Processors

Forward flow: A Scalable Core for Power-Constrained CMPs

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Executive Summary

Chip MultiProcessors (CMPs) are now commodity hardware, but commoditization of parallel software remains elusive. In the near term, the current trend of increased core per-socket count will continue, despite a lack of parallel software to exercise the hardware. Future CMPs must deliver thread-level parallelism when software provides threads to run, but must also continue to deliver performance gains for single threads by exploiting instruction level parallelism and memory-level parallelism. However, power limitations will prevent conventional cores from exploiting both simultaneously. This work presents the Forwardflow Architecture, which can scale its execution logic up to run single threads, or down to run multiple threads in a CMP.

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