Energy Efficient Data Centers [[electronic resource] ] : Third International Workshop, E2DC 2014, Cambridge, UK, June 10, 2014, Revised Selected Papers / / edited by Sonja Klingert, Marta Chinnici, Milagros Rey Porto

• Record Nr.: UNISA996198863603316
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2015
• ISBN: 3-319-15786-8
• Edizione: [1st ed. 2015.]
• Descrizione fisica: 1 online resource (XII, 167 p. 85 illus.)
• Collana: Computer Communication Networks and Telecommunications ; ; 8945
• Disciplina: 004.0286
• Soggetti: Database management; Computer system failures; Computer communication systems; Computers and civilization; Management information systems; Computer science; Computer simulation; Database Management; System Performance and Evaluation; Computer Communication Networks; Computers and Society; Management of Computing and Information Systems; Simulation and Modeling
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Intro -- Preface -- Organization -- Contents -- Energy Optimization Algorithms and Models -- Agile Traffic Merging for DCNs -- 1 Introduction -- 1.1 Our Approach: Merging -- 1.2 Contributions and Paper Organization -- 2 Minimizing Energy Consumption -- 2.1 Optimization Model -- 2.2 Energy Savings Due to Traffic Merging -- 3 Greedy Flow Assignment -- 3.1 Algorithm -- 3.2 Validation of Greedy Algorithm -- 4 Simulation Results -- 4.1 Synthetic Traffic Data -- 4.2 ; Empirical Traffic Data -- 5 Related Work -- 6 Conclusions -- References -- Performance and Energy Efficiency of Parallel Processing in Data Center Environments -- Abstract -- 1 Introduction -- 2 Multi-processor Job Execution -- 2.1 Multi-processor Queuing Model -- 2.2 Task Graph Job Model -- 2.3 Generic Task Execution Model -- 2.4 Performance of the Principal Task Graph Elements -- 3 Task Graph Reductions -- 3.1 General Aspects and Application Cases -- 3.2 Example of a Task Graph Reduction -- 4 Performance Evaluation and Energy Efficiency -- 4.1 Performance Evaluation -- 4.2 Energy Efficiency -- 4.3 Trade-off Between the Operation Modes PP and SP -- 5 Conclusions -- References -- Cyclic Blackout Mitigation Through HVAC Shifted Queue Optimization -- Abstract -- 1 Introduction -- 2 The Proposed System -- 2.1 System Structure -- 2.2 System Operation -- 2.3 Shifted Queue Optimization -- 3 Implementation -- 3.1 Application -- 3.2 System Simulation -- 4 Results and Discussion -- 5 Conclusions -- Acknowledgement -- References -- Stochastic Petri Net Models for the Analysis of Trade-Offs in Data Centres with Power Management -- 1 Introduction -- 2 Single Server Model -- 2.1 Basic Model -- 2.2 Single Server Stochastic Petri Net Model -- 2.3 Power-Performance Trade-Off -- 2.4 Results -- 3 Multiple-Server Model -- 3.1 Stochastic Petri Net Model -- 3.2 Power-Performance Trade-Off -- 3.3 Results.; 4 Computational Cost and Scalability -- 5 Related Work -- 6 Discussion and Conclusion -- References -- The Future Role of Data Centres in Europe -- GEYSER: Enabling Green Data Centres in Smart Cities -- Abstract -- 1 Introduction -- 2 GEYSER Visionary Scenarios -- 3 GEYSER System Design -- 3.1 General Architecture -- 3.2 Semantically Enhanced GEYSER Data Model -- 4 GEYSER Simulation Environment -- 4.1 Modelling -- 4.2 Simulation Methods -- 5 Conclusions -- References -- Analysis of the Influence of Application Deployment on Energy Consumption -- 1 Introduction -- 2 The ECO2Clouds Project and the Eels Application -- 2.1 ECO2Clouds -- 2.2 The Case Study -- 3 Different Deployment Configurations and Models -- 3.1 Application Deployment Configurations -- 3.2 The Models Implemented -- 4 Power Model -- 5 Validation -- 6 Deployment Configuration Analysis -- 7 Conclusions and Future Work -- References -- Minimization of Costs and Energy Consumption in a Data Center by a Workload-Based Capacity Management -- 1 Introduction -- 2 Data Center Model -- 2.1 Modeling Workloads -- 2.2 Modeling Applications -- 2.3 Modeling Servers -- 2.4 Cooling Models -- 2.5 Assessment of Data Center Efficiency, Performance, and Costs -- 3 Analysis of Workloads -- 3.1 Simulation of Diverse Workloads Using DCworms -- 3.2 Identifying Power Caps -- 4 Optimizing Capacity Using Power Capping Methods -- 4.1 Power Capping Methods -- 4.2 Simulation Experiments -- 4.3 Simulation Results -- 4.4 Application to Demand-Response Management -- 5 Conclusions -- References -- Building Application Profiles to Allow a Better Usage of the Renewable Energies in Data Centres -- 1 Introduction -- 2 Related Work -- 3 Design -- 3.1 Plug4Green -- 3.2 Energy Aware Software Controller -- 3.3 Optimization -- 4 Implementation -- 5 Conclusion -- References -- Energy Efficiency Metrics for Data Centres.; Review on Performance Metrics for Energy Efficiency in Data Center: The Role of Thermal Management -- Abstract -- 1 Introduction -- 2 A Review of Data Center Energy Efficiency Metrics -- 2.1 Thermal Metrics -- 2.2 Component Efficiency Metrics -- 2.3 Power and Energy Consumption Metrics -- 3 Relations Among Thermal, Component Efficiency and Power/Energy Metrics -- 3.1 The Effect of Thermal Performance on Data Center Energy Consumption -- 3.2 Mutual ; Relation Among Thermal and Energy Consumption Metrics -- 3.3 Energy Efficiency Management Trough Thermal Performance Awareness -- 4 Conclusions -- Acknowledgments -- References -- Gain More from PUE: Assessing Data Center Infrastructure Power Adaptability -- 1 Introduction -- 2 Related Work -- 3 Conception of IPA @ PVar -- 3.1 Power Variability -- 3.2 Infrastructure Power Adaptability -- 4 Integration in LDEE Metric -- 4.1 Load Dependent Energy Efficiency -- 4.2 Proxy for Infrastructure Power Models -- 5 Evaluation -- 5.1 PUE Scalability -- 5.2 Extremes of IT/Infrastructure Dependency -- 5.3 Realistic Data Center Operation -- 5.4 Proxy for Power Models -- 6 Conclusion -- References -- Author Index.
• Sommario/riassunto: This book constitutes the thoroughly refereed post-conference proceedings of the Third International Workshop on Energy Efficient Data Centers, E2DC 2014, held in Cambridge, UK, in June 2014. The 10 revised full papers presented were carefully selected from numerous submissions. They are organized in three topical sections named: energy optimization algorithms and models, the future role of data centres in Europe and energy efficiency metrics for data centres.

Genetic Programming : 7th European Conference, EuroGP 2004, Coimbra, Portugal, April 5-7, 2004, Proceedings / / edited by Maarten Keijzer, Una-May O'Reilly, Simon M. Lucas, Ernesto Costa, Terence Soule

• Record Nr.: UNINA9910144204203321
• Pubbl/distr/stampa: Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2004
• ISBN: 1-280-30721-8; 9786610307210; 3-540-24650-9
• Edizione: [1st ed. 2004.]
• Descrizione fisica: 1 online resource (XI, 412 p.)
• Collana: Lecture Notes in Computer Science, , 0302-9743 ; ; 3003
• Disciplina: 006.3/1
• Soggetti: Artificial intelligence; Computers; Computer programming; Algorithms; Artificial Intelligence; Computation by Abstract Devices; Programming Techniques; Algorithm Analysis and Problem Complexity
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Bibliographic Level Mode of Issuance: Monograph
• Nota di bibliografia: Incudes bibliographical references at the end of each chapters and index.
