Processors

Compilerdirected Data Partitioning for Multicluster Processors

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Executive Summary

Multicluster architectures overcome the scaling problem of centralized resources by distributing the datapath, register file, and memory subsystem across multiple clusters connected by a communication network. Traditional compiler partitioning algorithms focus solely on distributing operations across the clusters to maximize instruction-level parallelism. The distribution of data objects is generally ignored. In this paper, the authors examine explicit partitioning of data objects and its affects on operation partitioning. The partitioning of data objects must consider several factors: object size, access frequency/pattern, and dependence patterns between operations that manipulate the objects.

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