A lossless compression system realization utilizing phit-serial network-on-chip paradigm

The routing efficiency of on-chip networks remains an open problem for system engineers dealing with multi-core processors. The presented research includes consideration of phit-serial links in a Network-on-Chip (NoC) architecture. We propose measures for communication overhead for a single wormhole router embedded in a square mesh plane. As a source of data bit-stream, we use a lossless compression system based on blending predictors. According to the experimental results, the influence of flow control unit (flit) and physical control digit (phit) lengths on total transfer time is of a non-linear character. The transfer time is proportional to the flit length and inverse proportional to the phit size.