Shared Memory Consistency Models Evaluation in NoC based Multicore Systems

This paper overviews our study on various shared memory consistency models, Sequential Consistency (SC), Weak Consistency (WC), Release Consistency (RC), and Protected Release Consistency (PRC) models in Network-on-Chip (NoC) based Distributed Shared Memory (DSM) multi-core systems. These memory models are implemented by using a transaction counter (TC) based unified approach in the NoC based systems. The performance gain observed in the WC, RC and PRC relaxed memory models under various benchmarks is between 20% and 50% compared to the SC strict model.Q