diversity of networks with associated facilities. The main approaches are highlighted with the state of the art in research and industry, and the performance / QoS / cost trade-offs.

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Methods for efficient consumption of energy in IT infrastructure

Dr. Andrei VLAD, IBM Romania

Abstract: This subject could include: 1. Design and infrastructure management for IT systems; 2. Design methodology - hardware aspects - of complex computer systems: hybrid technologies, virtualization, monitoring, provisioning, back-up and retrieve processing, self-management and healing 3.Cloud systems

Slides are here.

Thermal emissions in electronic systems

Dr Werner Escher, IBM Research Zürich

Abstract: Tutorial on thermal emissions and management in electronic systems.

Slides are here.

Direct Waste Heat Utilization from Liquid-Cooled Supercomputers

Dr. Werner ESCHER, IBM Research Zürich

Abstract: Chip micro scale liquid-cooling reduces conductive and convective resistance thereby improving the efficiency of datacenters by allowing coolant temperatures above the free cooling limit in all climates. This eliminates the need for chillers and allows the thermal energy to be re-used in cold climates. Replacing the combustion processes for secondary users with recycled heat from the datacenter effectively eliminates carbon dioxide emission during the winter season and reduces operating cost throughout the year. Hot water cooled datacenters reduce the effective energy cost by almost a factor of two compared to a current datacenter and reduce the carbon footprint by an even larger factor. Our energy re-use concept has been demonstrated in terms of cost and energy savings in a 60°C liquid cooled supercomputer. Additional alternative energy re-use schemes in hot climates for desalination and adsorption cooling allow close to full use of datacenter heat in all climates and all seasons. Output temperatures for these applications compared to space heating need to be 10-20°C higher which becomes possible through hotspot adapted cooling that eliminates mixing of fluids with different temperatures. In addition, interlayer cooled chip stacks allow double sided hotspot optimized cooling even closer to the heat source with low flow rates and low pumping power. That improves the large efficiency gain that becomes possible through 3D chip stacking.

Slides are here.

Energy efficiency in Computer grids

Anne-Cécile ORGERIE, ENS de Lyon, France

Abstract: While an extensive set of research projects deal with the issue of power-saving for battery- based electronic devices, few have an interest in permanently-plugged Large-Scale Distributed Systems (LSDS). However, a rapid study shows that each computer consumes a substantial quantity of power, especially when it is idle. After presenting the different techniques available to save energy in computing Grids, will be presented EARI (Energy-Aware Reservation Infrastructure), which manages the nodes and uses an on/off algorithm involving usage prediction and reservation aggregation.

Slides are here.

Framework for Green ITC technologies

Prof Louis-Francois PAU, Copenhagen Business School and Rotterdam school of management

Abstract: Backgrounders on Green ITC technologies, environmental regulations, and emissions profiles from devices and activities. Approaches and processes to reduce energy consumption and emissions from information, computing and telecommunications systems and applications at design and usage levels, Building regulations impact as receptacles of ITC systems.

Slides are here.

Energy efficiency in wired communications networks

Anne-Cécile ORGERIE, ENS de Lyon, France

Abstract: In wired communications, the energy issue has been explored since only less than 10 years. This lecture will focus on a state of the art presenting the techniques used in wired networks to save energy: hardware optimizations, on/off techniques, rate adaptation, network-wide solutions. Secondly, the Hermes framework, dedicated to energy-efficient scheduled large data transfers in Grids, Clouds and Network overlays, will be presented.

Slides are here.

Energy and Information an Holistic Approach about computers and power networks

Prof. Paul Nicolae Borza, Transilvania University Brasov, and Dr. Mihai Sanduleac, ECRO, Romania

Abstract: The intelligent grids also called "Smart Grids" are becoming increasingly widespread and it shows similar structural features with information systems. Not only the structural shapes are similar but also the functionalities present similitude. Is becoming increasingly clear that the two networks need to be increasingly deeper interconnected. The increase in efficiency of large scale distributed computation systems have to be related also with the improvement of the overall power grids efficiency and have to consider the new mechanisms where kWh reduction is exchanged with CO2 and/or Euro per kWh reduction, through a holistic approach of information and energy use. Several examples starting from structural similitude to functionalities and description methodologies will be illustrated by significant examples.

Slides are here.

Trade-off and selection methodologies including business and user behaviors

Prof Louis-Francois PAU, Copenhagen Business School and Rotterdam school of management

Abstract: Case presentation of a simplified version of proprietary tool for energy efficiency and emissions in wireless public networks taking service demand into account. The presentation will be of a simplified version of unique industrial tool whereby mobile network operators design 3G/LTE wireless networks for best energy efficiency, and run these operations with minimal on-going energy consumption .It serves as a live illustration of trade-offs in an industrial setting. The full tool cannot be demonstrated as it involves heavy computations and a high performance computing environment.

Slides are here.


It is available here.

Information Pointers

Green/Sustainable Information Technology & Communications (Green ITC) information pointers are available here.