Compiled communication for all-optical TDM networks

摘要

While all-optical networks offer large bandwidth for transferring data, the control mechanisms to dynamically establish all-optical paths incur large overhead. In this paper, we consider the problem of adapting all-optical multiplexed networks in multiprocessor or multicomputer environment by using compiled communication as an alternative to dynamic network control. In compiled communication, the network resources are managed statically and therefore, run time control overhead is eliminated. In addition, complex offline algorithms can be incorporated to manage the network resources more efficiently. We studied several off-line connection scheduling algorithms for optimizing the multiplexing degree required to satisfy communication requests. The performance of compiled communication for communication patterns that can be determined at compile time in application programs is evaluated and compared with dynamically controlled communication assuming a two-dimmension torus topology. Our results showthat the compiled communication out-performs the dynamic communication to a large degree for these communication patterns. Since most of the communication patterns in parallel applications can be determined at compile time, we conclude that compiled communication is an effective mechanism for all-optical network in multiprocessor environments.