MDS '14Pub Date : 2014-12-08DOI: 10.1145/2684080.2684081
Maxime Colmant, Romain Rouvoy, L. Seinturier
{"title":"Improving the energy efficiency of software systems for multi-core architectures","authors":"Maxime Colmant, Romain Rouvoy, L. Seinturier","doi":"10.1145/2684080.2684081","DOIUrl":"https://doi.org/10.1145/2684080.2684081","url":null,"abstract":"The ICT has an huge impact on the world CO2 emissions and recent study estimates its account to 2% of these emissions. This growing account emissions makes IT energy efficiency an important challenge. State-of-the-art has proven that the processor is the main power consumer. Processor are nowadays more and more complex and they are used in many hardware systems, such as computers or smartphones. This thesis is thus focusing on the software energy efficiency for multi-core systems. In this paper, we therefore report our motivations to understand deeply their architectures for improving their energy efficiencies. Manufacturers have worked tremendously to improve performance and reduce power consumption of their processors. However a lot of things remains to do in the software side. We claim that energy-efficient softwares can play a deterministic role to reduce the IT carbon footprint. To answer this challenge, we are believing on the software-metric approach with a minimal hardware investment. For this purpose, an efficient, scalable and non-invasive tool is needed. As a result, we created PowerAPI, to provide fine-grained power estimations at process and code-level for optimizing the software enegergy efficiency automatically. This solution will help to identify clearly the energy leaks for optimizing automatically the power consumed by software.","PeriodicalId":155645,"journal":{"name":"MDS '14","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131200301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MDS '14Pub Date : 2014-12-08DOI: 10.1145/2684080.2684082
R. Gomes, F. Costa, R. Rocha, N. Georgantas
{"title":"A middleware-based approach for QoS-aware deployment of service choreography in the cloud","authors":"R. Gomes, F. Costa, R. Rocha, N. Georgantas","doi":"10.1145/2684080.2684082","DOIUrl":"https://doi.org/10.1145/2684080.2684082","url":null,"abstract":"Non-functional requirements specification for an application and definition of required resources for its deployment are activities commonly performed at ad hoc, which can cause quality of service degradation due to inefficient use of resources. This problem is even greater with applications formed by the composition of multiple services. Cloud computing emerges as an alternative to provision of the needed resources, which is usually done using local infrastructure in conjunction with external providers. However, efficient resource management mechanisms and policies for offering quality services in these environments are necessary. This work is a PhD proposal, where is presented a middleware-based approach for cloud resources management and their provisioning according with non-funcional requirements and with greater usability by the deployer. Use of models at run-time and choreography of services for higher abstraction, adaptability and decentralization of the running system is proposed. Using this approach applications running in cloud environments may work based on their immediate needs.","PeriodicalId":155645,"journal":{"name":"MDS '14","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134332006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}