Uso de conceitos arquiteturais para aumento da expressividade na modelagem de workflows cientificos

• Autor(a) principal: Medeiros, Vivian
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações do LNCC
• Texto Completo: https://tede.lncc.br/handle/tede/163
• topic: Arquitetura de software; Simulação (Computadores); Computer simulation; CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::SISTEMAS DE COMPUTACAO::ARQUITETURA DE SISTEMAS DE COMPUTACAO

In-silico experiments frequently take the form of workflows since they involve the execution of sets of interdependent tasks.The automation of these workflows through Scientific Workflow Management Systems (SWMSes) has been the subject of several papers in the area of e-Science.Traditionally, SWMSes provide fundamental automation mechanisms such as task dispatching and data movement, but recent studies have also shown interest in supporting non-functional attributes such as reliability and traceability in these systems.Nevertheless, the configuration of these attributes in current practice is limited in several aspects, particularly with respect to the interactions between tasks.Such characteristic leads to limited expressiveness in the workflow modeling languages provided by these systems. Aiming at improving such expressiveness, this work presents a proposal called Open Scientific Connectors (OSC), which adopts architectural concepts for the representation of interactions between tasks as first-class modeling elements. This approach provides better composition and reuse in workflow modeling, particularly in the configuration of mechanisms that deal with non-functional attributes. The proposal is evaluated through proofs of concept , in which the expressiveness, the reusability, the compositionality and the simplicity of OSC is compared with related work. A prototype of SWMS based on OSC also illustrates the feasibility of workflow models described in this language.