SimGrid: A simulator of network monitoring topologies for peer-to-peer based computational grids

A crucial problem in distributed systems is the probability of failure occurrence in resources. Recent studies have been searching different ways for improving the execution time of applications and enhancing fault-tolerant mechanisms. In many cases testing is performed using simulated environments. This work presents the implementation of a simulator for computational grids prone to resource failures. The presented simulator allows the evaluation of different topologies for monitoring services on the grid including job scheduling, automatic failure detection, messages sending and efficient application recovery.