Using Multicast and Multithreading to Reduce Communication in Software DSM Systems

This paper examines the performance benefits of employing multicast communication and application-level multithreading in the Brazos software distributed shared memory (DSM) system. Application-level multithreading in Brazos allows programs to transparently take advantage of available local multiprocessing. Brazos uses multicast communication to reduce the number of consistency-related messages, and employs two adaptive mechanisms that reduce the detrimental side effects of using multicast communication. We compare three software DSM systems running on identical hardware: (1) a single-threaded point-to-point system, (2) a multithreaded point-to-point system, and (3) Brazos, which incorporates both multithreading and multicast communication. For the six applications studied, multicast and multithreading improve speedup on eight processors by an average of 38%.

• Type: Conference
• Year: 1998
• Where: HPCA
• Authors: Evan Speight, John K. Bennett
• Keywords: Application-level Multithreading, Brazos, Distributed And Parallel Computing, HPCA 1998, Multicast Communication