Abstract
Advances in interconnection network performance and interprocessor interaction mechanisms enable the construction of fine-grain parallel computers in which the nodes are physically small and have a small amount of memory. This class of machines has a much higher ratio of processor to memory area and hence provides greater processor throughput and memory bandwidth per unit cost relative to conventional memory-dominated machines. This paper describes the technology and architecture trends motivating fine-grain architecture and the enabling technologies of high-performance interconnection networks and low-overhead interaction mechanisms. We conclude with a discussion of our experiences with the J-Machine, a prototype fine-grain concurrent computer.
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