Enabling Improved Power Management in Multicore Processors Through Clustered DVFS

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Provided by: edaa
Topic: Hardware
Format: PDF
In recent years, Chip Multi-Processors (CMP) has emerged as a solution for high-speed computing demands. However, power dissipation in CMPs can be high if numerous cores are simultaneously active. Dynamic Voltage and Frequency Scaling (DVFS) is widely used to reduce the active power, but its effectiveness and cost depends on the granularity at which it is applied. Per-core DVFS allows the greatest flexibility in controlling power, but incurs the expense of an unrealistically large number of on-chip voltage regulators.
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