Load information sharing policies in communication-intensive parallel applications

One usage of Grid infrastructures is to perform parallel computing of scientific applications, most of the time related to hard sciences (physics, chemistry, biology). To exploit parallelism most of these applications are intensive communicated in data and synchronisation messages. On this context, grid systems have to take in account to not interfering with the normal execution of applications. Starting from this idea, in this article we present a study of information sharing policies used by load-balancing algorithms developed for the middleware ProActive, analyzing the performance scalability of. response time (time of reaction against instabilities) and bandwidth, from a communication-intensive application context. We divided the policies into: Centralized or Distributed oriented; and Eager or Lazy load information sharing. Our experimental results show that Eager Distributed oriented policies have better performance (response time and bandwidth usage).