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Fine-Grain Dynamic Energy Tracking for System on Chip

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4 Author(s)
Mansouri, I. ; Lab. of Inf., Robot. & Microelectron. of Montpellier, Univ. of Montpellier II, Montpellier, France ; Benoit, P. ; Torres, L. ; Clermidy, F.

In this brief, we model system-on-chip consumption as a dynamic process that can be easily tracked over time through a set of power modes. The proposed method provides precise information on each block dissipation inside the system. Each generated mode defines a specific model that links power to block activity reported by a set of critical signals. The modeling approach is illustrated by real experiments. When applied to memory blocks, the model showed 10% maximum error, considering power at very fine granularity (quasi-instantaneous power). For long simulations, average and maximum energy are estimated with errors of 5.3% and 4.8%, respectively. For a memory controller and a multiply accumulate unit, only one probe is used leading to a very limited area overhead.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:60 ,  Issue: 6 )