Issue No. 04 - April (1987 vol. 36)
null Pen-Chung Yew , Center for Supercomputing Research and Development, University of Illinois
When a large number of processors try to access a common variable, referred to as hot-spot accesses in , not only can the resulting memory contention seriously degrade performance, but it can also cause tree saturation in the interconnection network which blocks both hot and regular requests alike. It is shown in  that even if only a small percentage of all requests are to a hot-spot, these requests can cause very serious performances problems, and networks that do the necessary combining of requests are suggested to keep the interconnection network and memory contention from becoming a bottleneck.
synchronization, Combining networks, hot-spot memory, memory bandwidth, memory contention, software combining tree
n. Pen-Chung Yew, n. Nian-Feng Tzeng and D. Lawrie, "Distributing Hot-Spot Addressing in Large-Scale Multiprocessors," in IEEE Transactions on Computers, vol. 36, no. , pp. 388-395, 1987.