@conference {Gianni201031, title = {A methodology to predict the performance of distributed simulations}, booktitle = {Proceedings - Workshop on Principles of Advanced and Distributed Simulation, PADS}, year = {2010}, note = {cited By 5}, pages = {31-39}, abstract = {Predicting the time-performance of a Distributed Simulation (DS) system may be of interest to evaluate system alternatives during the development cycle, before the system is implemented. In this paper, we introduce a methodology to predict the execution time of a DS system during its design phase. The methodology is based on a model-building approach that, basing on the design documents of the DS system, first produces its performance model and then evaluates it. The model includes components such as middleware to use (e.g., the HLA RTI), the set of DS execution hosts and the set of host interconnection networks. The methodology is applied to determine whether or not producing the distributed simulator of a given system may be advantageous in terms of execution time with respect to a conventional local simulator. An example use of the methodology is presented and validated by a comparison of the time-prediction with the actual execution time of the implemented DS system. {\textcopyright} 2010 IEEE.}, keywords = {Building performance, Computer simulation, Design documents, Design phase, Development cycle, Distributed simulations, Execution time, Forecasting, Middleware, Model buildings, Performance Model, Simulation model}, isbn = {9781424472918}, doi = {10.1109/PADS.2010.5471669}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954092922\&partnerID=40\&md5=2d68a6f0b45ad790df832f3da1a2ad43}, author = {Gianni, D. and Iazeolla, G. and Andrea D{\textquoteright}Ambrogio} } @conference {D{\textquoteright}Ambrogio2007210, title = {Software technologies for the interoperability and reusability of distributed simulators}, booktitle = {SISO European Simulation Interoperability Workshop 2007, EURO SIW 2007}, year = {2007}, note = {cited By 2}, pages = {210-219}, abstract = {Giving interoperability and reusability capabilities to distributed simulators is fundamental to the widespread use of distributed simulation. The HLA standard has introduced considerable improvements with respect to previous standards, though it suffers from shortcomings such as (1) lack of interoperability among different IEEE-compliant implementations, (2) no support to the adaptation and integration of individual federates and (3) poor reusability, which is limited to entire federates only. In this paper, we present two independent technologies that overcome such shortcomings. The first technology consists of a CORBA-HLA architecture that overcomes limitation (1), the second technology is a new development framework called SimJ that overcomes limitations (2) and (3). The CORBA-HLA architecture decouples federates from the specific HLA implementation so that federates can be effortlessly run on top of any HLA implementation that exposes services through an IEEE-complaint IDL interface. The SimJ framework eases the development of individual federates by providing a uniform and standard interface for local and distributed simulators, and makes it possible the reuse of components smaller than entire federates in both local and distributed simulators.}, keywords = {Adaptability, Common object request broker architecture (CORBA), Computer architecture, Computer software reusability, Distributed simulations, Framework, HLA, Interoperability, Middleware, Reusability, Simulators, Software technology, Standard interface, Technology}, isbn = {9781615671700}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865354509\&partnerID=40\&md5=3cad39842c91176c439ae7bf7e6b17a1}, author = {Andrea D{\textquoteright}Ambrogio and Gianni, D. and Iazeolla, G.} }