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International Journal of Reconfigurable Computing
Volume 2011, Article ID 452589, 17 pages
http://dx.doi.org/10.1155/2011/452589
Research Article

Dynamic Reconfigurable Computing: The Alternative to Homogeneous Multicores under Massive Defect Rates

Instituto de Informática, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil

Received 25 August 2010; Accepted 14 December 2010

Academic Editor: Michael Hübner

Copyright © 2011 Monica Magalhães Pereira and Luigi Carro. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The aggressive scaling of CMOS technology has increased the density and allowed the integration of multiple processors into a single chip. Although solutions based on MPSoC architectures can increase application's speed through TLP exploitation, this speedup is still limited to the amount of parallelism available in the application, as demonstrated by Amdahl's Law. Moreover, with the continuous shrinking of device features, very aggressive defect rates are expected for new technologies. Under high defect rates a large amount of processors of the MPSoC will be susceptible to defects and consequently will fail, not only reducing yield but also severely affecting the expected performance. This paper presents a run-time adaptive architecture that allows software execution even under aggressive defect rates. The proposed architecture can accelerate not only highly parallel applications but also sequential ones, and it is a heterogeneous solution to overcome the performance penalty that is imposed to homogeneous MPSoCs under massive defect rates.