Efficient and Scalable Manycores

Efficient and Scalable Manycores

Optimized Synchronization and Cache Coherency

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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 bottl...