Grids Challenged by a Web 2.0 and Multicore Sandwich

We discuss the application of Web 2.0 to support scientific research (e-Science) and related “e-moreorlessanything ” applications. Web 2.0 offers interesting technical approaches to build the core e-infrastructure (Cyberinfrastructure) as well as a host of interesting services exemplified by Facebook, YouTube, Amazon S3/EC2 and Google maps. We discuss why some of the original Grid goals of linking the world's computer systems may not be so relevant today and that interoperability is needed at the data and not always at the infrastructure level. Web 2.0 may also support Parallel Programming 2.0-- a better parallel computing software environment motivated by the need to run commodity applications on multicore chips. A “Grid on the chip ” will be a common use of future chips with tens or hundreds of cores. 1

Manual de ferramentas da web 2.0 para professores

Nos nove capítulos deste livro várias ferramentas da Web 2.0 são apresentadas, tendo como objectivo facilitar aos professores e educadores a sua inserção em contexto educativo. Deste modo, em cada capítulo é feita a contextualização de cada ferramenta, explica-se como criar um espaço online e aborda-se a sua utilização nas práticas educativas. A nossa ideia foi facilitar o acesso a várias ferramentas com potencialidades diversas como texto, imagem, vídeo, som, construção de sítios na Web, criação de um mashup, exploração de ambientes virtuais como o Second Life e o acesso à Web através das tecnologias móveis. Apresentamos também ferramentas que ajudam a representar o conhecimento através da construção de mapas conceptuais ou a montar vídeos seus ou dos seus alunos, que podem ser disponibilizados no YouTube. A Web 2.0 está a um clique, não perca esta oportunidade para si e para aqueles que prepara para a vida.Ministério da Educaçã

A Framework for Grid-Enabling Scientific Workflow Systems. Architecture and application case studies on interoperability and heterogeneity in support for Grid workflow automation.

Since the early 2000s, Service Oriented Architectures (SOAs) have played a key role in the development of complex applications within a virtual organization (VO) context. Grids and workflows have emerged as vital technologies for addressing the (SOA) paradigm. Given the variety of Grid middleware, scientific workflow systems and Grid workflows available, bringing the two technologies together in a flexible, reusable and generalized way has been largely overlooked, particularly from a scientific end user perspective. The lack of domain focus in this area has led to a slow uptake of Grid technologies. This thesis aims to design a framework for Grid-enabling workflows, which identifies the essential technological components, how these components fit together in layered architecture and the interactions between them. To produce such a framework, this thesis first investigates the definition of a Grid-workflow architecture and mapping Grid functionality to workflow nodes, focusing on striking a balance between performance, usability and the Grid functionality supported. Next, it presents an examination of framework extensions for supporting various forms of Grid heterogeneity, essential for ii VO based collaboration. Given the complex nature of Grid technologies, the work presented here investigates abstracting Grid based workflows through high-level definitions and resolution using semantic technologies. Finally, this thesis presents a way to resolves abstract Grid workflows using semantic technologies and intelligent, autonomous agents. The frameworks presented in this thesis are tested and evaluated within the context of domain-based case studies defined in the SIMDAT, BRIDGE and ARGUGRID EU funded research projects