Welcome to the SimGrid project!
SimGrid is a scientific instrument to study the behavior of large-scale distributed systems such as Grids, Clouds, HPC or P2P systems. It can be used to evaluate heuristics, prototype applications or even assess legacy MPI applications.
More documentation is included in this archive (doc/html/index.html) or online
In any case, you may want to subscribe to the user mailing list. There, you can find answers to your questions, or simply discuss with people doing the same kind of research than you do, in an active and friendly community.
Thanks for using our software. Please do great things with it and tell the world about it. Tell us, too, because we love to have positive feedback.
Cheers, Da SimGrid Team.