Implantação do middleware globus toolkit 4 para aplicações em ambientes de grid

Abstract

Grid computing consists in a range of services, protocols and softwares which incorporate distributed computing resources in an unified environment. It is considered as a solution to the problem faced by organizations to process and store the increasing amount of data. The use of middlewares is necessary when a Grid environment is created. However the project of a middleware for Grid is not simple, because should be considered everything involving this large and geographically distributed environment: hardware, software, authentication, security, communication between the computational resources geographically distant, etc. Usually, when an user uses a Grid environment, he finds some difficulty to submit tasks, monitoring the execution and the generated files. So, the Grid middlewares are associated to Grid portals to help users. This work addresses the characteristics and components of Grid environments, presenting some existing tools and focusing on the Globus Toolkit 4.