Title :
The SPEED cache coherence protocol for an optical multi-access interconnect architecture
Author :
Ha, Joon-Ho ; Pinkston, Timothy Mark
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
The paper presents a low overhead, high performance cache coherence protocol designed to exploit high bandwidth point to point and broadcast features of optics. SPEED integrates the virtues of snoopy based schemes and directory based schemes into one efficient protocol. Directory assist is used exclusively for read traffic to eliminate unnecessary broadcasts while snoopy assist is used exclusively for write and synchronization traffic to reduce directory overhead and synchronization complexities. The proposed protocol has the potential to increase performance as a result of its global independence between read and write operations, concurrency in channel access, reduced contention, and efficient broadcast of coherence and synchronization events
Keywords :
cache storage; multi-access systems; optical interconnections; parallel architectures; protocols; SPEED cache coherence protocol; channel access concurrency; directory assist; directory based schemes; global independence; high performance cache coherence protocol; optical multi access interconnect architecture; optical multi-access interconnect architecture; read traffic; reduced contention; snoopy based schemes; synchronization events; synchronization traffic; write operations; Bandwidth; Broadcasting; High speed optical techniques; Optical interconnections; Optical receivers; Optical saturation; Optical transmitters; Protocols; Space exploration; Space technology;
Conference_Titel :
Massively Parallel Processing Using Optical Interconnections, 1995., Proceedings of the Second International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-8186-7101-7
DOI :
10.1109/MPPOI.1995.528633
