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Автор: Jose Luis Abellan,Juan Fernandez and Manuel Eugenio Acacio
Год: 2013
Издание:
LAP Lambert Academic Publishing
Страниц: 232
ISBN: 9783659371738
Continuous advances in silicon technology have enabled a new generation of chip multiprocessors, called manycores. Current designs of these systems comprise many simple and energy-efficient processor cores for an unprecedented computational power and energy efficiency. Nonetheless, this book identifies three fundamental performance bottlenecks that prevent future manycores from scaling to larger core counts. In particular, highly contended synchronization in barriers and locks, along with the overhead due to coherency activity of hardware coherence protocols. To overcome such performance bottlenecks, three distinct and complementary simple and power-efficient hardware-based solutions have been proposed: GBarrier, GLock and ECONO, respectively. A comprehensive evaluation of these new architectures utilizing a current industrial tool flow, full-custom state-of-the-art technology, full-system simulation, and a representative set of current benchmarks, reveals that integrating these...
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