Section: New Results

Using Marte Profile for NoCs modeling

The modeling of repetitive structures such as network on chip topologies in graphics forms poses a particular challenge. This aspect may be encountered in intensive data/control oriented applications such as H.264 video coder. In this work we have described an adequate methodology for modeling NoCs by using the MARTE standard profile. The proposed study has shown that the Repetitive Structure Modeling (RSM) package of MARTE profile is powerful enough for modeling different topologies. By using this methodology, several aspects such as routing algorithm are modeled based finite state machines. This allows to the MARTE profile to be complete enough for modeling a large number of NoCs architectures. Some work is on-going to synthesize such networks in VHDL from such models [55] . While validating the proposed methodology, a co-design approach has been studied by mapping a H264 video coding system onto a Diagonal Mesh NoC by using the Y Chart of Gaspard2 tool. Before allowing the association of the application/architecture, an architectural optimization targeting power minimization of the most critical module of the application and the router of the architecture has been performed. For instance, a flexible VLSI architecture for full-search VBSME (FSVBSME) has been proposed.