In a network-on-chip (NoC) based multicore architecture, an off-chip data access (main memory access) needs to travel through the on-chip network, spending considerable amount of time within the chip (in addition to the memory access latency). In addition, it contends with on-chip (cache) accesses as both use the same NoC resources. In this paper, focusing on multithreaded applications, we propose a compiler-based off-chip data access localization strategy, which places data elements in the memory space such that an off-chip access traverses a minimum number of links (hops) to reach the memory controller that handles this access request. We present an extensive experimental evaluation of our optimization strategy using a set of 13 multithreaded application programs under both private and shared last level caches. The results collected emphasize the importance of optimizing the off-chip data accesses.
Mon 15 Jun
|16:00 - 16:25|
Yousun KoYonsei University, Bernd BurgstallerYonsei University, Bernhard ScholzThe University of SydneyMedia Attached
|16:25 - 16:50|
Wei DingPennsylvania State University, Xulong TangPenn State, Mahmut Taylan KandemirPennsylvania State University, Yuanrui ZhangIntel, Emre KultursayPennsylvania State UniversityMedia Attached
|16:50 - 17:15|