• Nota di contenuto: Papers -- Evaluation of Chess Position by Modular Neural Network Generated by Genetic Algorithm -- Coevolution of Algorithms and Deterministic Solution of Equations in Free Groups -- Designing Optimal Combinational Digital Circuits Using a Multiple Logic Unit Processor -- A Data Structure for Improved GP Analysis via Efficient Computation and Visualisation of Population Measures -- Boosting Technique for Combining Cellular GP Classifiers -- Co-evolving Faults to Improve the Fault Tolerance of Sorting Networks -- Toward an Alternative Comparison between Different Genetic Programming Systems -- Lymphoma Cancer Classification Using Genetic Programming with SNR Features -- A Practical Approach to Evolving Concurrent Programs -- Evolutionary Induction of Grammar Systems for Multi-agent Cooperation -- Genetic Programming Applied to Mixed Integer Programming -- Efficient Crossover in the GAuGE System -- Grammatical Evolution by Grammatical Evolution: The Evolution of Grammar and Genetic Code -- Constrained Molecular Dynamics as a Search and Optimization Tool -- On the Performance of Genetic Operators and the Random Key Representation -- Analysis of GP Improvement Techniques over the Real-World Inverse Problem of Ocean Color -- Evolution and Acquisition of Modules in Cartesian Genetic Programming -- How to Choose Appropriate Function Sets for Gentic Programming -- Improving Grammar-Based Evolutionary Algorithms via Attributed Derivation Trees -- Posters -- Evolved Matrix Operations for Post-processing Protein Secondary Structure Predictions -- Genetic Programming for Natural Language Parsing -- Comparing Hybrid Systems to Design and Optimize Artificial Neural Networks -- An Evolutionary Algorithm for the Input-Output Block Assignment Problem -- Genetic Programming for Subjective Fitness Function Identification -- Saving Effort in Parallel GP by Means of Plagues -- Sampling of Unique Structures and Behaviours in Genetic Programming -- The Evolution of Concurrent Control Software Using Genetic Programming -- Extending Grammatical Evolution to Evolve Digital Surfaces with Genr8 -- Evolving Text Classifiers with Genetic Programming -- Automatic Synthesis of Instruction Decode Logic by Genetic Programming -- Alternatives in Subtree Caching for Genetic Programming -- Structural Risk Minimization on Decision Trees Using an Evolutionary Multiobjective Optimization -- Global Distributed Evolution of L-Systems Fractals -- Reusing Code in Genetic Programming -- Exploiting Reflection in Object Oriented Genetic Programming -- Evolutionary Feature Construction Using Information Gain and Gini Index -- On the Evolution of Evolutionary Algorithms -- Genetic Programming with Gradient Descent Search for Multiclass Object Classification.
• Sommario/riassunto: In this volume we present the accepted contributions for the 7th European C- ference on Genetic Programming (EuroGP 2004). The conference took place on 5–7 April 2004 in Portugal at the University of Coimbra, in the Department of Mathematics in Pra¸ ca Dom Dinis, located on the hill above the old town. EuroGP is a well-established conference and the sole one exclusively de- ted to Genetic Programming. Previous proceedings have all been published by ; Springer-Verlag in the LNCS series. EuroGP began as an international wor- hop in Paris, France in 1998 (14–15 April, LNCS 1391). Subsequently the wor- hop was held in G¨ oteborg, Sweden in 1999 (26–27 May, LNCS 1598) and then EuroGP became an annual conference: in 2000 in Edinburgh, UK (15–16 April, LNCS 1802), in 2001 at Lake Como, Italy (18–19 April, LNCS 2038), in 2002 in Kinsale, Ireland (3–5 April, LNCS 2278), and in 2003 in Colchester, UK (14–16 April, LNCS 2610). From the outset, there have always been specialized wor- hops, co-located with EuroGP, focusing on applications of evolutionary al- rithms (LNCS 1468, 1596, 1803, 2037, 2279, and 2611). This year the EvoCOP workshop on combinatorial optimization transformed itself into a conference in its own right, and the two conferences, together with the EvoWorkshops, EvoBIO, EvoIASP, EvoMUSART, EvoSTOC, EvoHOT, and EvoCOMNET, now form one of the largest events dedicated to Evolutionary Computation in Europe.