In large-scale shared memory multiprocessors, when a multistage interconnection network(MIN) is used for communication between processors and memory modules, hot spot and tree saturation severely delay memory requests and degrade memory bandwidth. In this paper, we propose Cold-First scheme, which is based on priority control and virtual channel flow control concepts, to reduce the delay of cold requests in the presence of hot spot. By simulations and results, we show that Cold-First scheme reduces the delay of memory requests, especially the delay of cold requests, and improves the memory bandwidth. In addition, we study the effect caused by the long delay of hot requests on lock and unlock mechanism generally used for synchronization.
|Number of pages||6|
|Publication status||Published - 1994|
|Event||Proceedings of the 1994 International Conference on Parallel and Distributed Systems - Hsinchu, China|
Duration: 1994 Dec 19 → 1994 Dec 21
|Other||Proceedings of the 1994 International Conference on Parallel and Distributed Systems|
|Period||94/12/19 → 94/12/21|
ASJC Scopus subject areas