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Control for high-speed PE arrays
Conference proceeding

Control for high-speed PE arrays

Martin Herbordt, Jade Cravy, Honghai Zhang, Calvin Lin and Hong Rao
2000 IEEE International Conference on Application-Specific Systems, Architectures, and Processors; Boston, MA; USA; 10 July-12 July 2000, pp.247-257
07/10/2000
DOI: 10.1109/ASAP.2000.862395

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Abstract

Although arrays of SIMD PEs can be built with very high operating frequencies, problems exist in keeping the array busy. The inherent mismatch between host and array makes it difficult to maintain high array utilization: either the rate of instruction issue is very low or PE data locality is compromised, having the same effect. Our solution is based on an array control unit (ACU) design that expands macro instructions in two stages, first by data tile and then into microinstructions. The expansion itself solves the issue problem; decoupling the expansion modalities maintains data locality. Several issues involving host/ACU interaction need to be resolved to effect this solution.

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