He is Full professor of Computer Engineering at Sapienza University of Rome. He spent more than two years at the IBM T. J. Watson Research Center (N.Y.).
His research interests include fault tolerance, computer architecture, distributed operating system, performance and dependability evaluation of distributed and parallel computing systems.
He has published more than 120 papers in some of the most prestigious international journals and conferences, such as IEEE Trans. on Computers, IEEE Trans. on Parallel and Distributed Systems, IEEE Trans. on Software Engineering, IEEE Trans. on Knowledge and Data Engineering, IEEE Trans. on Communications, Performance Evaluation Journal. He has published several books, two of which have been published by Mc Graw Hill and by IEEE Computer Society Press.