Grid computing intends to share heterogeneous resources in dynamic service-based environments. This kind of systems has the major advantages of enabling rapid composition of distributed applications. However, equilibrating the amount of work assigned to each of the nodes in a grid environment is a complex problem, even more than for other kinds of parallel systems. In this paper, we present a new extension and reinterpretation of one of the most successful models of awareness in Computer Supported Cooperative Work (CSCW), called the Spatial Model of Interaction (SMI), which manages awareness of interaction through a set of key concepts, to manage task delivery in collaborative distributed systems. This model, called AMBLE (Awareness Model for Balancing the Load in Collaborative Grid Environments), also applies some theoretical principles and theories of multi-agents systems to create a collaborative and cooperative environment that can be able to provide an autonomous, efficient and i...