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Thermal System Identification Analyses of Chip Interconnects to Facilitate DVFS Implementation
Keywords: DVFS, Thermo-mechanical reliability, Power fluctuations
With each advancing generation of process technology, the CPU power continues to rise, creating additional issues for thermal/mechanical packaging design. A common theme in next-generation CPU offerings will be the use of Dynamic Voltage and Frequency Scaling(DVFS) to manage the chip power during operation. With a DVFS policy, it becomes all the more important to study the potential impacts of imposed temporal variation in power on the thermo-mechanical reliability. In this study, we demonstrate a system identification approach for a practical CPU application and exemplify the trade-offs involved in creating a DVFS policy that is satisfactory to both thermal/mechanical reliability engineers and CPU design teams.
Sai Ankireddi,
Sun Microsystems Inc.
Santa Clara, CA

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