A Case for Guarded Power Gating for Multi-Core Processors

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Provided by: IBM
Topic: Hardware
Format: PDF
Dynamic power management has become an essential part of multi-core processors and associated systems. Dedicated controllers with embedded power management firmware are now an integral part of design in such multicore server systems. Devising a robust power management policy that meets system-intended functionality across a diverse range of workloads remains a key challenge. One of the primary issues of concern in architecting a power management policy is that of performance degradation beyond a specified limit. A secondary issue is that of negative power savings. Guarding against such \"Holes\" in the management policy is crucial in order to ensure successful deployment and use in real customer environments.
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