Architectures for extreme-scale computing

Research output: Contribution to specialist publicationArticle


The innovative and new technology of extreme-scale computer leads to the orders-of-magnitude improvement in performance over current high-end machines for the same machine power consumption and physical footprint. Researchers must address architectural challenges in energy and power efficiency, concurrency and locality, resiliency, and programmability to attain extreme-scale computing. Near-threshold voltage operation is one of the most effective approaches for energy-efficient operation that reduces the supply voltage to a value only slightly higher than the transistor threshold voltage. Nonsilicon memory such as phase change memory (PCM) is another relevant technology, because it is nonvolatile, it can potentially support novel, and has inexpensive checkpointing schemes for extreme-scale architectures. Extreme-scale machines must use photonic interconnects extensively, especially to support communication between far-away nodes in larger machines.

Original languageEnglish (US)
Number of pages8
Specialist publicationComputer
StatePublished - Nov 2009

ASJC Scopus subject areas

  • Computer Science(all)


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