Nt1310 Unit 1 Process Tuning Strategy

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Process tuning strategy is to minimize the average power consumption of multi-core processors that use the DVFS and CG techniques, while providing the same maximum performance. By scaling the supply voltage (VDD), maximum operating frequency is increased to enhance the performance of a multi core processor. However, increasing VDD is limited by the power and thermal constraints. These constraints can be determined by capacity of supply voltage regulators and cooling solutions in the computing platforms customized for each computing segment. The tuning strategy process parameters are designed such that they do not effect 1) the maximum throughput of multi-core processors and 2) the overall execution time of workloads. There have been experiments …show more content…

These will allow active cores to run at high VDD and Fmax. In such cases VDDmax will limit Fmax. The leakage power (Pleak) is also significant in multi core processors. The process parameters are tuned to reduce leakage power at the expense of reducing Fmax at the same VDD. However, multi core processors with high performance and low power adopting DVFS and CG often run at medium to low frequency and clock gated low power states for a good fraction of execution time. Thus, minimizing Pleak can reduce the average power consumption of multi core processors without impacting the …show more content…

On average, the processor spends 56%, 73%, 83% and 71% of the run time in P1-C1-P3-C1 states for SYSmark 3D Modeling, E-Learning, Office Productivity and Video Creation and on an average, it spends 73%, 81%, 90% and 84% of run time in P1-P3 states respectively. As we discussed in the earlier section that the process technology T1 that exhibits lower Pleak at lower VDD and Fmax ranges will lead lower total power consumption in exchange for higher Pleak at Fmax > FmaxTDP that can rarely happen for processors running multiple applications

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