Grids computacionais: um estudo comparativo entre quatro tecnologias de middlewares para grids

Abstract

Grids Computing are infrastructures that support the execution of havely applications, integrating heterogeneous resources independently of their physical location. The grid applications supports big amount of data and computing resources shared throught organizational boundaries, where each one has a different access policy. That make the management of a grid plataform it be very complex. Middlewares for computacional grids provides transparent and uniformed access to the resources, hiding the heterogenity of a grid environment. There are several middlewares developed to facilitate to manage the grid plataform. This work will present four important middlewares: Globus, InteGrade, EasyGrid and Condor-G. It will also make a comparative study between them.