Extending Clustersim with Mp and Dsm Modules

In this paper, we present a new version of ClusterSim (Cluster Simulation Tool), in which we included two new modules: Message-Passing (MP) and Distributed Shared Memory (DSM). ClusterSim supports the visual modeling and the simulation of clusters and their workloads for performance analysis. A modeled cluster is composed of single or multi-processed nodes, parallel job schedulers, network topologies, message-passing communications, distributed shared memory and technologies. A modeled workload is represented by users that submit jobs composed of tasks described by probability distributions and their internal structure (CPU, I/O, DSM and MPI instructions). Our main objectives in this paper are: to present a new version of ClusterSim with the inclusion of Message-Passing and Distributed Shared Memory simulation modules; to present the new software architecture and simulation model; to verify the proposal and implementation of MPI collective communication functions using different communication patterns (Message-Passing Module); to verify the proposal and implementation of DSM operations, consistency models and coherence protocols for object sharing (Distributed Shared Memory Module); to analyze ClusterSim v.1.1 by means of two case studies. Our main contributions are the inclusion of the Message-Passing and Distributed Shared Memory simulation modules, a more detailed simulation model of ClusterSim and new features in the graphical environment.