LimitLESS directories

David Chaiken, John Kubiatowicz, Anant Agarwal
1991 SIGPLAN notices  
Caches enhance the performance of multiprocessors by reducing network trac and average memory access latency. However, cache-based systems must address the problem of cache coherence. We propose the LimitLESS directory protocol to solve this problem. The LimitLESS scheme uses a combination of hardware and software techniques to realize the performance of a full-map directory with the memory overhead of a limited directory. This protocol is supported by Alewife, a large-scale multiprocessor. We
more » ... multiprocessor. We describe the architectural interfaces needed to implement the LimitLESS directory, and evaluate its performance through simulations of the Alewife machine.
doi:10.1145/106973.106995 fatcat:4pjbrbobmfd6nm2jw3oqif5r5y