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Wire delay is emerging as the natural limiter to microprocessor scalability. A new architectural approach could solve this problem, as well as deliver unprecedented performance, energy efficiency and cost effectiveness. The Raw microprocessor research prototype uses a scalable instruction set architecture to attack the emerging wire-delay problem by providing a parallel, software interface to the gate, wire and pin resources of the chip. An architecture that has direct, first-class analogs to all of these physical resources will ultimately let programmers achieve the maximum amount of performance and energy efficiency in the face of wire delay.
Taylor et al. (Fri,) studied this question.